(12) United States Patent (10) Patent No.: US 9,466,839 B2 Otsuka Et Al
USOO946,6839B2 (12) United States Patent (10) Patent No.: US 9,466,839 B2 Otsuka et al. (45) Date of Patent: *Oct. 11, 2016 (54) ELECTRODE ACTIVE MATERIAL FOR (52) U.S. Cl. ELECTRICITY STORAGE DEVICE, AND CPC ............... H01 M 4/60 (2013.01): HOIG II/30 ELECTRICITY STORAGE DEVICE USING (2013.01); HOIG II/48 (2013.01); H0IG SAME II/50 (2013.01); (Continued) (75) Inventors: Yu Otsuka, Osaka (JP); Nobuhiko (58) Field of Classification Search Hojo, Osaka (JP): Takafumi CPC ................................................. HO1M 1070525 Tsukagoshi, Osaka (JP); Toshiki See application file for complete search history. Nokami, Kyoto (JP); Jun-ichi Yoshida, Kyoto (JP) (56) References Cited (73) Assignee: Panasonic Corporation, Osaka (JP) U.S. PATENT DOCUMENTS 4,343,871 A 8, 1982 Tobishima et al. (*) Notice: Subject to any disclaimer, the term of this 5,143,805 A * 9/1992 Anderman .............. HO1M 2/14 patent is extended or adjusted under 35 429,217 U.S.C. 154(b) by 964 days. (Continued) This patent is Subject to a terminal dis claimer. FOREIGN PATENT DOCUMENTS EP O 911 893 A1 4f1999 (21) Appl. No.: 13/583,880 EP 1406339 A1 4/2004 (22) PCT Filed: Mar. 11, 2011 (Continued) (86). PCT No.: OTHER PUBLICATIONS S 371 (c)(1), JP 2008222559 A Translation from Espacenet.* (2), (4) Date: Sep. 10, 2012 (Continued) (87) PCT Pub. No.: WO2011/111401 Primary Examiner — Barbara Gilliam PCT Pub. Date: Sep. 15, 2011 Assistant Examiner —Nathanael Zemui (74) Attorney, Agent, or Firm — McDermott Will & (65) Prior Publication Data Emery LLP US 2013 FOOO483.6 A1 Jan. 3, 2013 (57) ABSTRACT The present invention provides an electrode active material (30) Foreign Application Priority Data for an electricity storage device, having a structure repre sented by following formula (1).
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