JP6369848B2 - Metal nanoparticle-supporting carbon material and method for producing the same, and method for producing functionalized exfoliated carbon material - Google Patents
Metal nanoparticle-supporting carbon material and method for producing the same, and method for producing functionalized exfoliated carbon material Download PDFInfo
- Publication number
- JP6369848B2 JP6369848B2 JP2013231393A JP2013231393A JP6369848B2 JP 6369848 B2 JP6369848 B2 JP 6369848B2 JP 2013231393 A JP2013231393 A JP 2013231393A JP 2013231393 A JP2013231393 A JP 2013231393A JP 6369848 B2 JP6369848 B2 JP 6369848B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- carbon material
- metal nanoparticle
- acetylene black
- carrying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003575 carbonaceous material Substances 0.000 title claims description 48
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 229910052751 metal Inorganic materials 0.000 title description 13
- 239000002184 metal Substances 0.000 title description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 58
- 239000006230 acetylene black Substances 0.000 claims description 44
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 39
- 239000002253 acid Substances 0.000 claims description 37
- 239000002082 metal nanoparticle Substances 0.000 claims description 35
- 229910052697 platinum Inorganic materials 0.000 claims description 20
- 229910021645 metal ion Inorganic materials 0.000 claims description 17
- -1 platinum ion Chemical class 0.000 claims description 15
- 238000009210 therapy by ultrasound Methods 0.000 claims description 14
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 10
- 229910017604 nitric acid Inorganic materials 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- 241000872198 Serjania polyphylla Species 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims description 4
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 239000010948 rhodium Substances 0.000 claims description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- MUJIDPITZJWBSW-UHFFFAOYSA-N palladium(2+) Chemical compound [Pd+2] MUJIDPITZJWBSW-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 20
- 238000006722 reduction reaction Methods 0.000 description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 16
- 239000002105 nanoparticle Substances 0.000 description 16
- 229910052760 oxygen Inorganic materials 0.000 description 16
- 239000001301 oxygen Substances 0.000 description 16
- 229910021389 graphene Inorganic materials 0.000 description 12
- 239000002904 solvent Substances 0.000 description 11
- 238000002484 cyclic voltammetry Methods 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 3
- 239000005456 alcohol based solvent Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000000468 ketone group Chemical group 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 125000003172 aldehyde group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Carbon And Carbon Compounds (AREA)
- Catalysts (AREA)
- Inert Electrodes (AREA)
- Hybrid Cells (AREA)
Description
本発明は、金属ナノ粒子担持炭素材料およびその製造方法、並びに、官能化剥離炭素材料の製造方法に関する。 The present invention relates to a metal nanoparticle-supporting carbon material, a method for producing the same, and a method for producing a functionalized exfoliated carbon material.
燃料電池やリチウム−空気電池は、従来の内燃機関と異なり、二酸化炭素等の環境負荷ガスを発生しないために、次世代のクリーンエネルギーシステムとして注目されている。
これら電池に使用される電極として、白金などに代表される金属が担持された、カーボンなどの炭素材料が使用されている（特許文献１）。
Unlike conventional internal combustion engines, fuel cells and lithium-air cells are attracting attention as next-generation clean energy systems because they do not generate environmentally harmful gases such as carbon dioxide.
As an electrode used in these batteries, a carbon material such as carbon carrying a metal typified by platinum or the like is used (Patent Document 1).
一方、近年、電池に求められる性能の高まりに応じて、電池に使用される電極の酸素還元反応（ＯＲＲ：oxygen reduction reaction）特性のより一層の向上が求められている。 On the other hand, in recent years, further improvement in the oxygen reduction reaction (ORR) characteristics of electrodes used in batteries has been demanded in accordance with the increase in performance required for batteries.
本発明は、上記実情に鑑みて、酸素還元反応特性がより優れた電池用電極の形成に用いられる金属ナノ粒子担持炭素材料を簡便に製造することができる、金属ナノ粒子担持炭素材料の製造方法、および、該方法により製造される金属ナノ粒子担持炭素材料を提供することを目的とする。
また、本発明は、該金属ナノ粒子担持炭素材料の製造に使用される官能化剥離炭素材料の製造方法を提供することも目的とする。
In view of the above circumstances, the present invention provides a method for producing a metal nanoparticle-supported carbon material, which can easily produce a metal nanoparticle-supported carbon material used for forming a battery electrode having more excellent oxygen reduction reaction characteristics. And it aims at providing the metal nanoparticle carrying | support carbon material manufactured by this method.
Another object of the present invention is to provide a method for producing a functionalized exfoliated carbon material used for producing the metal nanoparticle-supporting carbon material.
本発明者らは、従来技術の問題点について鋭意検討した結果、アセチレンブラックを出発原料とした方法により所望の特性を示す金属ナノ粒子担持炭素材料が得られることを見出し、本発明を完成するに至った。
すなわち、以下の構成により上記目的を達成することができることを見出した。
As a result of intensive studies on the problems of the prior art, the present inventors have found that a metal nanoparticle-supported carbon material exhibiting desired characteristics can be obtained by a method using acetylene black as a starting material, and to complete the present invention. It came.
That is, it has been found that the above object can be achieved by the following configuration.
