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:
Jul. 30, 2019
Filed:
Nov. 18, 2015
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Tomonari Takeuchi, Osaka, JP;
Hiroyuki Kageyama, Osaka, JP;
Atsushi Sakuda, Osaka, JP;
Hikari Sakaebe, Osaka, JP;
Abstract
A composite containing phosphorus, lithium, iron, sulfur, and carbon as constituent elements wherein lithium sulfide (LiS) is present in an amount of 90 mol % or more, and wherein the crystallite size calculated from the half-width of a diffraction peak based on the (111) plane of LiS as determined by X-ray powder diffraction measurement is 80 nm or less. The composite exhibits a high capacity (in particular, a high discharge capacity) useful as an electrode active material for a lithium-ion secondary battery (in particular, a cathode active material for a lithium-ion secondary battery), without the need for stepwise pre-cycling treatment.