Interesting patent application - Na batteries.
1. SODIUM ION BATTERIES
PCT 12-05-02 02097907 WO NDN- 172-0058-4682-0
INVENTOR(S)- BARKER, Jeremy 10 Home Farm Close, Shipton-Under-Wynchwood, Oxforshire, OX7-6EH, England United Kingdom
INVENTOR(S)- YAZID, Saidi, M. 301 Conestoga Way, Henderson, NV 89015 United States of America
INVENTOR(S)- SWOYER, Jeffrey, L. 301 Conestoga Way, Henderson, NV 89015 United States of America
APPLICANT(S)- VALENCE TECHNOLOGY, INC. 301 Conestoga Way, Henderson, NV 89015 United States of America
APPLICANT(S)- BARKER, Jeremy 10 Home Farm Close, Shipton-Under-Wynchwood, Oxforshire, OX7-6EH, England United Kingdom
APPLICANT(S)- YAZID, Saidi, M. 301 Conestoga Way, Henderson, NV 89015 United States of America
APPLICANT(S)- SWOYER, Jeffrey, L. 301 Conestoga Way, Henderson, NV 89015 United States of America
DATE FILED- 2002-04-04
PUBLICATION NUMBER- 02097907 WO
DOCUMENT TYPE- A2
PUBLICATION DATE- 2002-12-05
PATENT PRIORITY INFO- 60/283,560, 2001-04-06, United States of America
ATTORNEY, AGENT, OR FIRM- DESCHERE, Linda, M., Harness, Dickey & Pierce, P.L.C., P.O. Box 828, Bloomfield Hills, MI 48303, United States of America
INTERNATIONAL PATENT CLASS- H01M; 4/58; 10/40
PCT APP. NO.- PCT/US02/10775
FILING LANGUAGE- English
LANGUAGE- English
Sodium ion batteries are based on sodium based active materials selected among compounds of the general formula: A(sub)a(end sub)M(sub)b(end sub)(XY(sub)4(end sub))(sub)c(end sub)Z-(sub)d(end sub), wherein a comprises sodium, M comprises one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, Z is OH or halogen, and XY(sub)4(end sub) represents phosphate or a similar group. The anode of the battery includes a carbon material that is capable of inserting sodium ions. The carbon anode cycles reversibly at a specific capacity greater than 100mAh/g. |
