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US 8,557,449 B2Granted
Cathode for metal-air rechargeable battery
OwnerWilson Hago, Ivan Marc Lorkovicinventors
Life of this patent
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Abstract
An air cathode for a metal-air battery is disclosed which contains a catalyst chosen to make the metal air battery more easily rechargeable. This catalyst is based on cobalt phosphate, cobalt borate mixed metal cobalt phosphates, mixed metal cobalt borates, or mixed metal cobalt phosphate borates.
Claims11
A catalyst for an air cathode of an electrochemical system, comprising at least one of the following:
- cobalt phosphate,
- cobalt borate,
- cobalt borate phosphate,
- a metal salt of formula MxCo3−xPO4 where M is a metal or metals that can form alloys with Co, selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and x is a number from 0 to 3,
- a metal salt of MyCo2−y B2O4, where M is a metal or metals that can form alloys with Co,
- selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and y is a number from 0 to 2,
- a metal salt of formula MzCo3−zBPO7 where M is a metal or metals that can form alloys with Co, selected from Ni,Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C and z is a number from 0 to 3.
4 more elements
An air cathode for an electrochemical system, comprising:
- a) An electronic conductor
- b) a binder
- c) a catalyst,
- wherein the catalyst is chosen from one at least one of the following:
- cobalt phosphate,
- cobalt borate,
- cobalt borate phosphate,
- a metal salt of formula MxCo3−xPO4 where M is a metal or metals that can form alloys with Co, selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and x is a number from 0 to 3,
- a metal salt of MyCo2−y B2O4, where M is a metal or metals that can form alloys with Co,
- selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and y is a number from 0 to 2,
- a metal salt of formula MzCo3−zBPO7 where M is a metal or metals that can form alloys with Co, selected from Ni,Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C and z is a number from 0 to 3.
8 more elements
An open electrochemical cell, comprising:
- a) a cathode, comprising:
- i) an electronic conductor ii) gas permeable binder and iii) a catalyst,
- wherein the catalyst is chosen from one at least one of the following:
- cobalt phosphate,
- cobalt borate,
- cobalt borate phosphate,
- a metal salt of formula MxCo3−xPO4 where M is a metal or metals that can form alloys with Co, selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and x is a number from 0 to 3,
- a metal salt of MyCo2−y B2O4, where M is a metal or metals that can form alloys with Co,
- selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and y is a number from 0 to 2,
- a metal salt of formula MzCo3−zBPO7 where M is a metal or metals that can form alloys with Co, selected from Ni,Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C and z is a number from 0 to 3.
- b) an electrolyte;
- c) a separator and
- d) an anode.
10 more elements
Dependencies are inferred from the claim text.