（１） 酸の存在下、アセチレンブラックに超音波を照射する工程と、
超音波処理が施されたアセチレンブラック、および、金属イオンを混合して、還元処理を施し、金属ナノ粒子が担持された炭素材料を製造する工程とを備える、金属ナノ粒子担持炭素材料の製造方法。
（２） 前記酸が、硝酸、硝酸、塩酸、臭酸、フッ酸、トリフルオロメタンスルホン酸、トリフルオロメタン酢酸、過塩素酸、クロム酸塩、二クロム酸塩、および過マンガン酸塩からなる群から選択される少なくとも１種を含む、（１）に記載の金属ナノ粒子担持炭素材料の製造方法。
（３） 前記金属イオンが、白金イオン、パラジウムイオン、ロジウムイオン、イリジウムイオン、ルテニウムイオン、および、金イオンからなる群から選択される少なくとも１種を含む、（１）または（２）に記載の金属ナノ粒子担持炭素材料の製造方法。
（４） 前記金属ナノ粒子の平均粒径が、１〜１００ｎｍである、（１）〜（３）のいずれかに記載の金属ナノ粒子担持炭素材料の製造方法。
（５） （１）〜（４）のいずれかに記載の製造方法より製造される金属ナノ粒子担持炭素材料を含む電池用電極。
（６） （５）に記載の電池用電極を含む燃料電池。
（７） （５）に記載の電池用電極を含むリチウム空気電池。
（８） （５）に記載の電池用電極を含むマグネシウム空気電池。
（９） （５）に記載の電池用電極を含む亜鉛空気電池。
（１０） 酸の存在下、アセチレンブラックに超音波を照射する工程を有する、官能化剥離炭素材料の製造方法。
（１１） 前記酸が、硝酸、硝酸、塩酸、臭酸、フッ酸、トリフルオロメタンスルホン酸、トリフルオロメタン酢酸過塩素酸、クロム酸塩、二クロム酸塩、および過マンガン酸塩からなる群から選択される少なくとも１種を含む、（１０）に記載の官能化剥離炭素材料の製造方法。
（１２） 酸の存在下、アセチレンブラックに超音波を照射する工程と、
超音波処理が施されたアセチレンブラックおよび金属イオンを混合して、還元処理を施す工程とを備える製造方法により製造される金属ナノ粒子担持炭素材料。
(1) irradiating acetylene black with ultrasonic waves in the presence of an acid;
A process for producing a carbon material carrying a metal nanoparticle, comprising: acetylene black subjected to ultrasonic treatment; and a step of producing a carbon material carrying a metal nanoparticle by performing reduction treatment by mixing metal ions .
(2) The acid is selected from the group consisting of nitric acid, nitric acid, hydrochloric acid, odorous acid, hydrofluoric acid, trifluoromethanesulfonic acid, trifluoromethaneacetic acid, perchloric acid, chromate, dichromate, and permanganate. The manufacturing method of the metal nanoparticle carrying | support carbon material as described in (1) containing at least 1 sort (s) selected.
(3) The metal ion includes at least one selected from the group consisting of platinum ion, palladium ion, rhodium ion, iridium ion, ruthenium ion, and gold ion, according to (1) or (2) A method for producing a metal nanoparticle-supporting carbon material.
(4) The manufacturing method of the metal nanoparticle carrying | support carbon material in any one of (1)-(3) whose average particle diameter of the said metal nanoparticle is 1-100 nm.
(5) A battery electrode comprising a metal nanoparticle-supported carbon material produced by the production method according to any one of (1) to (4).
(6) A fuel cell comprising the battery electrode according to (5).
(7) A lithium air battery including the battery electrode according to (5).
(8) A magnesium-air battery including the battery electrode according to (5).
(9) A zinc-air battery including the battery electrode according to (5).
(10) A method for producing a functionalized release carbon material, comprising a step of irradiating acetylene black with ultrasonic waves in the presence of an acid.
(11) The acid is selected from the group consisting of nitric acid, nitric acid, hydrochloric acid, odorous acid, hydrofluoric acid, trifluoromethanesulfonic acid, trifluoromethaneacetic acid perchloric acid, chromate, dichromate, and permanganate. The method for producing a functionalized exfoliated carbon material according to (10), comprising at least one selected from the group consisting of:
(12) irradiating acetylene black with ultrasonic waves in the presence of an acid;
A metal nanoparticle-supporting carbon material produced by a production method comprising a step of mixing acetylene black and metal ions subjected to ultrasonic treatment and subjecting to reduction treatment.
本発明によれば、酸素還元反応特性がより優れた電池用電極の形成に用いられる金属ナノ粒子担持炭素材料を簡便に製造することができる、金属ナノ粒子担持炭素材料の製造方法、および、該方法により製造される金属ナノ粒子担持炭素材料を提供することができる。
また、本発明によれば、該金属ナノ粒子担持炭素材料の製造に使用される官能化剥離炭素材料の製造方法を提供することもできる。
According to the present invention, a method for producing a metal nanoparticle-carrying carbon material, which can easily produce a metal nanoparticle-carrying carbon material used for forming a battery electrode having more excellent oxygen reduction reaction characteristics, and The metal nanoparticle carrying | support carbon material manufactured by the method can be provided.
Moreover, according to this invention, the manufacturing method of the functionalized peeling carbon material used for manufacture of this metal nanoparticle carrying | support carbon material can also be provided.
以下に、本発明の金属ナノ粒子担持炭素材料およびその製造方法、並びに、官能化剥離炭素材料の製造方法の好適態様について詳述する。
まず、本発明の特徴点の一つとしては、酸存在下にて、アセチレンブラックに超音波処理を施す工程と、超音波処理が施されたアセチレンブラックに金属ナノ粒子を担持する工程とを備える。酸の存在下、出発原料であるアセチレンブラックに超音波処理を施すことにより、アセチレンブラックを構成するグラフェンシートに酸素含有基などの官能基が導入されると共に、グラフェンシートが剥離（exfoliated）され、その剥離したグラフェンシート間に金属ナノ粒子が担持されると推測される。このような構成をとることにより、粒径の小さい金属ナノ粒子の安定性が向上し、結果としてＯＲＲ活性に優れた電池用電極が形成されると考えられる。
Below, the metal nanoparticle carrying | support carbon material of this invention, its manufacturing method, and the suitable aspect of the manufacturing method of a functionalized peeling carbon material are explained in full detail.
First, as one of the features of the present invention, the method includes a step of subjecting acetylene black to ultrasonic treatment in the presence of an acid, and a step of supporting metal nanoparticles on acetylene black that has been subjected to ultrasonic treatment. . By subjecting the acetylene black as a starting material to ultrasonic treatment in the presence of an acid, a functional group such as an oxygen-containing group is introduced into the graphene sheet constituting the acetylene black, and the graphene sheet is exfoliated. It is presumed that metal nanoparticles are supported between the separated graphene sheets. By adopting such a configuration, it is considered that the stability of metal nanoparticles having a small particle size is improved, and as a result, a battery electrode having excellent ORR activity is formed.
本発明の金属ナノ粒子担持炭素材料の製造方法は、以下の２つの工程を少なくとも含む。
（工程１）酸の存在下、アセチレンブラックに超音波を照射する工程
（工程２）超音波処理が施されたアセチレンブラック、および、金属イオンを混合して、還元処理を施し、金属ナノ粒子が担持された炭素材料を製造する工程
以下、工程毎に使用される材料や、工程の手順について詳述する。
The method for producing a metal nanoparticle-supporting carbon material of the present invention includes at least the following two steps.
(Step 1) A step of irradiating acetylene black with ultrasonic waves in the presence of an acid (Step 2) Acetylene black subjected to ultrasonic treatment and metal ions are mixed and subjected to a reduction treatment, whereby metal nanoparticles are formed. Process for producing supported carbon material Hereinafter, materials used for each process and process procedures will be described in detail.
＜工程１（超音波照射工程）＞
本工程は、酸の存在下、アセチレンブラックに超音波を照射する工程である。本工程を実施することにより、アセチレンブラックを構成するグラフェンシートが酸化されて酸素含有基（例えば、カルボキシル基、アルデヒド基、アルコール基、ケトン基など）などが導入されて官能基化されると共に、グラフェンシートの一部が剥離（exfoliated）される。
まず、本工程で使用される材料（酸、アセチレンブラックなど）について詳述し、その後本工程の手順について詳述する。
<Process 1 (Ultrasonic irradiation process)>
This step is a step of irradiating acetylene black with ultrasonic waves in the presence of an acid. By carrying out this step, the graphene sheet constituting acetylene black is oxidized and oxygen-containing groups (for example, carboxyl group, aldehyde group, alcohol group, ketone group, etc.) are introduced and functionalized, Part of the graphene sheet is exfoliated.
First, the materials (acid, acetylene black, etc.) used in this step will be described in detail, and then the procedure of this step will be described in detail.
（アセチレンブラック）
本工程では、アセチレンを熱分解してつくるカーボンブラックである、アセチレンブラックが使用される。
アセチレンブラックの平均一次粒径は特に制限されないが、製造される電池用電極のＯＲＲ特性がより優れる点（以後、単に「本発明の効果がより優れる点」とも称する）で、１０〜１００ｎｍが好ましく、１０〜４０ｎｍがより好ましい。
また、アセチレンブラックの比表面積は特に制限されないが、本発明の効果がより優れる点で、１０〜２００ｍ2／ｇが好ましい。
また、アセチレンブラックの密度は特に制限されないが、本発明の効果がより優れる点で、０．０１〜０．１ｇ/ｍｌが好ましい。
(Acetylene black)
In this step, acetylene black, which is carbon black produced by thermally decomposing acetylene, is used.
The average primary particle size of acetylene black is not particularly limited, but is preferably 10 to 100 nm in that the ORR characteristics of the produced battery electrode are more excellent (hereinafter also referred to simply as “the effect of the present invention is more excellent”). 10 to 40 nm is more preferable.
Further, the specific surface area of acetylene black is not particularly limited, but is preferably 10 to 200 m 2 / g in terms of more excellent effects of the present invention.
The density of acetylene black is not particularly limited, but is preferably 0.01 to 0.1 g / ml from the viewpoint that the effect of the present invention is more excellent.
（酸）
本工程で使用される酸の種類は特に制限されないが、本発明の効果がより優れる点で、いわゆる強酸であることが好ましい。なお、強酸とは、ｐＫａが２以下である酸を意図する。
酸の好適な態様としては、本発明の効果がより優れる点で、硫酸、硝酸、塩酸、過塩素酸、臭酸、トリフルオロメタンスルホン酸、トリフルオロメタン酢酸、クロム酸塩、二クロム酸塩、および過マンガン酸塩からなる群から選択される少なくとも１種を含むことが好ましく、硫酸と硝酸との混合物（特に、王水）がより好ましい。
なお、酸としては、１種のみを用いてもよいし、２種以上を合わせて使用してもよい。
(acid)
Although the kind of acid used at this process is not restrict | limited in particular, It is preferable that it is what is called a strong acid at the point which the effect of this invention is more excellent. In addition, a strong acid intends the acid whose pKa is 2 or less.
As a preferred embodiment of the acid, sulfuric acid, nitric acid, hydrochloric acid, perchloric acid, odoric acid, trifluoromethanesulfonic acid, trifluoromethaneacetic acid, chromate, dichromate, and It is preferable to include at least one selected from the group consisting of permanganates, and a mixture of sulfuric acid and nitric acid (particularly aqua regia) is more preferable.
In addition, as an acid, only 1 type may be used and 2 or more types may be used together.
（工程手順）
本工程としては、上記酸の存在下、アセチレンブラックに超音波を照射する。
酸とアセチレンブラックとの質量比（アセチレンブラックの質量／酸の質量）は特に制限されないが、本発明の効果がより優れる点で、１×１０−６〜１×１０−１が好ましく、１×１０−５〜１×１０−２がより好ましい。
(Process procedure)
In this step, acetylene black is irradiated with ultrasonic waves in the presence of the acid.
The mass ratio between the acid and acetylene black (the mass of acetylene black / the mass of acid) is not particularly limited, but is preferably 1 × 10 −6 to 1 × 10 −1 in terms of more excellent effects of the present invention. 10 −5 to 1 × 10 −2 is more preferable.
超音波照射の条件は特に制限されないが、本発明の効果がより優れる点で、周波数は２〜５ＭＨｚが好ましく（より好ましくは、３〜４．５ＭＨｚ）、温度は１５〜１９８℃が好ましく（より好ましくは、５０〜１００℃）、照射時間は１〜２４時間が好ましい（より好ましくは、３〜１０時間）。
なお、超音波照射を行う装置として、例えば、超音波発振機、超音波ホモジナイザー、卓上型超音波洗浄機等の従来公知の超音波装置が挙げられる。
Although the conditions for ultrasonic irradiation are not particularly limited, the frequency is preferably 2 to 5 MHz (more preferably, 3 to 4.5 MHz) and the temperature is preferably 15 to 198 ° C. (more preferably) because the effects of the present invention are more excellent. Preferably, the irradiation time is preferably 1 to 24 hours (more preferably 3 to 10 hours).
In addition, as an apparatus which performs ultrasonic irradiation, conventionally well-known ultrasonic apparatuses, such as an ultrasonic oscillator, an ultrasonic homogenizer, a table-type ultrasonic cleaner, are mentioned, for example.
