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1
JP5142428B2
Publication/Patent Number: JP5142428B2
Publication date: 2013-02-13
Application number: 2001188671
Filing date: 2001-06-21
Abstract: PROBLEM TO BE SOLVED: To provide a hydrogen storage alloy electrode which suppresses dispersion of battery characteristics
2
EP1263064B1
Publication/Patent Number: EP1263064B1
Publication date: 2011-06-22
Application number: 02253434.1
Filing date: 2002-05-16
Abstract: A negative electrode of a battery chiefly includes hydrogen absorption alloy particles (1) each having a surface layer (3). The alloy particles satisfy R2/R1 ≥ 0.004 and 5 mu m ≤ R1 ≤ 20 mu m, or more preferably 5 mu m ≤ R1 ≤ 12.5 mu m, where R1 is half of a median diameter of the particles (1) and R2 is the thickness of the surface layer (3). A negative electrode of a battery chiefly includes hydrogen absorption alloy particles (1) each having a surface layer (3). The alloy particles satisfy R2/R1 ≥ 0.004 and 5 mu m ≤ R1 ≤ 20 mu m, or more preferably 5 mu m ≤ R1 ≤ 12.5 mu m, where R1 is half of a median diameter ...more ...less
3
JP4743997B2
Publication/Patent Number: JP4743997B2
Publication date: 2011-08-10
Application number: 2001147596
Filing date: 2001-05-17
Abstract: PROBLEM TO BE SOLVED: To provide a hydrogen storage alloy electrode of high degree of activity at an initial stage of a charge/discharge cycle. SOLUTION: Provided that half of median size of particles is R1
4
US7943255B2
Publication/Patent Number: US7943255B2
Publication date: 2011-05-17
Application number: 11/546,336
Filing date: 2006-10-12
Abstract: A method of manufacturing a hydrogen-absorption alloy electrode which comprises particles of a hydrogen-absorption alloy that comprises a rare earth element, Ni, Co and Al. The method comprises subjecting the hydrogen-absorption alloy particles to an alkaline treatment in a 10 to 50 weight % NaOH solution at 60 to 140° C. for 0.5 to 5 hours such that on the surface of the particles (amount of Al on surface/amount of Al in alloy)<(amount of Co on surface/amount of Co in alloy). A method of manufacturing a hydrogen-absorption alloy electrode which comprises particles of a hydrogen-absorption alloy that comprises a rare earth element, Ni, Co and Al. The method comprises subjecting the hydrogen-absorption alloy particles to an alkaline treatment in a 10 ...more ...less
5
DE60236338D1
Publication/Patent Number: DE60236338D1
Publication date: 2010-06-24
Application number: 60236338
Filing date: 2002-04-08
6
EP1249885B1
Publication/Patent Number: EP1249885B1
Publication date: 2010-05-12
Application number: 02252501.8
Filing date: 2002-04-08
Abstract: In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of the hydrogen-absorption capacity of the hydrogen-absorption alloy. In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of ...more ...less
7
JP4536209B2
Publication/Patent Number: JP4536209B2
Publication date: 2010-09-01
Application number: 2000137296
Filing date: 2000-05-10
Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of a hydrogen storage alloy electrode
8
US7560188B2
Publication/Patent Number: US7560188B2
Publication date: 2009-07-14
Application number: 10/930,790
Filing date: 2004-09-01
Abstract: In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of the hydrogen-absorption capacity of the hydrogen-absorption alloy. In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of ...more ...less
9
JP4031620B2
Publication/Patent Number: JP4031620B2
Publication date: 2008-01-09
Application number: 2001109710
Filing date: 2001-04-09
Abstract: PROBLEM TO BE SOLVED: To provide a nickel-hydrogen storage battery for achieving a long life by regulating an application range of hydrogen storage ability of hydrogen storage alloy. SOLUTION: This nickel-hydrogen storage battery comprises a positive electrode of nickel hydroxide and a negative electrode of hydrogen storage alloy. Hydrogen storage quantity of hydrogen storage alloy of the negative electrode is controlled for charging and discharging in the range of 20-60% of hydrogen storage quantity of the alloy itself. PROBLEM TO BE SOLVED: To provide a nickel-hydrogen storage battery for achieving a long life by regulating an application range of hydrogen storage ability of hydrogen storage alloy. SOLUTION: This nickel-hydrogen storage battery comprises a positive electrode of nickel ...more ...less
10
US2007099082A1
Publication/Patent Number: US2007099082A1
Publication date: 2007-05-03
Application number: 11/546,336
Filing date: 2006-10-12
