JP2020522852A - リチウム−硫黄電池用正極及びこれを含むリチウム−硫黄電池 - Google Patents
リチウム−硫黄電池用正極及びこれを含むリチウム−硫黄電池 Download PDFInfo
- Publication number
- JP2020522852A JP2020522852A JP2019566835A JP2019566835A JP2020522852A JP 2020522852 A JP2020522852 A JP 2020522852A JP 2019566835 A JP2019566835 A JP 2019566835A JP 2019566835 A JP2019566835 A JP 2019566835A JP 2020522852 A JP2020522852 A JP 2020522852A
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- Prior art keywords
- lithium
- positive electrode
- sulfur battery
- sulfur
- battery
- Prior art date
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- Granted
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- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 title claims abstract description 66
- -1 organic acid lithium salt Chemical class 0.000 claims abstract description 67
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 47
- 239000011230 binding agent Substances 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 239000000654 additive Substances 0.000 claims abstract description 20
- 239000011149 active material Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 17
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 17
- 150000007524 organic acids Chemical class 0.000 claims abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 21
- 229910052717 sulfur Inorganic materials 0.000 claims description 21
- 239000011593 sulfur Substances 0.000 claims description 20
- YNQRWVCLAIUHHI-UHFFFAOYSA-L dilithium;oxalate Chemical compound [Li+].[Li+].[O-]C(=O)C([O-])=O YNQRWVCLAIUHHI-UHFFFAOYSA-L 0.000 claims description 14
- GJEAMHAFPYZYDE-UHFFFAOYSA-N [C].[S] Chemical compound [C].[S] GJEAMHAFPYZYDE-UHFFFAOYSA-N 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 8
- QTTDHHKBHTUYCK-UHFFFAOYSA-L dilithium;propanedioate Chemical compound [Li+].[Li+].[O-]C(=O)CC([O-])=O QTTDHHKBHTUYCK-UHFFFAOYSA-L 0.000 claims description 5
- DXUUIDJNCBRHDV-UHFFFAOYSA-M lithium;hydron;oxalate Chemical compound [Li+].OC(=O)C([O-])=O DXUUIDJNCBRHDV-UHFFFAOYSA-M 0.000 claims description 4
- IYOMQTGPEVJQDR-UHFFFAOYSA-N B([O-])(O)O.[Li+].C(CC(=O)O)(=O)O.C(CC(=O)O)(=O)O Chemical compound B([O-])(O)O.[Li+].C(CC(=O)O)(=O)O.C(CC(=O)O)(=O)O IYOMQTGPEVJQDR-UHFFFAOYSA-N 0.000 claims description 3
- OMAQJPSQYYDOKO-UHFFFAOYSA-M lithium;hydron;propanedioate Chemical compound [H+].[Li+].[O-]C(=O)CC([O-])=O OMAQJPSQYYDOKO-UHFFFAOYSA-M 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical group OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- DEUISMFZZMAAOJ-UHFFFAOYSA-N lithium dihydrogen borate oxalic acid Chemical compound B([O-])(O)O.C(C(=O)O)(=O)O.C(C(=O)O)(=O)O.[Li+] DEUISMFZZMAAOJ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003891 oxalate salts Chemical group 0.000 claims description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 33
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- 238000012546 transfer Methods 0.000 abstract description 3
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- 150000001875 compounds Chemical class 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 9
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- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
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- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 1
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 1
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 description 1
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 238000011068 loading method Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- YQCIWBXEVYWRCW-UHFFFAOYSA-N methane;sulfane Chemical compound C.S YQCIWBXEVYWRCW-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000011356 non-aqueous organic solvent Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 229910052713 technetium Inorganic materials 0.000 description 1
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
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- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01M4/00—Electrodes
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
-
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
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Abstract
Description
Rは単一結合またはメタンジイル基(methanediyl group)である。)。
[実施例1]
反応器で硫黄4.2g、炭素ナノチューブ1.8gを均一に混合した後、155℃で30分間熱処理して硫黄−炭素複合体を製造した。
正極スラリー組成物を製造する時、ジリチウムオキサレートの代わりにジリチウムマロネートを同一含量で使用したことを除いて、前記実施例1と同様に行ってリチウム−硫黄電池を製造した。
正極スラリー組成物を製造する時、硫黄−炭素複合体83.2重量%、導電材4.9重量%、バインダー6.9重量%、ジリチウムオキサレート5.0重量%を混合して製造したことを除いて、前記実施例1と同様に行ってリチウム−硫黄電池を製造した。
正極スラリー組成物を製造する時、ジリチウムオキサレートの代わりにコハク酸リチウムを同一含量で使用したことを除いて、前記実施例1と同様に行ってリチウム−硫黄電池を製造した。
正極スラリー組成物を製造する時、ジリチウムオキサレートを使わずに、硫黄−炭素複合体:導電材:バインダーを88:5:7の重量比で混合して製造したことを除いて、前記実施例1と同様に行ってリチウム−硫黄電池を製造した。
ジリチウムオキサレートを使わずに、硫黄−炭素複合体:導電材:バインダーを88:5:7の重量比で混合して正極を製造し、電解質を製造する時にジリチウムオキサレートを0.5重量%で投入したことを除いては、前記実施例1と同様に行ってリチウム−硫黄電池を製造した。
正極スラリー組成物を製造する時、ジリチウムオキサレートの代わりにクエン酸リチウムを同一含量で使用したことを除いて、前記実施例1と同様に行ってリチウム−硫黄電池を製造した。
前記実施例及び比較例で製造された電池を充放電測定装置を利用して1.8ないし2.8V電圧範囲での容量を測定した。具体的に、初期0.1Cレート(rate)で放電/充電を2.5回繰り返し、0.2Cレート(rate)で充放電を3回繰り返した後、0.3Cレート(rate)で充電して0.5Cレート(rate)で放電するサイクルを繰り返して充放電効率を測定した。この時に得られた結果は下記図1に示す。
前記実施例及び比較例で製造された電池を初期0.1Cレート(rate)で放電/充電を2.5回繰り返し、0.2Cレート(rate)で充放電を3回繰り返し後、0.3Cレート(rate)で充電して0.5Cレート(rate)で放電するサイクルを繰り返して進行しながら比放電容量及びクーロン効率を測定して寿命特性を確認した。この時に得られた結果を図2及び3に示す。
Claims (6)
- 活物質、導電材、バインダー及び添加剤を含み、
前記添加剤は、ジカルボキシル基を含む有機酸リチウム塩である、リチウム−硫黄電池用正極。 - 前記有機酸リチウム塩は、オキサレート基またはマロネート基を含む、請求項1に記載のリチウム−硫黄電池用正極。
- 前記有機酸リチウム塩は、ジリチウムオキサレート、リチウム水素オキサレート、リチウムビスオキサレートボレート、ジリチウムマロネート、リチウム水素マロネート及びリチウムビスマロネートボレートからなる群から選択される1種以上を含む、請求項1に記載のリチウム−硫黄電池用正極。
- 前記有機酸リチウム塩は、リチウム−硫黄電池用正極全体100重量%を基準にして0.1重量%以上5重量%未満で含まれる、請求項1から3のいずれか一項に記載のリチウム−硫黄電池用正極。
- 前記活物質は硫黄−炭素複合体である、請求項1から4のいずれか一項に記載のリチウム−硫黄電池用正極。
- 請求項1から5のいずれか一項に記載の正極を含む、リチウム−硫黄電池。
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KR102244905B1 (ko) | 2021-04-26 |
EP3624236A1 (en) | 2020-03-18 |
WO2019022358A1 (ko) | 2019-01-31 |
CN110800136B (zh) | 2022-08-05 |
CN110800136A (zh) | 2020-02-14 |
US11811018B2 (en) | 2023-11-07 |
JP7062188B2 (ja) | 2022-05-06 |
KR20190012858A (ko) | 2019-02-11 |
EP3624236A4 (en) | 2020-06-10 |
US20200203756A1 (en) | 2020-06-25 |
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