上記工程１の後、必要に応じて、超音波処理が施されたアセチレンブラックを洗浄する工程（洗浄工程）を設けてもよい。
洗浄工程で使用される洗浄液の種類は特に制限されず、水や、有機溶媒（例えば、アルコール系溶媒）などが挙げられる。
After the
The type of the cleaning liquid used in the cleaning process is not particularly limited, and examples thereof include water and organic solvents (for example, alcohol solvents).
上記工程１を経ることにより、アセチレンブラック中のグラフェンシートを酸化して、ケトン基やアルコール基などの酸素含有基（官能基）が導入された、官能化剥離炭素材料（官能基が導入され、一部のグラフェンシートが剥離した炭素材料）が得られる。言い換えると、グラフェンオキシドが得られる。
なお、従来技術においては、グラフェンからグラフェンオキシドを得るために複数の工程（少なくとも２工程）を経る必要があったが、上記工程であればワンポット（one pot）でアセチレンブラックからグラフェンオキシドを得ることができ、工程の簡略化が可能となる。つまり、上記工程は、官能化剥離炭素材料（グラフェンオキシド）を得る好適な方法ともいえる。
By passing through the
In the prior art, in order to obtain graphene oxide from graphene, it was necessary to go through a plurality of steps (at least two steps), but in the case of the above step, graphene oxide can be obtained from acetylene black in one pot. And the process can be simplified. That is, the above process can be said to be a suitable method for obtaining a functionalized exfoliated carbon material (graphene oxide).
＜工程２（金属ナノ粒子製造工程）＞
本工程は、超音波処理が施されたアセチレンブラックおよび金属イオンを混合して、還元処理を施し、金属ナノ粒子が担持された炭素材料を製造する工程である。超音波処理が施されたアセチレンブラックには酸素含有基が導入されており、該基を介して金属イオンとの相互作用が形成される。金属イオンはその後の還元処理により、金属ナノ粒子となる。
まず、本工程で使用される材料（酸、アセチレンブラックなど）について詳述し、その後本工程の手順について詳述する。
<Process 2 (metal nanoparticle manufacturing process)>
In this step, acetylene black and metal ions that have been subjected to ultrasonic treatment are mixed and subjected to reduction treatment to produce a carbon material carrying metal nanoparticles. An oxygen-containing group is introduced into the acetylene black subjected to ultrasonic treatment, and an interaction with a metal ion is formed through the group. The metal ions become metal nanoparticles by the subsequent reduction treatment.
First, the materials (acid, acetylene black, etc.) used in this step will be described in detail, and then the procedure of this step will be described in detail.
（金属イオン）
金属イオンの種類は特に制限されず、公知の金属イオンが用いられる。
なかでも、本発明の効果がより優れる点で、白金イオン、パラジウムイオン、ロジウムイオン、イリジウムイオン、ルテニウムイオン、および、金イオンからなる群から選択される少なくとも１種を含むことが好ましく、白金イオンがより好ましい。
上記金属イオンの供給源としては、上記金属イオンを含む化合物（例えば、塩化物、炭酸塩、酸化物、硝酸塩、硫酸塩、リン酸塩、フッ化物、フルオロ酸（塩）、有機錯化合物など）が挙げられる。
(Metal ions)
The kind in particular of metal ion is not restrict | limited, A well-known metal ion is used.
Among these, it is preferable that at least one selected from the group consisting of platinum ions, palladium ions, rhodium ions, iridium ions, ruthenium ions, and gold ions is contained in terms of more excellent effects of the present invention. Is more preferable.
As a source of the metal ion, a compound containing the metal ion (for example, chloride, carbonate, oxide, nitrate, sulfate, phosphate, fluoride, fluoro acid (salt), organic complex compound, etc.) Is mentioned.
（工程の手順）
上述した超音波処理が施されたアセチレンブラックと金属イオンとの混合方法は特に制限されず、通常、溶媒の存在下、超音波処理が施されたアセチレンブラックと、上記金属イオンを含む化合物とを混合する方法が挙げられる。
上記方法で使用される溶媒の種類は特に制限されず、例えば、水や、有機溶媒（例えば、アルコール系溶媒、ケトン系溶媒、炭化水素系溶媒、アミド系溶媒、ニトリル系溶媒、エステル系溶媒、カーボネート系溶媒、エーテル系溶媒、ハロゲン系溶媒など）が挙げられる。
混合条件は特に制限されないが、本発明の効果がより優れる点で、混合温度は１２０〜１９８℃が好ましく（より好ましくは、１５０〜１９８℃）、混合時間は１２〜４８時間が好ましい（より好ましくは、２０〜３０時間）。
(Process procedure)
The mixing method of acetylene black subjected to the above-described ultrasonic treatment and metal ions is not particularly limited, and usually, acetylene black subjected to ultrasonic treatment in the presence of a solvent and a compound containing the above metal ions. The method of mixing is mentioned.
The type of the solvent used in the above method is not particularly limited, and examples thereof include water and organic solvents (for example, alcohol solvents, ketone solvents, hydrocarbon solvents, amide solvents, nitrile solvents, ester solvents, Carbonate solvent, ether solvent, halogen solvent, etc.).
The mixing conditions are not particularly limited, but the mixing temperature is preferably 120 to 198 ° C. (more preferably 150 to 198 ° C.) and the mixing time is preferably 12 to 48 hours (more preferably) in that the effect of the present invention is more excellent. Is 20 to 30 hours).
次に、上記で得られた混合物に対して、還元処理が施される。還元処理により金属イオンが還元され、金属ナノ粒子が生成される。
還元処理の方法は特に制限されず、公知の方法を採用できる。例えば、公知の還元剤（例えば、水素化ホウ素ナトリウム、アルコール系溶媒（例えば、エチレングリコールなど））を添加して、必要に応じて加熱する方法や、還元性気体（例えば、水素）中で還元する方法や、超音波処理を施す方法などが挙げられる。
Next, a reduction process is performed on the mixture obtained above. Metal ions are reduced by the reduction treatment, and metal nanoparticles are generated.
The method for the reduction treatment is not particularly limited, and a known method can be adopted. For example, a known reducing agent (for example, sodium borohydride, alcohol solvent (for example, ethylene glycol)) is added and heated as necessary, or reduced in a reducing gas (for example, hydrogen). And a method of performing ultrasonic treatment.
上記工程２の後、必要に応じて、金属ナノ粒子が担持された炭素材料を洗浄する工程（洗浄工程）を設けてもよい。
洗浄工程で使用される洗浄液の種類は特に制限されず、水や、有機溶媒（例えば、アルコール系溶媒）などが挙げられる。
After the step 2, a step (cleaning step) of cleaning the carbon material on which the metal nanoparticles are supported may be provided as necessary.
The type of the cleaning liquid used in the cleaning process is not particularly limited, and examples thereof include water and organic solvents (for example, alcohol solvents).
＜金属ナノ粒子が担持された炭素材料（金属ナノ粒子担持炭素材料）＞
上記処理により、金属ナノ粒子が担持された炭素材料が製造される。より具体的には、上記処理により、超音波処理が施されたアセチレンブラックに金属ナノ粒子が担持された炭素材料が得られる。
金属ナノ粒子が担持された炭素材料中における金属ナノ粒子の含有量は特に制限されないが、本発明の効果がより優れる点で、炭素材料（アセチレンブラック）１００質量部に対して、１〜５０質量部が好ましく、１０〜５０質量部がより好ましく、１５〜２５質量部がさらに好ましい。
金属ナノ粒子の平均粒径は特に制限されないが、本発明の効果がより優れる点で、１〜１００ｎｍが好ましく、１〜２０ｎｍがより好ましく、１〜１０ｎｍがさらに好ましい。
<Carbon material carrying metal nanoparticles (carbon material carrying metal nanoparticles)>
By the above process, a carbon material carrying metal nanoparticles is produced. More specifically, a carbon material in which metal nanoparticles are supported on acetylene black that has been subjected to ultrasonic treatment is obtained by the above treatment.
The content of the metal nanoparticles in the carbon material carrying the metal nanoparticles is not particularly limited, but 1 to 50 masses with respect to 100 mass parts of the carbon material (acetylene black) in that the effect of the present invention is more excellent. Part is preferable, 10 to 50 parts by mass is more preferable, and 15 to 25 parts by mass is further preferable.
The average particle size of the metal nanoparticles is not particularly limited, but 1 to 100 nm is preferable, 1 to 20 nm is more preferable, and 1 to 10 nm is more preferable in that the effect of the present invention is more excellent.
上記金属ナノ粒子が担持された炭素材料を用いて形成される電池用電極は優れたＯＲＲ特性を示す。
電池用電極の製造方法は特に制限されず、公知の方法を採用することができ、例えば、上記金属ナノ粒子が担持された炭素材料および溶媒を含む電極形成用組成物を、導電性基板上に塗布して、電極を形成する方法が挙げられる。
上記金属ナノ粒子が担持された炭素材料を用いて形成される電池用電極は、燃料電池、リチウム空気電池、マグネシウム空気電池、亜鉛空気電池、各種有機合成用触媒に好適に用いることができる。
A battery electrode formed using a carbon material carrying the metal nanoparticles exhibits excellent ORR characteristics.
The method for producing the battery electrode is not particularly limited, and a known method can be adopted. For example, an electrode-forming composition containing a carbon material on which the metal nanoparticles are supported and a solvent is formed on a conductive substrate. The method of apply | coating and forming an electrode is mentioned.
The battery electrode formed using the carbon material on which the metal nanoparticles are supported can be suitably used for a fuel cell, a lithium air cell, a magnesium air cell, a zinc air cell, and various organic synthesis catalysts.
以下、実施例により、本発明について更に詳細に説明するが、本発明はこれらに限定されるものではない。 EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these.
＜実施例１＞
丸底フラスコに、アセチレンブラック（１ｍｇ）と、硫酸および硝酸の混合液（１０ｍｌ、硫酸：硝酸（質量比）＝３：１）とを加えて、アセチレンブラックを溶液中に浸漬させた。得られた溶液に対して、室温にて３時間超音波（周波数３．８ＭＨｚ）を照射した。その後、溶液を蒸留水（１００ｍｌ）に注ぎ、その後、ナイロンフィルター膜（孔径０．１μｍ）を用いて濾過し、固形分を回収した。得られた固形分を蒸留水で洗浄し、その後、さらにメタノールで洗浄し、数分乾燥させた。その後、さらに真空オーブン中にて１００℃でさらに乾燥して、官能基化されたアセチレンブラック（以後、ＦＡＢとも称する）を回収した。
<Example 1>
Acetylene black (1 mg) and a mixed solution of sulfuric acid and nitric acid (10 ml, sulfuric acid: nitric acid (mass ratio) = 3: 1) were added to the round bottom flask, and the acetylene black was immersed in the solution. The obtained solution was irradiated with ultrasonic waves (frequency 3.8 MHz) at room temperature for 3 hours. Thereafter, the solution was poured into distilled water (100 ml), and then filtered using a nylon filter membrane (pore diameter 0.1 μm) to recover the solid content. The obtained solid content was washed with distilled water, then further washed with methanol and dried for several minutes. Thereafter, it was further dried at 100 ° C. in a vacuum oven to recover functionalized acetylene black (hereinafter also referred to as FAB).
次に、以下に示す、化学還元法により、得られたＦＡＢの表面に白金ナノ粒子を形成した。具体的には、まず、ヘキサクロロ白金（ＩＶ）酸（Ｈ2ＰｔＣｌ6）を０．０４４３Ｍで含む水溶液（１．１６ｍｌ）、脱イオン水（８．８４ｍｌ）、および、エチレングリコール（４０ｍｌ）を含む丸形フラスコに、ＦＡＢ（９０ｍｇ）を加えた。得られた溶液に対して、４時間超音波照射を行った。その後、得られた溶液を１２０℃で２４時間加熱した。次に、ナイロンフィルター膜を用いて、得られた溶液を濾過し、得られた固形分を水およびメタノールで洗浄した。その後、固形分を１００℃で２時間乾燥して、白金ナノ粒子が担持されたＦＡＢを得た。なお、アセチレンブラックの質量に対する白金ナノ粒子の担持量は、８質量％であった（つまり、（白金ナノ粒子の質量／アセチレンブラックの質量）×１００＝８質量％であった）。また、ＴＥＭ観察より、白金ナノ粒子の平均粒径は２．５ｎｍであった。 Next, platinum nanoparticles were formed on the surface of the obtained FAB by the chemical reduction method shown below. Specifically, first, an aqueous solution (1.16 ml) containing hexachloroplatinic (IV) acid (H 2 PtCl 6 ) at 0.0443 M, deionized water (8.84 ml), and ethylene glycol (40 ml) are contained. To the round flask, FAB (90 mg) was added. The obtained solution was subjected to ultrasonic irradiation for 4 hours. The resulting solution was then heated at 120 ° C. for 24 hours. Next, the obtained solution was filtered using a nylon filter membrane, and the obtained solid content was washed with water and methanol. Then, solid content was dried at 100 degreeC for 2 hours, and FAB with which the platinum nanoparticle was carry | supported was obtained. The supported amount of platinum nanoparticles with respect to the mass of acetylene black was 8 mass% (that is, (mass of platinum nanoparticles / mass of acetylene black) × 100 = 8 mass%). From the TEM observation, the average particle size of the platinum nanoparticles was 2.5 nm.
