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1. (WO2018221309) SECONDARY CELL AND DEVICE INCLUDING SECONDARY CELL

Pub. No.:    WO/2018/221309    International Application No.:    PCT/JP2018/019600
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 23 01:59:59 CEST 2018
IPC: H01M 10/36
H01M 4/42
H01M 4/50
Applicants: NAMICS CORPORATION
ナミックス株式会社
Inventors: FUJITA Takayuki
藤田 隆幸
Title: SECONDARY CELL AND DEVICE INCLUDING SECONDARY CELL
Abstract:
The present invention provides a secondary cell of high electromotive force, in which the amount of lead used is reduced, or no lead is used. A secondary cell that includes: a positive electrode that contains a positive electrode active material containing manganese oxide; a negative electrode that contains a negative electrode active material containing at least one selected from zinc, gallium, and tin; and an electrolytic solution containing at least one selected from phosphoric acid and an organic oxo acid, and for which the pH is below 7 at 25°C. The open circuit voltage of the secondary cell when fully charged is greater than 1.6V.