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:
Oct. 20, 2015
Filed:
Aug. 14, 2013
Korea Institute of Science and Technology, Seoul, KR;
Hyung Sun Kim, Seoul, KR;
Byung Won Cho, Seoul, KR;
Si Hyoung Oh, Gyeongsangbuk-do, KR;
Ju Hyeon Ahn, Seoul, KR;
Yong Ho Lee, Incheon, KR;
Won Chang Choi, Gyeonggi-do, KR;
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul, KR;
Abstract
There is provided a preparation method of a sodium vanadium oxide-based (NaVO) anode material for a sodium ion secondary battery synthesized by mixing particles of precursors such as sodium carbonate (NaCO) and vanadium oxide (VO) and pyrolyzing a mixture in a mixed gas atmosphere composed of 90 mol % of nitrogen gas and 10 mol % of hydrogen gas through a solid-state reaction. The sodium vanadium oxide-based anode material prepared according to the present invention shows a small change in volume caused by an initial irreversible capacity and continuous charge/discharge reactions, and thus it is useful for providing a next-generation sodium ion secondary battery having stable charge/discharge characteristics and cycle performance.