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. 08, 2013
Filed:
Mar. 22, 2012
Anna Esmeralda K. Javier, Berkeley, CA (US);
Nitash Pervez Balsara, El Cerrito, CA (US);
Shrayesh Naran Patel, Berkeley, CA (US);
Daniel T. Hallinan, Jr., Walnut Creek, CA (US);
Anna Esmeralda K. Javier, Berkeley, CA (US);
Nitash Pervez Balsara, El Cerrito, CA (US);
Shrayesh Naran Patel, Berkeley, CA (US);
Daniel T. Hallinan, Jr., Walnut Creek, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
Redox reactions that occur at the electrodes of batteries require transport of both ions and electrons to the active centers. Reported is the synthesis of a block copolymer that exhibits simultaneous electronic and ionic conduction. A combination of Grignard metathesis polymerization and click reaction was used successively to synthesize the block copolymer containing regioregular poly(3-hexylthiophene) (P3HT) and poly(ethylene oxide) (PEO) segments. The P3HT-PEO/LiTFSI mixture was then used to make a lithium battery cathode with LiFePOas the only other component. All-solid lithium batteries of the cathode described above, a solid electrolyte and a lithium foil as the anode showed capacities within experimental error of the theoretical capacity of the battery. The ability of P3HT-PEO to serve all of the transport and binding functions required in a lithium battery electrode is thus demonstrated.