Search International and National Patent Collections

1. (WO2018198738) SECONDARY BATTERY POSITIVE ELECTRODE AND SECONDARY BATTERY

Pub. No.:    WO/2018/198738    International Application No.:    PCT/JP2018/014871
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue Apr 10 01:59:59 CEST 2018
IPC: H01M 4/13
H01M 4/66
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: OURA Yuji
大浦 勇士
SHIOZAKI Tomoki
塩崎 朝樹
TAKEZAWA Hideharu
武澤 秀治
NAKAYAMA Takahito
中山 貴仁
TAKAHASHI Takahiro
高橋 崇寛
FURUSAWA Daisuke
古澤 大輔
Title: SECONDARY BATTERY POSITIVE ELECTRODE AND SECONDARY BATTERY
Abstract:
A secondary battery positive electrode is provided with: a positive electrode current collector; a positive electrode mixture layer; and an intermediate layer disposed between the positive electrode current collector and the positive electrode mixture layer. The intermediate layer comprises first particles configured from an electrically conductive material, and second particles which are configured from an insulating inorganic material and have an average grain size greater than an average grain size of the first particles. The volume ratio of the first particles in the intermediate layer is not less than 25% and less than 70%. The volume ratio of the second particles in the intermediate layer is not less than 30% and less than 75%. The density of the intermediate layer is greater than 1 g/cm3 and not more than 2.5 g/cm3.