JP6270004B2 - リチウム硫黄電池のカソード材料、およびリチウム硫黄電池 - Google Patents
リチウム硫黄電池のカソード材料、およびリチウム硫黄電池 Download PDFInfo
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- JP6270004B2 JP6270004B2 JP2016556540A JP2016556540A JP6270004B2 JP 6270004 B2 JP6270004 B2 JP 6270004B2 JP 2016556540 A JP2016556540 A JP 2016556540A JP 2016556540 A JP2016556540 A JP 2016556540A JP 6270004 B2 JP6270004 B2 JP 6270004B2
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- Prior art keywords
- lithium
- carbon
- particles
- battery
- cathode
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- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 title claims description 31
- 239000010406 cathode material Substances 0.000 title claims description 31
- 239000002245 particle Substances 0.000 claims description 135
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 133
- 229910052799 carbon Inorganic materials 0.000 claims description 113
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 claims description 58
- 239000002131 composite material Substances 0.000 claims description 36
- 239000006182 cathode active material Substances 0.000 claims description 15
- 229910021389 graphene Inorganic materials 0.000 claims description 9
- 150000001721 carbon Chemical class 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 39
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 39
- 239000011149 active material Substances 0.000 description 30
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- 229910018091 Li 2 S Inorganic materials 0.000 description 16
- 239000002243 precursor Substances 0.000 description 16
- 239000002904 solvent Substances 0.000 description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 15
- 239000006185 dispersion Substances 0.000 description 14
- 229910052744 lithium Inorganic materials 0.000 description 13
- 238000006722 reduction reaction Methods 0.000 description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 11
- 239000008151 electrolyte solution Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 229910052717 sulfur Inorganic materials 0.000 description 11
- 239000011593 sulfur Substances 0.000 description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 239000006229 carbon black Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- RKGLUDFWIKNKMX-UHFFFAOYSA-L dilithium;sulfate;hydrate Chemical compound [Li+].[Li+].O.[O-]S([O-])(=O)=O RKGLUDFWIKNKMX-UHFFFAOYSA-L 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 8
- 239000006183 anode active material Substances 0.000 description 8
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000002608 ionic liquid Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 159000000002 lithium salts Chemical group 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
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- 230000002829 reductive effect Effects 0.000 description 3
- 239000011163 secondary particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910052800 carbon group element Inorganic materials 0.000 description 2
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000005077 polysulfide Substances 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000006245 Carbon black Super-P Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 150000001724 carbon group elements Chemical class 0.000 description 1