Abstract: A method of manufacturing a hydrogen-absorption alloy electrode which comprises particles of a hydrogen-absorption alloy that comprises a rare earth element, Ni, Co and Al. The method comprises subjecting the hydrogen-absorption alloy particles to an alkaline treatment in a 10 to 50 weight % NaOH solution at 60 to 140 ° C. for 0.5 to 5 hours such that on the surface of the particles (amount of Al on surface/amount of Al in alloy)<(amount of Co on surface/amount of Co in alloy). A method of manufacturing a hydrogen-absorption alloy electrode which comprises particles of a hydrogen-absorption alloy that comprises a rare earth element, Ni, Co and Al. The method comprises subjecting the hydrogen-absorption alloy particles to an alkaline treatment in a 10 ...more ...less
11
KR100662158B1
Publication/Patent Number: KR100662158B1
Publication date: 2006-12-27
Application number: 20020019114
Filing date: 2002-04-09
Abstract: PURPOSE: To provide a nickel-hydrogen storage battery for achieving a long life by regulating an application range of hydrogen storage ability of hydrogen storage alloy. CONSTITUTION: This nickel-hydrogen storage battery comprises a positive electrode of nickel hydroxide and a negative electrode of hydrogen storage alloy. Hydrogen storage quantity of hydrogen storage alloy of the negative electrode is controlled for charging and discharging in the range of 20-60% of hydrogen storage quantity of the alloy itself. PURPOSE: To provide a nickel-hydrogen storage battery for achieving a long life by regulating an application range of hydrogen storage ability of hydrogen storage alloy. CONSTITUTION: This nickel-hydrogen storage battery comprises a positive electrode of nickel hydroxide and a ...more ...less
12
US7070644B2
Publication/Patent Number: US7070644B2
Publication date: 2006-07-04
Application number: 10/856,822
Filing date: 2004-06-01
Abstract: A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 μm≦R1≦20 μm, or preferably 5 μm≦R1≦12.5 μm, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers. A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 μm≦R1≦20 μm, or preferably 5 μm≦R1≦12.5 μm, where R1 is a ...more ...less
13
DE60203347T2
Publication/Patent Number: DE60203347T2
Publication date: 2006-02-09
Application number: 60203347
Filing date: 2002-06-20
14
US2005026032A1
Publication/Patent Number: US2005026032A1
Publication date: 2005-02-03
Application number: 10/930,790
Filing date: 2004-09-01
Abstract: In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of the hydrogen-absorption capacity of the hydrogen-absorption alloy. In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of ...more ...less
15
JP3687636B2
Publication/Patent Number: JP3687636B2
Publication date: 2005-08-24
Application number: 2002224574
Filing date: 2002-08-01
Abstract: PROBLEM TO BE SOLVED: To realize a method which has not been realized conventionally for accurately detecting a degree of deterioration of a secondary battery. SOLUTION: In a secondary battery charged by constant current/voltage charging
17
JP3694391B2
Publication/Patent Number: JP3694391B2
Publication date: 2005-09-14
Application number: 16750297
Filing date: 1997-06-24
Abstract: PROBLEM TO BE SOLVED: To provide a method quantitatively evaluating the degree of deterioration regardless of the part charge/discharge hysteresis
18
DE60203347D1
Publication/Patent Number: DE60203347D1
Publication date: 2005-04-28
Application number: 60203347
Filing date: 2002-06-20
19
EP1271677B1
Publication/Patent Number: EP1271677B1
Publication date: 2005-03-23
Application number: 02254317.7
Filing date: 2002-06-20
Abstract: A hydrogen-absorption alloy electrode includes, as a principal material, particles of a hydrogen-absorption alloy containing a rare earth element, Ni, Co, Al and Mn and leads to reduced deviation in battery characteristics after charging/discharging cycles by having the size distribution of the alloy particles limited such that d90/d10 ≤ 8 and d90-d10 ≤ 50 mu m, where di (where i varies from 0 to 100) means a particle size at which cumulative size frequency with respect to the entire particles is i%. The alloy particles are constructed such that on the surface of the alloy particles, at least one of the following relationships holds: (the amount of Al on the surface/the amount of Al in the alloy) < (the amount of Co on the surface/the amount of Co in the alloy); (the amount of Mn on the surface/the amount of Mn in the alloy) < (the amount of Co on the surface/the amount of Co in the alloy); and (the amount of Al+Mn on the surface/the amount of Al+Mn in the alloy) < (the amount of Co on the surface/the amount of Co in the alloy). A hydrogen-absorption alloy electrode includes, as a principal material, particles of a hydrogen-absorption alloy containing a rare earth element, Ni, Co, Al and Mn and leads to reduced deviation in battery characteristics after charging/discharging cycles by having the size ...more ...less
20
DE69912177T2
Publication/Patent Number: DE69912177T2
Publication date: 2004-08-12
Application number: 69912177
Filing date: 1999-01-19