发明名称 |
POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME |
摘要 |
[Object] Provided is a means for improving cycle characteristics by suppressing electrode deterioration resulting from non-uniformity of voltage across an electrode plane in a high-capacity and large-area non-aqueous electrolyte secondary battery that includes lithium nickel-based composite oxide as a positive electrode active substance.;[Solving Means] Disclosed is a positive electrode for a non-aqueous electrolyte secondary battery used in a non-aqueous electrolyte secondary battery in which the ratio value of battery area (projected area of the battery including the battery outer casing body) to rated capacity is 5 cm2/Ah or more and the rated capacity is 3 Ah or more, the positive electrode comprising a positive electrode current collector and a positive electrode active substance layer that is formed on a surface of the positive electrode current collector and has a positive electrode active substance containing a lithium nickel-based composite oxide and a spinel type lithium manganese composite oxide, in which, when the average secondary particle diameter (D50) of the lithium nickel-based composite oxide is D50(A) [μm], the content ratio of the lithium nickel-based composite oxide in the positive electrode active substance layer is A [% by mass], the average secondary particle diameter (D50) of the spinel type lithium manganese composite oxide is D50(B) [μm], and the content ratio of the spinel type lithium manganese composite oxide in the positive electrode active substance layer is B [% by mass], the positive electrode satisfies the following Mathematical Formula 1 and Mathematical Formula 2:;[Math. 1];2.0<D50(A)/D50(B)≦15 Mathematical Formula 1;B/(A+B)≧0.05 Mathematical Formula 2 |
申请公布号 |
US2016036044(A1) |
申请公布日期 |
2016.02.04 |
申请号 |
US201414776270 |
申请日期 |
2014.03.13 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
OHARA Kenji;NITTA Yoshiaki;ICHIKAWA Satoru;KANO Gentaro;NISHIJIMA Manabu;SHIMAMURA Osamu;KAMAMURA Fumihiro;HAGIYAMA Kousuke;IBUKA Shigeo;KASEDA Manabu;SUENAGA Masanori;HIRAI Tamaki;TAKAYA Masahiro;NOMOTO Kuniharu |
分类号 |
H01M4/36;H01M4/525;H01M10/0525;H01M4/505 |
主分类号 |
H01M4/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Yokohama-shi, Kanagawa JP |