JP7475008B2 - プロトン伝導体および燃料電池 - Google Patents
プロトン伝導体および燃料電池 Download PDFInfo
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- 239000004020 conductor Substances 0.000 title claims description 98
- 239000000446 fuel Substances 0.000 title claims description 26
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 76
- 229910052697 platinum Inorganic materials 0.000 claims description 39
- 239000012528 membrane Substances 0.000 claims description 34
- -1 oxoacid ions Chemical class 0.000 claims description 34
- 239000002608 ionic liquid Substances 0.000 claims description 22
- 229910021645 metal ion Inorganic materials 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 21
- 125000002091 cationic group Chemical group 0.000 claims description 18
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 claims description 16
- 239000013256 coordination polymer Substances 0.000 claims description 15
- 229920001795 coordination polymer Polymers 0.000 claims description 15
- 239000003792 electrolyte Substances 0.000 claims description 14
- 238000001179 sorption measurement Methods 0.000 claims description 12
- QZIQJVCYUQZDIR-UHFFFAOYSA-N mechlorethamine hydrochloride Chemical compound Cl.ClCCN(C)CCCl QZIQJVCYUQZDIR-UHFFFAOYSA-N 0.000 claims description 9
- 229920000554 ionomer Polymers 0.000 claims description 7
- 150000004715 keto acids Chemical class 0.000 claims description 4
- 125000000049 diethylmethylammonium substituent group Chemical group [H]C([H])([H])C([H])([H])[N+](*)(C([H])([H])[H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- QWNFEDACBXJNSI-UHFFFAOYSA-N diethyl(methyl)azanium;trifluoromethanesulfonate Chemical compound CC[NH+](C)CC.[O-]S(=O)(=O)C(F)(F)F QWNFEDACBXJNSI-UHFFFAOYSA-N 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 58
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 38
- 238000009792 diffusion process Methods 0.000 description 20
- 235000011007 phosphoric acid Nutrition 0.000 description 19
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 17
- 238000002484 cyclic voltammetry Methods 0.000 description 13
- 229910052739 hydrogen Inorganic materials 0.000 description 13
- 238000010248 power generation Methods 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- 230000007423 decrease Effects 0.000 description 12
- 125000000129 anionic group Chemical group 0.000 description 11
- 239000001257 hydrogen Substances 0.000 description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 10
- 125000004429 atom Chemical group 0.000 description 9
- 125000004430 oxygen atom Chemical group O* 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000007772 electrode material Substances 0.000 description 5
- 239000003446 ligand Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000004693 Polybenzimidazole Substances 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 231100000572 poisoning Toxicity 0.000 description 4
- 230000000607 poisoning effect Effects 0.000 description 4
- 229920002480 polybenzimidazole Polymers 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004455 differential thermal analysis Methods 0.000 description 3
- 238000000914 diffusion-ordered spectroscopy Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001348 diffusion-ordered spectrum Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- GNVRJGIVDSQCOP-UHFFFAOYSA-N n-ethyl-n-methylethanamine Chemical compound CCN(C)CC GNVRJGIVDSQCOP-UHFFFAOYSA-N 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- RAXXELZNTBOGNW-UHFFFAOYSA-O Imidazolium Chemical compound C1=C[NH+]=CN1 RAXXELZNTBOGNW-UHFFFAOYSA-O 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- CLBRCZAHAHECKY-UHFFFAOYSA-N [Co].[Pt] Chemical compound [Co].[Pt] CLBRCZAHAHECKY-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical compound [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001472 pulsed field gradient Methods 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8663—Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers
- H01M4/8668—Binders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
- H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/94—Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0045—Room temperature molten salts comprising at least one organic ion
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Description
(カソード電極側) 2H++1/2O2+2e-→H2O
この際、アノード電極120では、水素が触媒反応によって、電子(e-)とプロトン(H+)に電離され、プロトン(H+)は電解質膜110を移動する。一方、カソード電極130では、アノード電極120側から移動してきたプロトン(H+)、外部から流通してきた電子、および空気中の酸素(O2)が反応して、水(H2O)が生成される。
図7に示すように、実施例のプロトン輸率は0.64であり、図8に示すように、第2比較例のプロトン輸率は0.56であった。実施例は、第2比較例よりもプロトン輸率が向上しており、損失が少ないことがわかる。このため、実施例のプロトン伝導体を用いた膜電極接合体では、起電力の低下を抑制でき、発電性能の低下を抑制できる。
本発明は上述の実施形態に限定されることなく、本発明の趣旨を逸脱しない範囲内で、以下のように種々変形可能である。また、上記各実施形態に開示された手段は、実施可能な範囲で適宜組み合わせてもよい。
120、130 電極
121a、131a 触媒
121b、131b アイオノマ
Claims (7)
- 白金を含む触媒に接するように設けられるプロトン伝導体であって、
カチオン性有機分子、金属イオンおよびオキソ酸イオンを含んでおり、
前記カチオン性有機分子、前記金属イオンおよび前記オキソ酸イオンは配位高分子を構成しており、
前記カチオン性有機分子と前記オキソ酸イオンとを含んだプロトン性イオン液体が前記金属イオンに配位して前記配位高分子が生成されているプロトン伝導体。 - 前記カチオン性有機分子は、ジエチルメチルアンモニウム(dema)である請求項1に記載のプロトン伝導体。
- 前記オキソ酸イオンを構成するオキソ酸は、トリフルオロメタンスルホナート(TfO-)である請求項1または2に記載のプロトン伝導体。
- 前記プロトン性イオン液体は、トリフルオロメタンスルホナート-ジエチルメチルアンモニウム([dema][TfO])である請求項1ないし3のいずれか1つに記載のプロトン伝導体。
- 前記金属イオンは、Alイオンである請求項1ないし4のいずれか1つに記載のプロトン伝導体。
- 白金に対する吸着エネルギの絶対値が-1.76eVの絶対値よりも小さい請求項1ないし5のいずれか1つに記載のプロトン伝導体。
- 電解質膜(110)と、
前記電解質膜を挟むように設けられた一対の電極(120、130)とを備え、
前記電極は、白金を含む触媒(121a、131a)と、請求項1ないし6のいずれか1つに記載のプロトン伝導体からなるアイオノマ(121b、131b)と、を含んでいる燃料電池。
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JP2020200953A JP7475008B2 (ja) | 2020-12-03 | 2020-12-03 | プロトン伝導体および燃料電池 |
US17/539,281 US11824241B2 (en) | 2020-12-03 | 2021-12-01 | Proton conductor and fuel cell |
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JP2020200953A JP7475008B2 (ja) | 2020-12-03 | 2020-12-03 | プロトン伝導体および燃料電池 |
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JP7475008B2 true JP7475008B2 (ja) | 2024-04-26 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000133285A (ja) | 1998-10-29 | 2000-05-12 | Toyota Motor Corp | 固体高分子電解質膜およびその調製方法 |
JP2008291061A (ja) | 2007-05-22 | 2008-12-04 | Toyota Motor Corp | プロトン伝導性配位高分子錯体化合物 |
JP2009029846A (ja) | 2007-07-24 | 2009-02-12 | Nissan Motor Co Ltd | 電解質、電極触媒層、燃料電池およびそれらの製造方法 |
JP2011023170A (ja) | 2009-07-14 | 2011-02-03 | Fuji Electric Holdings Co Ltd | 燃料電池用電極の製造方法 |
WO2011074325A1 (ja) | 2009-12-16 | 2011-06-23 | トヨタ自動車株式会社 | 常温溶融塩、電極、電池、チャージアップ防止剤および試料の観察方法 |
JP2014116276A (ja) | 2012-04-16 | 2014-06-26 | Denso Corp | プロトン伝導体、プロトン伝導体の製造方法、及び燃料電池 |
JP2016131098A (ja) | 2015-01-14 | 2016-07-21 | Tdk株式会社 | 電極、およびそれを用いた電気化学デバイス |
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KR100647296B1 (ko) | 2004-11-16 | 2006-11-23 | 삼성에스디아이 주식회사 | 금속 촉매 및 이를 포함한 전극을 채용한 연료전지 |
JP6148663B2 (ja) | 2011-03-29 | 2017-06-14 | カウンシル オブ サイエンティフィック アンド インダストリアル リサーチ | 膜電極接合体(MEAs)を作成する改良プロセス |
KR20180076957A (ko) * | 2016-12-28 | 2018-07-06 | 현대자동차주식회사 | 연료전지용 캐소드, 및 이를 포함하는 막전극접합체의 제조방법 |
JP2020113367A (ja) * | 2019-01-08 | 2020-07-27 | 株式会社デンソー | プロトン伝導体および燃料電池 |
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- 2020-12-03 JP JP2020200953A patent/JP7475008B2/ja active Active
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000133285A (ja) | 1998-10-29 | 2000-05-12 | Toyota Motor Corp | 固体高分子電解質膜およびその調製方法 |
JP2008291061A (ja) | 2007-05-22 | 2008-12-04 | Toyota Motor Corp | プロトン伝導性配位高分子錯体化合物 |
JP2009029846A (ja) | 2007-07-24 | 2009-02-12 | Nissan Motor Co Ltd | 電解質、電極触媒層、燃料電池およびそれらの製造方法 |
JP2011023170A (ja) | 2009-07-14 | 2011-02-03 | Fuji Electric Holdings Co Ltd | 燃料電池用電極の製造方法 |
WO2011074325A1 (ja) | 2009-12-16 | 2011-06-23 | トヨタ自動車株式会社 | 常温溶融塩、電極、電池、チャージアップ防止剤および試料の観察方法 |
JP2014116276A (ja) | 2012-04-16 | 2014-06-26 | Denso Corp | プロトン伝導体、プロトン伝導体の製造方法、及び燃料電池 |
JP2016131098A (ja) | 2015-01-14 | 2016-07-21 | Tdk株式会社 | 電極、およびそれを用いた電気化学デバイス |
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JP2022088856A (ja) | 2022-06-15 |
US20220181663A1 (en) | 2022-06-09 |
US11824241B2 (en) | 2023-11-21 |
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