Search International and National Patent Collections

1. (WO2017068985) LITHIUM-ION CELL

Pub. No.:    WO/2017/068985    International Application No.:    PCT/JP2016/079737
Publication Date: Fri Apr 28 01:59:59 CEST 2017 International Filing Date: Fri Oct 07 01:59:59 CEST 2016
IPC: H01M 10/0525
H01M 4/131
H01M 4/36
H01M 4/505
H01M 4/525
H01M 4/587
H01M 10/0569
H01M 10/058
Applicants: HITACHI CHEMICAL COMPANY, LTD.
日立化成株式会社
Inventors: HOSHI, Kento
星 賢匠
ABE, Mie
阿部 美枝
Title: LITHIUM-ION CELL
Abstract:
Provided is a lithium-ion cell having excellent input characteristics, lifetime characteristics, and overcharging resistance. In order to achieve these objectives, the lithium-ion cell has a negative electrode that includes graphite and amorphous carbon, and a positive electrode that includes a lithium transition metal composite oxide. The content of graphite included in the negative electrode is 10-70 mass% in relation to the total amount of graphite and amorphous carbon included in the negative electrode, and the capacitance ratio, which is the ratio of the capacitance of the negative electrode to the capacitance of the positive electrode, is 1.3-2.2.