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:
Jun. 28, 2016
Filed:
Dec. 19, 2013
Jianhong Liu, Shenzhen, CN;
Hongzhen Zhang, Shenzhen, CN;
Qianling Zhang, Shenzhen, CN;
Dayong Gui, Shenzhen, CN;
Chuanxin He, Shenzhen, CN;
Caizhen Zhu, Shenzhen, CN;
Jianhong Liu, Shenzhen, CN;
Hongzhen Zhang, Shenzhen, CN;
Qianling Zhang, Shenzhen, CN;
Dayong Gui, Shenzhen, CN;
Chuanxin He, Shenzhen, CN;
Caizhen Zhu, Shenzhen, CN;
SHENZHEN EIGEN-EQUATION GRAPHENE TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
A method for modifying a positive electrode material for a lithium-ion battery. The method includes: a) grinding a mixture of manganese dioxide and lithium carbonate, and calcining the mixture at no less than a temperature of 600° C. for no less than 20 hrs in the presence of air, to yield a powdery lithium manganese oxide (LiMnO); b) adding a precursor for forming a graphene-like structure to the powdery LiMnO, mixing, curing at a constant temperature of no less than 180° C. for between 2 and 4 hrs, grinding, and calcining at no less than a temperature of 500° C. for between 1 and 50 hrs in the presence of an inert gas, to yield a composite powder comprising a graphene-like structure and LiMnO; and c) collecting and sintering the composite powder at a temperature of between 300 and 500° C. for between 1 and 10 hrs in the presence of air.