JP2011222498A - 蓄電装置及び蓄電装置の作製方法 - Google Patents
蓄電装置及び蓄電装置の作製方法 Download PDFInfo
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- 238000003860 storage Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000011149 active material Substances 0.000 claims abstract description 116
- 239000003792 electrolyte Substances 0.000 claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 73
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 68
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 239000002228 NASICON Substances 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 9
- -1 iron ions Chemical class 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000010450 olivine Substances 0.000 claims description 8
- 229910052609 olivine Inorganic materials 0.000 claims description 8
- 229910052744 lithium Inorganic materials 0.000 abstract description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 13
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000010408 film Substances 0.000 description 76
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 36
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 20
- 229910001416 lithium ion Inorganic materials 0.000 description 20
- 238000004544 sputter deposition Methods 0.000 description 12
- 229910012425 Li3Fe2 (PO4)3 Inorganic materials 0.000 description 11
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000007774 positive electrode material Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007773 negative electrode material Substances 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910018119 Li 3 PO 4 Inorganic materials 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
- 239000004020 conductor Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910018111 Li 2 S-B 2 S 3 Inorganic materials 0.000 description 1
- 229910018130 Li 2 S-P 2 S 5 Inorganic materials 0.000 description 1
- 229910018133 Li 2 S-SiS 2 Inorganic materials 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000005678 chain carbonates Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
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- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
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Abstract
【解決手段】少なくとも、正極と、正極と電解質を介して対向するように設けられた負極とを有する蓄電装置であり、正極は、集電体と、集電体上に設けられた活物質を含む膜とで構成される。該活物質を含む膜は、3.5≦h/g≦4.5、0.6≦g/f≦1.1、かつ0≦e/f≦1.3を満たすLieFefPgOh及び3.5≦d/c≦4.5、0.6≦c/b≦1.8、かつ0.7≦a/b≦2.8を満たすLiaFebPcOdを含み、電解液と接する領域に3.5≦d/c≦4.5、0.6≦c/b≦1.8、かつ0.7≦a/b≦2.8を満たすLiaFebPcOdを有する。
【選択図】図1
Description
103 集電体
105 活物質(A)を含む膜
107 活物質(B)を含む膜
201 電解質
203 負極
205 セパレータ
207 活物質を含む膜
209 集電体
211 電源
213 リチウムイオン
215 電子
217 負荷
Claims (10)
- 負極と、
前記負極と電解質を介して対向する正極と、を有し、
前記正極は、集電体と、前記集電体上に形成される活物質を含む膜と、を有し、
前記活物質を含む膜において前記電解質と接する領域は、3.5≦d/c≦4.5かつ0.6≦c/b≦1.8かつ0.7≦a/b≦2.8を満たすLiaFebPcOdで形成されることを特徴とする蓄電装置。 - 負極と、
前記負極と電解質を介して対向する正極と、を有し、
前記正極は、集電体と、第2の活物質を含む膜と、前記集電体及び前記第2の活物質を含む膜の間に形成される第1の活物質を含む膜と、を有し、
前記第2の活物質を含む膜は、3.5≦d/c≦4.5、0.6≦c/b≦1.8、かつ0.7≦a/b≦2.8を満たすLiaFebPcOdで形成され、
前記第1の活物質を含む膜は、3.5≦h/g≦4.5、0.6≦g/f≦1.1、かつ0≦e/f≦1.3を満たすLieFefPgOhで形成されることを特徴とする蓄電装置。 - 負極と、
前記負極と電解質を介して対向する正極と、を有し、
前記正極は、集電体と、第2の活物質を含む膜と、前記集電体及び前記第2の活物質を含む膜の間に形成される第1の活物質を含む膜と、を有し、
前記第2の活物質を含む膜は、3.5≦d/c≦4.5、0.6≦c/b≦1.8、かつ0.7≦a/b≦2.8を満たすLiaFebPcOdで形成され、
前記第1の活物質を含む膜は、3.5≦h/g≦4.5、0.6≦g/f≦1.1、かつ0≦e/f≦1.3を満たすLieFefPgOh及び3.5≦d/c≦4.5、0.6≦c/b≦1.8、かつ0.7≦a/b≦2.8を満たす前記LiaFebPcOdで形成されることを特徴とする蓄電装置。 - 請求項1乃至3のいずれか一項において、前記LiaFebPcOdは非晶質構造であることを特徴とする蓄電装置。
- 請求項1乃至3のいずれか一項において、前記LiaFebPcOdは結晶構造であることを特徴とする蓄電装置。
- 請求項5において、前記LiaFebPcOdはナシコン構造であることを特徴とする蓄電装置。
- 請求項2または請求項3において、
前記LieFefPgOhは非晶質構造であることを特徴とする蓄電装置。 - 請求項2または請求項3において、
前記LieFefPgOhは結晶構造であることを特徴とする蓄電装置。 - 請求項8において、前記LieFefPgOhはオリビン構造であることを特徴とする蓄電装置。
- 2価の鉄イオンを含むリン酸鉄リチウムを主成分とするターゲットを、酸素分圧が0.01%以下の雰囲気でスパッタリングして、集電体上に第1の活物質を含む膜を形成し、
前記2価の鉄イオンを含むリン酸鉄リチウムを主成分とするターゲットを、酸素分圧が0.1%以上の雰囲気でスパッタリングして、前記第1の活物質を含む膜上に第2の活物質を含む膜を形成して正極を作製し、
前記第1の活物質は、2価の鉄イオンを含むリン酸鉄リチウムを有し、
前記第2の活物質は、3価の鉄イオンを含むリン酸鉄リチウムであることを特徴とする蓄電装置の作製方法。
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