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:
Jan. 01, 2002
Filed:
Dec. 21, 1999
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a novel sulfurated hydrocarbon material having electrochemical activity, high capacity, and good reversibility, which can be used as an electrode material for the secondary battery. More particularly, it relates to a sulfurated hydrocarbon material, which is prepared by the sulfuration of the olefinic unsaturated hydrocarbon, in the presence of a amine promoter. The sulfurated hydrocarbon material contains from 40 to 88% of sulfur and is represented by the formula (CH S ) , wherein: x is a real number in the range of 0.5≦x≦1.75; y is a real number in the range of 0.2≦y≦3.2; and z is an integer equal to or greater than 5. Also, the present invention provides a secondary battery comprising i) a positive electrode comprising said sulfurated hydrocarbon compound; ii) a polymer electrolyte; and iii) a negative electrode made of alkali metal or alkali metal alloy.