The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2019
Filed:
Feb. 02, 2015
Mitsui Chemicals, Inc., Tokyo, JP;
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Katsunori Nishiura, Chiba, JP;
Masaki Saruyama, Neyagawa, JP;
Yoshihiro Sakata, Ichikawa, JP;
Hitoshi Onishi, Chiba, JP;
MITSUI CHEMICALS, INC., Tokyo, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
A negative electrode for a lithium-ion secondary cell, the negative electrode including a layered body of a collector and a negative electrode active material layer containing an alloy-based material (A) containing silicon or tin as a constituent element, a carbon coating (C) that covers the surface of the alloy-based material (A), carbon particles (B), and a binder (D), wherein the negative electrode for a lithium-ion secondary cell is characterized in that the total pore volume and average pore diameter of the carbon particles (B), as measured by nitrogen gas adsorption, satisfy the ranges of 1.0×10to 1.0×10cm/g and 20 to 50 nm, respectively. The negative electrode for a lithium-ion secondary cell, and a lithium-ion secondary cell in which such a negative electrode for a lithium-ion secondary cell is used, have a high capacity and excellent cycle characteristics.