＜実施例２＞
ヘキサクロロ白金（ＩＶ）酸（Ｈ2ＰｔＣｌ6）を含む水溶液の使用量を１．１６ｍｌから３．２７ｍｌに変更した以外は、実施例１と同様の手順に従って、白金ナノ粒子が担持されたＦＡＢを得た。なお、アセチレンブラックの質量に対する白金ナノ粒子の担持量は、２０質量％であった。また、ＴＥＭ観察より、白金ナノ粒子の平均粒径は４．５ｎｍであった。
<Example 2>
According to the same procedure as in Example 1, except that the amount of the aqueous solution containing hexachloroplatinic (IV) acid (H 2 PtCl 6 ) was changed from 1.16 ml to 3.27 ml, the FAB supporting platinum nanoparticles was changed. Obtained. The supported amount of platinum nanoparticles with respect to the mass of acetylene black was 20% by mass. From the TEM observation, the average particle diameter of the platinum nanoparticles was 4.5 nm.
＜実施例３＞
ヘキサクロロ白金（ＩＶ）酸（Ｈ2ＰｔＣｌ6）を含む水溶液の使用量を１．１６ｍｌから６．５４ｍｌに変更した以外は、実施例１と同様の手順に従って、白金ナノ粒子が担持されたＦＡＢを得た。なお、アセチレンブラックの質量に対する白金ナノ粒子の担持量は、４０質量％であった。また、ＴＥＭ観察より、白金ナノ粒子の平均粒径は６．５ｎｍであった。
<Example 3>
According to the same procedure as in Example 1, except that the amount of the aqueous solution containing hexachloroplatinic (IV) acid (H 2 PtCl 6 ) was changed from 1.16 ml to 6.54 ml, the FAB on which platinum nanoparticles were supported was changed. Obtained. The supported amount of platinum nanoparticles with respect to the mass of acetylene black was 40% by mass. From the TEM observation, the average particle size of the platinum nanoparticles was 6.5 nm.
＜電極の作製＞
上記実施例１で作製した白金ナノ粒子が担持されたＦＡＢ（１．３５ｍｇ）と、蒸留水（６０μｌ）と、イソプロピルアルコール（４０μｌ）と、５％ナフィオン（１５μｌ、溶媒：イソプロピルアルコール）とをサンプル瓶に入れ、５分間超音波を照射して均一なスラリーを得た。得られたスラリーを、ガラス状炭素電極（５ｍｍ直径）上にキャストして、作用電極Ｅ１を製造した。
なお、実施例１で作製した白金ナノ粒子が担持されたＦＡＢの代わりに、実施例２で作製した白金ナノ粒子が担持されたＦＡＢまたは実施例３で作製した白金ナノ粒子が担持されたＦＡＢを用いた以外は、上記と同様の手順に従って、それぞれ作用電極Ｅ２または作用電極Ｅ３を製造した。
また、実施例１で作製した白金ナノ粒子が担持されたＦＡＢの代わりに、市販品である２０ｗｔ％ Ｐｔ−Ｇｒａｐｈｉｔｅ（Ｓｉｇｍａ）を用いた以外は、上記と同様の手順に従って、作用電極Ｃ１を製造した。なお、上記市販品は、本発明の製造方法とは異なる方法で作製されている。
<Production of electrode>
Sample of FAB (1.35 mg) carrying platinum nanoparticles prepared in Example 1 above, distilled water (60 μl), isopropyl alcohol (40 μl), and 5% Nafion (15 μl, solvent: isopropyl alcohol). It was put in a bottle and irradiated with ultrasonic waves for 5 minutes to obtain a uniform slurry. The obtained slurry was cast on a glassy carbon electrode (5 mm diameter) to produce a working electrode E1.
Instead of the FAB carrying the platinum nanoparticles produced in Example 1, the FAB carrying the platinum nanoparticles produced in Example 2 or the FAB carrying the platinum nanoparticles produced in Example 3 was used. Working electrode E2 or working electrode E3 was produced according to the same procedure as described above except that it was used.
Further, the working electrode C1 was produced according to the same procedure as described above except that a commercially available 20 wt% Pt-Graphite (Sigma) was used instead of the FAB carrying the platinum nanoparticles produced in Example 1. did. In addition, the said commercial item is produced by the method different from the manufacturing method of this invention.
＜サイクリックボルタンメトリー測定（その１）＞
上記で得られた作用電極Ｅ２またはＣ１をそれぞれ用いて、サイクリックボルタンメトリー測定（ＡＬＳ６００Ｃ）を実施した。
なお、参照極としてＡｇ／ＡｇＣｌ電極、対極としてＰｔ電極、電解液として０．１ＭのＨＣｌＯ4を用い、掃引速度：２０ｍＶ／ｓ、掃引範囲：−０．５〜１．２Ｖ（Ａｇ/Ａｇ＋）、温度：室温、空気雰囲気下といった条件で測定を行った。結果を図１に示す。なお、図１中、作用電極Ｅ２の結果を「２０％ Ｐｔ−ＦＡＢ」、作用電極Ｃ１の結果を「２０ｗｔ％ Ｐｔ−Ｇｒａｐｈｉｔｅ Ｓｉｇｍａ」と記載する。
図１に示すように、作用電極Ｅ２を使用した場合は、０．４〜０．６Ｖにおいてより大きなピークが確認され、酸素還元反応（ＯＲＲ）活性がより大きいことが確認された。
<Cyclic voltammetry measurement (1)>
Using the working electrode E2 or C1 obtained above, cyclic voltammetry measurement (ALS600C) was performed.