- 239000002134 carbon nanofiber Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- TXLQIRALKZAWHN-UHFFFAOYSA-N dilithium carbanide Chemical compound [Li+].[Li+].[CH3-].[CH3-] TXLQIRALKZAWHN-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000010299 mechanically pulverizing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 natural graphite Chemical compound 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000011022 opal Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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- 239000002002 slurry Substances 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
- C01B17/24—Preparation by reduction
- C01B17/26—Preparation by reduction with carbon
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- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
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- H01M2300/0025—Organic electrolyte
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- 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
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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Description
図1に示すように本実施形態のリチウム硫黄電池(以下「電池」という)10は、カソード11と、アノード12と、セパレータ13と、電解液14と、を具備する。カソード(正極)11は(硫化リチウム/炭素)複合体を含むカソード活物質層11Aと集電体11Bとからなる。アノード(負極)12は金属リチウムからなる。
一方、カソード11のカソード活物質層11Aは、リチウムイオンを吸蔵放出可能なカソード活物質として、以下の(式2)に示すように硫黄を有する。
充電開始型、すなわち初期状態が放電状態の電池10では、アノード12はアノード活物質として金属リチウムを含み、カソード11はカソード活物質として硫化リチウムを含む。
次に、図2に示すフローチャートに沿って、リチウム硫黄系二次電池である電池10のカソード材料の製造方法について説明する。
図3Aに示すように、硫酸リチウム溶液に炭素粒子40が分散された第1の分散液30が作製される。
硫酸リチウムが溶解しない沈殿剤である第2の溶媒が第1の分散液30に加えられる。すると、図3Bに示すように炭素粒子40の外面に硫酸リチウム42が析出する。言い替えれば、第1の分散液30が、硫酸リチウム42が外面に形成された炭素粒子40からなる前駆体粒子である(硫酸リチウム/炭素)複合体41が水に分散した第2の分散液31に変化する。
第2の分散液31を濾過し、エタノールにて洗浄し、真空乾燥(40℃)を12時間行うことで。硫酸リチウムが外面上に析出した炭素粒子からなる黒色粉末(Li2SO4−GNAs Mix)である前駆体粒子41が得られる。なお、濾過しないで、分散液の温度を上げて溶媒を蒸発させて前駆体粒子41を分離してもよい。
前駆体粒子41(図3B、図5)を不活性雰囲気下で約800℃に加熱することで、活物質粒子44である(硫化リチウム/炭素)複合体(図3C、図7A、図7B)が作製される。
不活性雰囲気としては、例えば、アルゴンおよび窒素等の不活性ガス中、または、真空中である。
(硫酸リチウム/炭素)複合体41の炭素粒子40は、(式3)に示した還元反応により消費されるため、小さくなる。残った炭素粒子40Aは、硫化リチウムの電子伝導性の担体としての機能を有する。
次に、(硫化リチウム/炭素)複合体44からなるカソード材料を用いて電池10が作製され、充放電特性が評価された。
すでに説明したように、(硫化リチウム/炭素)複合体44の78.3重量%が硫化リチウムであるため、上記混合物の、(硫化リチウム/炭素)複合体77重量%は、硫化リチウム60重量%とGNAs17重量%とからなる。そして、上記混合物の炭素成分はカーボンブラック13重量%とGNAs17重量%とからなり、合計で30重量%である。
F3CH2C−O−CF2CF2H
溶媒の添加量は、例えば、イオン伝導率(30℃)が、0.1mS/cm以上、粘度(30℃)が、10mPa・s以下となるように設定される。
放電では、2.2Vおよび2.0Vに平坦部が出現した。2.2V平坦部は硫黄(S6)から(Li2SN:4≦N≦8)への還元反応に相当する。そして、2.0V平坦部は(Li2SN:4≦N≦8)から、Li2S2さらにLi2Sへの還元反応に相当する。
次に、カソード材料として活物質粒子44Aを有するリチウム硫黄電池10A等について説明する。本実施形態のリチウム硫黄電池10A等は、リチウム硫黄電池10等と類似しているので同じ構成要素には同じ符号を付し説明は省略する。
次に、アノード材料としてグラファイトを有するリチウム硫黄電池10B等について説明する。本実施形態のリチウム硫黄電池10B等は、リチウム硫黄電池10等と類似しているので同じ構成要素には同じ符号を付し説明は省略する。
図16に示すように、電池10Bは、金属リチウムをアノード活物質とした電池10、10Aと略同じ特性が得られた。
11・・・カソード
11A・・・カソード活物質層
11B・・・集電体
12・・・アノード
12A・・・アノード活物質層
12B・・・集電体
13・・・セパレータ
14・・・電解液
20・・・コインセルケース
21・・・スペーサ
22・・・スプリング
23・・・蓋
24・・・ガスケット
40、40A・・・炭素粒子
41・・・(硫酸リチウム/炭素)複合体(前駆体粒子)
42・・・硫酸リチウム層
43・・・硫化リチウム層
44、44A・・・(硫化リチウム/炭素)複合体(活物質粒子)
Claims (8)
- 外面に硫化リチウムが形成された、グラフェン積層微小板の凝集体である炭素粒子からなる(硫化リチウム/炭素)複合体であるカソード活物質粒子を有することを特徴とするリチウム硫黄電池のカソード材料。
- 前記カソード活物質粒子の平均粒径が1μm未満であることを特徴とする請求項1に記載のリチウム硫黄電池のカソード材料。
- 前記カソード活物質粒子の外面に前記炭素粒子の一部が露出していることを特徴とする請求項2に記載のリチウム硫黄電池のカソード材料。
- 前記グラフェン積層微小板の比表面積が200m 2 /g以上であることを特徴とする請求項3に記載のリチウム硫黄電池のカソード材料。
- 前記(硫化リチウム/炭素)複合体の、炭素含有量が10重量%以上30重量%以下であることを特徴とする請求項1から請求項4のいずれか1項に記載のリチウム硫黄電池のカソード材料。
- 前記(硫化リチウム/炭素)複合体に加えて、さらに導電性炭素粒子を含むことを特徴とする請求項1から請求項5のいずれか1項に記載のリチウム硫黄電池のカソード材料。
- 前記導電性炭素粒子/前記(硫化リチウム/炭素)複合体の炭素の重量比が、0.33以上0.50以下であることを特徴とする請求項6に記載のリチウム硫黄電池のカソード材料。
- 請求項1から請求項7のいずれか1項に記載のリチウム硫黄電池のカソード材料を有することを特徴とするリチウム硫黄電池。
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JP7082405B2 (ja) | 2018-06-29 | 2022-06-08 | 学校法人早稲田大学 | リチウム硫黄電池の製造方法 |
JP7480238B2 (ja) | 2018-04-30 | 2024-05-09 | ライテン・インコーポレイテッド | リチウムイオン電池及び電池材料 |
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