US 7,527,890 B2
Sealed alkaline storage battery, electrode structure and charging method for the same, and charger for sealed alkaline storage battery
Mitsuhiro Kodama, Osaka (Japan); Seijiro Ochiai, Osaka (Japan); Kouichi Sakamoto, Osaka (Japan); Kaori Syodai, Osaka (Japan); Masaki Miyamoto, Osaka (Japan); Manabu Kanemoto, Osaka (Japan); Yoshihiro Katayama, Osaka (Japan); Minoru Kuzuhara, Osaka (Japan); and Masaharu Watada, Osaka (Japan)
Assigned to Yuasa Corporation, Takatsuki-shi, Osaka (Japan)
Appl. No. 10/543,733
PCT Filed Jan. 29, 2004, PCT No. PCT/JP2004/000811
§ 371(c)(1), (2), (4) Date Nov. 14, 2005,
PCT Pub. No. WO2004/068625, PCT Pub. Date Aug. 12, 2004.
Claims priority of application No. 2003-025160 (JP), filed on Jan. 31, 2003; and application No. 2003-043915 (JP), filed on Feb. 21, 2003.
Prior Publication US 2006/0097701 A1, May 11, 2006
Int. Cl. H01M 2/10 (2006.01); H01M 4/52 (2006.01)
U.S. Cl. 429—50  [429/54; 429/223; 29/623.5] 30 Claims
OG exemplary drawing
 
1. A sealed alkaline storage battery, comprising:
a positive electrode comprising a nickel electrode,
wherein the battery is capable of charge when the gas pressure in the battery is not higher than a specified value and incapable of charge when the gas pressure in the battery exceeds the specified value, and
wherein the positive electrode contains a compound containing at least one element selected from the group consisting of Ho, Er, Tm, Yb, Lu, Y, and Ca.