JP2022003694A - エネルギー貯蔵装置用電極フィルム、電極およびエネルギー貯蔵装置 - Google Patents
エネルギー貯蔵装置用電極フィルム、電極およびエネルギー貯蔵装置 Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 36
- 239000011230 binding agent Substances 0.000 claims abstract description 112
- 239000002245 particle Substances 0.000 claims abstract description 63
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000003990 capacitor Substances 0.000 claims abstract description 42
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 42
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims description 73
- 238000000034 method Methods 0.000 claims description 53
- 206010061592 cardiac fibrillation Diseases 0.000 claims description 47
- 230000002600 fibrillogenic effect Effects 0.000 claims description 45
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- 239000003792 electrolyte Substances 0.000 claims description 16
- 238000003490 calendering Methods 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 8
- 229910003002 lithium salt Inorganic materials 0.000 claims description 4
- 159000000002 lithium salts Chemical class 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 55
- 230000001965 increasing effect Effects 0.000 description 19
- 238000002156 mixing Methods 0.000 description 16
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- 230000008901 benefit Effects 0.000 description 10
- 238000000227 grinding Methods 0.000 description 10
- -1 lithium hexafluorophosphate Chemical compound 0.000 description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 8
- 230000006872 improvement Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 5
- 235000019241 carbon black Nutrition 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 5
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- 230000001737 promoting effect Effects 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical group O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 3
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 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
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 208000037063 Thinness Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
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- 229920002678 cellulose Polymers 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 239000002706 dry binder Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 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
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
Description
Claims (20)
- 乾燥した炭素粒子と、乾燥した超フィブリル化バインダ粒子と、を含有する自立型乾燥電極フィルムと、
集電体と
を備えたエネルギー貯蔵装置用電極。 - 乾燥電極フィルムは、約50μm〜約120μmの厚さを有する
請求項1に記載した電極。 - アノードである
請求項1に記載した電極。 - 上記自立型乾燥電極フィルムは、導電性カーボンをさらに含有する
請求項1に記載した電極。 - 電極フィルムは、約1質量%〜約5質量%の導電性カーボンを含有する
請求項1に記載した電極。 - リチウム塩を含有する電解質とイオン接触している
請求項1に記載した電極。 - 電解質がさらにカソードとイオン接触している
請求項5に記載した電極。 - 上記乾燥した超フィブリル化バインダ粒子は、上記自立型乾燥電極フィルムの約5重量%〜約7重量%を構成している
請求項1に記載した電極。 - 請求項1に記載した電極を備えたリチウムイオンキャパシタ。
- 乾燥したエネルギー貯蔵装置用電極フィルムの製造方法であって、
乾燥した炭素粒子と、乾燥したフィブリル化可能なバインダ粒子とを含有する第1の乾燥電極混合物を形成する工程と、
乾燥した電極フィルム混合物中のバインダを超フィブリル化して、該電極フィルム混合物中に超フィブリル化マトリックスを形成する工程と、
超フィブリル化された電極フィルム混合物をカレンダー処理して、自立型超フィブリル化電極フィルムを形成する工程と
を含む製造方法。 - 実質的に処理添加剤を使用しない乾式法である
請求項10に記載した製造方法。 - 自立型電極フィルムを集電体と接触させて第1電極を形成する工程
をさらに含む
請求項10に記載した製造方法。 - 第2電極を形成する工程と、
上記第1電極および上記第2電極の間にセパレータを挿入する工程と
をさらに含む
請求項12に記載した製造方法。 - 上記第1電極はアノードである
請求項12に記載した製造方法。 - カレンダー処理する上記工程は、自立型乾燥電極フィルムを圧縮してその厚さを約50μm〜約120μmとする工程を含む
請求項10に記載した製造方法。 - 約50μm〜約120μmの厚さにカレンダー処理する上記工程は、単一のカレンダー処理工程からなる
請求項15に記載した製造方法。 - 乾燥した超フィブリル化バインダ粒子は、約5重量%〜約7重量%の上記超フィブリル化マトリックスを含む
請求項10に記載した製造方法。 - 第1の混合物を形成する工程は、導電性カーボン粒子を該第1の混合物に添加する工程をさらに含む
請求項10に記載した製造方法。 - 上記第1の混合物は、約1質量%〜約5質量%の上記導電性カーボン粒子を含有する
請求項18に記載した製造方法。 - 請求項10に記載した製造方法において、
バインダを超フィブリル化する上記工程は、
乾燥した電極フィルム混合物中のバインダをフィブリル化して第1のフィブリル化マトリックスを形成する工程と、
上記第1のフィブリル化マトリックスを破壊して炭素粒子とフィブリル化バインダ粒子との粉末混合物を形成する工程と、
上記粉末混合物をフィブリル化して、上記超フィブリル化マトリックスを含む第2のフィブリル化マトリックスを形成する工程と
を含む製造方法。
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