Global patent index - EP 1027742 A1

EP 1027742 A1 2000-08-16 - NICKEL HYDROXIDE ACTIVE MATERIAL FOR ELECTRO CHEMICAL CELLS

Title (en)

NICKEL HYDROXIDE ACTIVE MATERIAL FOR ELECTRO CHEMICAL CELLS

Title (de)

AKTIVES NICKEL-HYDROXID-MATERIAL FÜR ELEKTRO-CHEMISCHE ZELLEN

Title (fr)

MATIERE ACTIVE D'HYDROXYDE DE NICKEL POUR CELLULES ELECTROCHIMIQUES

Publication

EP 1027742 A1 (EN)

Application

EP 99942286 A

Priority

  • US 9918782 W
  • US 14845198 A

Abstract (en)

[origin: WO0014818A1] An alpha phase nickel hydroxide active material for use in the positive electrodes of rechargeable alkaline electrochemical cells in which the material comprises nickel and hydroxide constituents and first and second stabilizing cations. The first stabilizing cation is selected from the group comprising: Al, Co, La, Ce, Y, Nd, Mg, In and Mn. The second stabilizing cation is selected from the group comprising: Mg, Zn, Co, Sr, Y, Nd, La, Ce and In. The alpha phase material exhibits an increased discharge plateau voltage profile, is structurally stable and possesses multi-electron per nickel atom transfer capabilities. The higher discharge plateau voltage and improved storage capacity translates into a significant increase in specific energy density and power density in operating cells.

IPC 1-7 (main, further and additional classification)

H01M 4/32; H01M 4/26

IPC 8 full level (invention and additional information)

C01G 53/00 (2006.01); C01G 53/04 (2006.01); H01M 4/26 (2006.01); H01M 4/32 (2006.01); H01M 4/52 (2010.01); H01M 10/30 (2006.01)

CPC (invention and additional information)

H01M 4/52 (2013.01); C01G 53/006 (2013.01); C01G 53/04 (2013.01); H01M 4/32 (2013.01); C01P 2002/72 (2013.01); C01P 2002/82 (2013.01); C01P 2002/88 (2013.01); C01P 2006/40 (2013.01); H01M 10/30 (2013.01); Y02E 60/124 (2013.01)

Citation (search report)

See references of WO 0014818A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0014818 A1 20000316; CN 1287693 A 20010314; EP 1027742 A1 20000816; JP 2002524832 A 20020806

INPADOC legal status

2001-01-03 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20001106

2000-08-16 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000512

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE