JP6952251B2 - 電池用正極活物質、および、電池 - Google Patents
電池用正極活物質、および、電池 Download PDFInfo
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- JP6952251B2 JP6952251B2 JP2018551028A JP2018551028A JP6952251B2 JP 6952251 B2 JP6952251 B2 JP 6952251B2 JP 2018551028 A JP2018551028 A JP 2018551028A JP 2018551028 A JP2018551028 A JP 2018551028A JP 6952251 B2 JP6952251 B2 JP 6952251B2
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 125000005207 tetraalkylammonium group Chemical group 0.000 description 1
- 125000005497 tetraalkylphosphonium group Chemical group 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000012856 weighed raw material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
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Description
LixMeyOαXβ ・・・式(1)
ここで、前記Meは、Mn、Ni、Co、Fe、Al、Sn、Cu、Nb、Mo、Bi、Ti、V、Cr、Y、Zr、Zn、Na、K、Ca、Mg、Pt、Au、Ag、Ru、Ta、W、La、Ce、Pr、Sm、Eu、Dy、Erからなる群より選択される一種または二種以上の元素であり、
前記Xは、F、Cl、Br、I、N、Sからなる群より選択される二種以上の元素であり、かつ、
x、y、αおよびβは、
0.75≦x≦2.25、
0.75≦y≦1.50、
1≦α<3、0<β≦2、
を満たす。
実施の形態1における電池用正極活物質は、空間群Fm−3mに属する結晶構造を有し、下記の組成式(1)により表される化合物を含む。
ここで、前記Meは、Mn、Ni、Co、Fe、Al、Sn、Cu、Nb、Mo、Bi、Ti、V、Cr、Y、Zr、Zn、Na、K、Ca、Mg、Pt、Au、Ag、Ru、Ta、W、La、Ce、Pr、Sm、Eu、Dy、Erからなる群より選択される一種または二種以上の元素である。
0.75≦x≦2.25、
0.75≦y≦1.50、
1≦α<3、
0<β≦2、
を満たす。
以下に、実施の形態1の電池用正極活物質に含まれる上述の化合物の製造方法の一例が、説明される。
以下、実施の形態2が説明される。なお、上述の実施の形態1と重複する説明は、適宜、省略される。
[正極活物質の作製]
MnCl2とLiMnO2とMnO2とLi2OおよびLiFをMnCl2:LiMnO2:MnO2:Li2O:LiF=1:12:11:4:8のモル比でそれぞれ秤量した。
次に、70質量部の上述の化合物と、20質量部の導電剤と、10質量部のポリフッ化ビニリデン(PVDF)と、適量の2−メチルピロリドン(NMP)とを、混合した。これにより、正極合剤スラリーを得た。
上述の実施例1から、Meの種類、Xの種類、および、各元素の比率を、それぞれ、変えた。
MnCl2とLiMnO2とMnO2とLi2OおよびLiFをMnCl2:LiMnO2:MnO2:Li2O:LiF=1:12:11:4:8のモル比でそれぞれ秤量した。
公知の手法を用いてコバルト酸リチウム(LiCoO2)を得た。
上述の実施例と同様の手法で、Xを含まないリチウムマンガン複合化合物(LiMn0.8O2)の粒子を得た。
正極に対する電流密度を0.5mA/cm2に設定し、5.2Vの電圧に達するまで、実施例1の電池を充電した。
11 ケース
12 正極集電体
13 正極活物質層
14 セパレータ
15 封口板
16 負極集電体
17 負極活物質層
18 ガスケット
21 正極
22 負極
Claims (13)
- 空間群Fm−3mに属する結晶構造を有し、下記の組成式(1)により表される化合物を含む、
電池用正極活物質。
LixMeyOαXβ・・・式(1)
ここで、前記Meは、Mn、Ni、Coからなる群より選択される一種または二種以上の元素を含み、
前記Xは、F、Cl、Br、I、N、Sからなる群より選択される二種以上の元素であり、
かつ、x、y、αおよびβは、
0.75≦x≦2.25、
0.75≦y≦1.50、
1≦α<3、
0<β≦2、
2.0≦α/β≦5.0、を満たす。 - 前記化合物を、主成分として含む、
請求項1に記載の電池用正極活物質。 - 前記Meは、Mnを含む、
請求項1または2に記載の電池用正極活物質。 - 前記Xは、Fを含む、
請求項1から3のいずれかに記載の電池用正極活物質。 - xおよびyは、0.5≦x/y≦3.0、を満たす、
請求項1から4のいずれかに記載の電池用正極活物質。 - xおよびyは、1.17≦x/y≦1.75、を満たす、
請求項5に記載の電池用正極活物質。 - αは、2.0≦α≦2.8、を満たす、
請求項1から6のいずれかに記載の電池用正極活物質。 - βは、0.2≦β≦1.0、を満たす、
請求項1から7のいずれかに記載の電池用正極活物質。 - x、y、αおよびβは、0.67≦(x+y)/(α+β)≦1.15、を満たす、
請求項1から8のいずれかに記載の電池用正極活物質。 - x、y、αおよびβは、0.67≦(x+y)/(α+β)≦0.95、を満たす、
請求項9に記載の電池用正極活物質。 - 請求項1から10のいずれかに記載の電池用正極活物質を含む正極と、
負極と、
電解質と、を備える、
電池。 - 前記負極は、リチウムを吸蔵および放出しうる負極活物質を含み、前記電解質は、非水電解液である、
請求項11に記載の電池。 - 前記負極は、リチウムを吸蔵および放出しうる負極活物質を含み、前記電解質は、固体電解質である、
請求項11に記載の電池。
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JP7445876B2 (ja) | 2019-03-26 | 2024-03-08 | パナソニックIpマネジメント株式会社 | 固体電解質材料およびそれを用いた電池 |
KR102126898B1 (ko) * | 2019-12-05 | 2020-06-25 | 주식회사 에스엠랩 | 양극활물질, 이의 제조방법 및 이를 포함하는 양극을 포함한 리튬이차전지 |
KR102339864B1 (ko) * | 2020-02-14 | 2021-12-16 | 서울대학교산학협력단 | 리튬 이차 전지용 양극 활물질 및 이의 제조 방법 |
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