In addition, an Ag / AgCl electrode is used as a reference electrode, a Pt electrode is used as a counter electrode, and 0.1 M HClO 4 is used as an electrolyte solution. Sweep speed: 20 mV / s, sweep range: −0.5 to 1.2 V (Ag / Ag + ), Temperature: measured under conditions such as room temperature and air atmosphere. The results are shown in FIG. In FIG. 1, the result of the working electrode E2 is described as “20% Pt-FAB”, and the result of the working electrode C1 is described as “20 wt% Pt-Graphite Sigma”.
As shown in FIG. 1, when the working electrode E2 was used, a larger peak was confirmed at 0.4 to 0.6 V, and it was confirmed that the oxygen reduction reaction (ORR) activity was larger.
＜サイクリックボルタンメトリー測定（その２）＞
上記で得られた作用電極Ｅ２またはＣ１をそれぞれ用いて、サイクリックボルタンメトリー測定（ＡＬＣ６００Ｃ）を実施した。
なお、参照極としてＡｇ／ＡｇＣｌ電極、対極としてＰｔ電極、電解液として０．１ＭのＨＣｌＯ4を用い、掃引速度：２０ｍＶ／ｓ、掃引範囲：−０．５〜１．２Ｖ（Ａｇ/Ａｇ＋）、温度：室温、空気雰囲気下といった条件で１００サイクル掃引し、酸素還元反応（ＯＲＲ）活性の程度を測定した。結果を図２に示す。なお、図２中、作用電極Ｅ２の結果を「２０％ Ｐｔ−ＦＡＢ」、作用電極Ｃ１の結果を「２０ｗｔ％ Ｐｔ−Ｇｒａｐｈｉｔｅ Ｓｉｇｍａ」と記載する。
なお、図２においては、作用電極Ｅ１を用いて１サイクル掃引した際の酸素還元反応（ＯＲＲ）活性を「１００」とした相対値として記載した。酸素還元反応（ＯＲＲ）活性の程度は、ピーク強度により評価した。
図２に示すように、作用電極Ｅ２を用いた場合、１００サイクル掃引した後もより高い酸素還元反応（ＯＲＲ）活性を示すことが確認された。
<Cyclic voltammetry measurement (2)>
Using the working electrode E2 or C1 obtained above, cyclic voltammetry measurement (ALC600C) was performed.
In addition, an Ag / AgCl electrode is used as a reference electrode, a Pt electrode is used as a counter electrode, and 0.1 M HClO 4 is used as an electrolyte solution. Sweep speed: 20 mV / s, sweep range: −0.5 to 1.2 V (Ag / Ag + ), Temperature: swept 100 cycles under conditions such as room temperature and air atmosphere, and the degree of oxygen reduction reaction (ORR) activity was measured. The results are shown in FIG. In FIG. 2, the result of the working electrode E2 is described as “20% Pt-FAB”, and the result of the working electrode C1 is described as “20 wt% Pt-Graphite Sigma”.
In FIG. 2, the oxygen reduction reaction (ORR) activity when sweeping for one cycle using the working electrode E1 is shown as a relative value with “100”. The degree of oxygen reduction reaction (ORR) activity was evaluated by peak intensity.
As shown in FIG. 2, when the working electrode E2 was used, it was confirmed that the oxygen reduction reaction (ORR) activity was higher after 100 cycles of sweeping.
＜サイクリックボルタンメトリー測定（その３）＞
上記で得られた作用電極Ｅ１〜Ｅ３をそれぞれ用いて、サイクリックボルタンメトリー測定（ＡＬＳ６００Ｃ）を実施した。
なお、参照極としてＡｇ／ＡｇＣｌ電極、対極としてＰｔ電極、電解液として０．１ＭのＨＣｌＯ4を用い、掃引速度：２０ｍＶ／ｓ、掃引範囲：−０．５〜１．２Ｖ（Ａｇ/Ａｇ＋）、温度：室温、空気雰囲気下といった条件で５００サイクル掃引し、酸素還元反応（ＯＲＲ）活性の程度を測定した。結果を図３に示す。なお、図３中、作用電極Ｅ１の結果を「８％ Ｐｔ−ＦＡＢ」、作用電極Ｅ２の結果を「２０％ Ｐｔ−ＦＡＢ」、作用電極Ｅ３の結果を「４０％ Ｐｔ−ＦＡＢ」と記載する。
なお、図３においては、作用電極Ｅ３を用いて１サイクル掃引した際の酸素還元反応（ＯＲＲ）活性を「１００」とした相対値として記載した。酸素還元反応（ＯＲＲ）活性の程度は、ピーク強度により評価した。
図３に示すように、作用電極Ｅ３を用いた場合、５００サイクル掃引した後もより高い酸素還元反応（ＯＲＲ）活性を示すことが確認された。
<Cyclic voltammetry measurement (3)>
Using the working electrodes E1 to E3 obtained above, cyclic voltammetry measurement (ALS600C) was performed.
In addition, an Ag / AgCl electrode is used as a reference electrode, a Pt electrode is used as a counter electrode, and 0.1 M HClO 4 is used as an electrolyte solution. Sweep speed: 20 mV / s, sweep range: −0.5 to 1.2 V (Ag / Ag + ), Temperature: swept for 500 cycles under conditions such as room temperature and air atmosphere, and the degree of oxygen reduction reaction (ORR) activity was measured. The results are shown in FIG. In FIG. 3, the result of the working electrode E1 is described as “8% Pt-FAB”, the result of the working electrode E2 is described as “20% Pt-FAB”, and the result of the working electrode E3 is described as “40% Pt-FAB”. .
In FIG. 3, the oxygen reduction reaction (ORR) activity when sweeping for 1 cycle using the working electrode E3 is shown as a relative value with “100”. The degree of oxygen reduction reaction (ORR) activity was evaluated by peak intensity.
As shown in FIG. 3, it was confirmed that when the working electrode E3 was used, higher oxygen reduction reaction (ORR) activity was exhibited even after sweeping for 500 cycles.
Claims (4)
超音波処理が施されたアセチレンブラック、および、金属イオンを混合して、還元処理を施し、金属ナノ粒子が担持された炭素材料を製造する工程とを備える、金属ナノ粒子担持炭素材料の製造方法であって、
前記酸と前記アセチレンブラックとの質量比（前記アセチレンブラックの質量／前記酸の質量）が、１×１０ −６ 〜１×１０ −１ であり、
前記超音波の照射時間が１〜２４時間である、金属ナノ粒子担持炭素材料の製造方法。 Irradiating acetylene black with ultrasonic waves in the presence of an acid;
A process for producing a carbon material carrying a metal nanoparticle, comprising: acetylene black subjected to ultrasonic treatment; and a step of producing a carbon material carrying a metal nanoparticle by performing reduction treatment by mixing metal ions Because
The mass ratio of the acid to the acetylene black (the mass of the acetylene black / the mass of the acid) is 1 × 10 −6 to 1 × 10 −1 .
The manufacturing method of the metal nanoparticle carrying | support carbon material whose irradiation time of the said ultrasonic wave is 1 to 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013231393A JP6369848B2 (en) | 2013-11-07 | 2013-11-07 | Metal nanoparticle-supporting carbon material and method for producing the same, and method for producing functionalized exfoliated carbon material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013231393A JP6369848B2 (en) | 2013-11-07 | 2013-11-07 | Metal nanoparticle-supporting carbon material and method for producing the same, and method for producing functionalized exfoliated carbon material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2015090855A JP2015090855A (en) | 2015-05-11 |
| JP6369848B2 true JP6369848B2 (en) | 2018-08-08 |
Family
ID=53194267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013231393A Expired - Fee Related JP6369848B2 (en) | 2013-11-07 | 2013-11-07 | Metal nanoparticle-supporting carbon material and method for producing the same, and method for producing functionalized exfoliated carbon material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6369848B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7110921B2 (en) | 2018-11-07 | 2022-08-02 | トヨタ自動車株式会社 | vehicle differential |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6761998B2 (en) * | 2015-02-28 | 2020-09-30 | 株式会社フルヤ金属 | Method for manufacturing polymer protective material-free supported catalyst |
| JP7177667B2 (en) * | 2018-11-16 | 2022-11-24 | フタムラ化学株式会社 | Metal-supported activated carbon and its production method |
| KR102448706B1 (en) * | 2020-09-28 | 2022-09-29 | 한국생산기술연구원 | Method for fabricating polymer electrolyte fuel cell catalyst using small graphene and fuel cell catalyst using thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006269097A (en) * | 2005-03-22 | 2006-10-05 | Hitachi Maxell Ltd | Fuel cell and membrane electrode assembly |
| JP5294235B2 (en) * | 2006-05-25 | 2013-09-18 | 日産自動車株式会社 | Electrode material |
-
2013
- 2013-11-07 JP JP2013231393A patent/JP6369848B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7110921B2 (en) | 2018-11-07 | 2022-08-02 | トヨタ自動車株式会社 | vehicle differential |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015090855A (en) | 2015-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yang et al. | Highly acid-durable carbon coated Co3O4 nanoarrays as efficient oxygen evolution electrocatalysts | |
| US9123964B2 (en) | Fuel cell electrode and production process thereof | |
| Lüsi et al. | Oxygen reduction reaction on carbon-supported palladium nanocubes in alkaline media | |
| Cantane et al. | Electro-oxidation of ethanol on Pt/C, Rh/C, and Pt/Rh/C-based electrocatalysts investigated by on-line DEMS | |
| Zhang et al. | Simple one-pot preparation of Pd-on-Cu nanocrystals supported on reduced graphene oxide for enhanced ethanol electrooxidation | |
| CN105814723A (en) | Mould with sectors for a tyre including insulating supporting plates, and associated moulding method | |
| Zhang et al. | Novel synthesis of PtPd nanoparticles with good electrocatalytic activity and durability | |
| Jukk et al. | PdPt alloy nanocubes as electrocatalysts for oxygen reduction reaction in acid media | |
| JP6369848B2 (en) | Metal nanoparticle-supporting carbon material and method for producing the same, and method for producing functionalized exfoliated carbon material | |
| CN111509242A (en) | Electrode catalyst for fuel cell and method for activating catalyst | |
| Al-Akraa et al. | Advances in direct formic acid fuel cells: fabrication of efficient Ir/Pd nanocatalysts for formic acid electro-oxidation | |
| Sahin et al. | The effect of iridium addition to platinum on the alcohol electrooxidation activity | |
| El-Nowihy et al. | Boosted electrocatalytic oxidation of formic acid at CoOx/Pd/Au nanoparticle-based ternary catalyst | |
| Khan et al. | Robust electrocatalysts decorated three-dimensional laser-induced graphene for selective alkaline OER and HER | |
| Naik et al. | Bifunctional intermetallic PdZn nanoparticle-loaded deficient TiO 2 nanosheet electrocatalyst for electrochemical water splitting | |
| JP2015188808A (en) | Oxidation-reduction catalyst, electrode material, electrode, solar battery, membrane battery assembly for fuel battery, and fuel battery | |
| Hassan et al. | Functionalization of electrochemically prepared titania nanotubes with Pt for application as catalyst for fuel cells | |
| RU2456717C1 (en) | Method of forming catalyst layer for solid-polymer fuel cell | |
| JP6547696B2 (en) | Fuel cell electrode catalyst, method for producing the same, and fuel cell | |
| Ribeiro et al. | Platinum nanoparticles supported on nitrogen-doped carbon for ammonia electro-oxidation | |
| Kim et al. | Fabrication of iridium oxide nanoparticles supported on activated carbon powder by flashlight irradiation for oxygen evolutions | |
| Zhang et al. | Enhanced redox catalysis of electrochemical alcohol oxidation in alkaline medium by using Pt-Cu/C catalyst | |
| Hosseini et al. | MnNi2O4-MWCNTs as a nano-electrocatalyst for methanol oxidation reaction | |
| Holade et al. | Electrochemical behavior of organics oxidation on palladium-based nanocatalysts synthesized from bromide anion exchange | |
| Li et al. | Electrocatalyst with fluorinated protective layer for efficient oxygen reduction in the operating temperature of PEMFCs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20161102 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20170613 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170627 |
|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20170828 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20171026 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180123 |
|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20180316 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180523 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20180605 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180704 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6369848 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |