US2003049520A1PendingUtilityA1

Battery

46
Assignee: GILLETTE CO A DELAWARE COPriority: Sep 18, 2000Filed: Oct 22, 2002Published: Mar 13, 2003
Est. expirySep 18, 2020(expired)· nominal 20-yr term from priority
Inventors:Stuart M. DavisEnoch I. Wang
H01M 50/124H01M 6/08H01M 4/52H01M 4/50H01M 4/42H01M 4/06H01M 2300/0085H01M 10/52Y10T29/49108Y02E60/10
46
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Claims

Abstract

An alkaline battery has a cathode including a hydrogen absorbing material and an anode including zinc free of lead, mercury, or cadmium.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A primary alkaline battery comprising: 
 a cathode comprising a hydrogen-absorbing cathode material;    an anode comprising zinc free of lead, mercury or cadmium;    a separator; and    an alkaline electrolyte.    
     
     
         2 . The battery of  claim 1 , wherein the zinc is free of lead, mercury and cadmium.  
     
     
         3 . The battery of  claim 1 , wherein the zinc includes indium or bismuth.  
     
     
         4 . The battery of  claim 1 , wherein the zinc includes 25 ppm-1000 ppm indium or 25 ppm-1000 ppm bismuth.  
     
     
         5 . The battery of  claim 1 , wherein the zinc includes 25 ppm-1000 ppm indium and 25 ppm-1000 ppm bismuth.  
     
     
         6 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material includes a nickel oxyhydroxide, a copper oxide, a barium permanganate, a chemically-produced manganese dioxide, a silver oxide, or a silver permanganate.  
     
     
         7 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material includes a nickel oxyhydroxide.  
     
     
         8 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material includes a silver oxide.  
     
     
         9 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material includes a silver permanganate.  
     
     
         10 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material includes a copper oxide.  
     
     
         11 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material includes a barium permanganate.  
     
     
         12 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material includes a chemically-produced manganese dioxide.  
     
     
         13 . The battery of  claim 1 , wherein the hydrogen-absorbing cathode material absorbs at least 20% more hydrogen than an equivalent amount of electrochemically-produced manganese dioxide within an equivalent time interval.  
     
     
         14 . A method of manufacturing a primary alkaline battery comprising: 
 assembling a cathode comprising a hydrogen-absorbing cathode material, an anode comprising zinc free of lead, mercury or cadmium, a separator, and an alkaline electrolyte to form the alkaline battery.    
     
     
         15 . The method of  claim 12 , wherein the zinc is free of lead, mercury and cadmium.  
     
     
         16 . The method of  claim 14 , wherein the zinc includes indium or bismuth.  
     
     
         17 . The method of  claim 14 , wherein the zinc includes 25 ppm-1000 ppm indium or 25 ppm-1000 ppm bismuth.  
     
     
         18 . The method of  claim 14 , wherein the zinc includes 25 ppm-1000 ppm indium and 25 ppm-1000 ppm bismuth.  
     
     
         19 . The method of  claim 14 , wherein the hydrogen-absorbing cathode material includes a nickel oxyhydroxide, a copper oxide, a barium permanganate, a chemically-produced manganese dioxide, a silver oxide, or a silver permanganate.  
     
     
         20 . The method of  claim 14 , wherein the hydrogen-absorbing cathode material absorbs at least 20% more hydrogen than an equivalent amount of electrochemically-produced manganese dioxide within an equivalent time interval.  
     
     
         21 . A primary alkaline battery comprising: 
 a cathode comprising an active material that absorbs hydrogen more rapidly than an equivalent amount of electrochemically-produced manganese dioxide within an equivalent time interval;    an anode comprising zinc free of lead, mercury, or cadmium; and    an alkaline electrolyte.    
     
     
         22 . The battery  claim 21 , wherein the actual material includes a nickel oxyhydroxide, a copper oxide, a barium permanganate, a chemically-produced manganese dioxide, a silver oxide or a silver permanganate.  
     
     
         23 . The battery of  claim 21 , wherein the zinc includes lead, mercury, and cadmium.  
     
     
         24 . The batter of  claim 21 , wherein the active material absorbs at least 20% more than an equivalent amount of electrochemically-produced manganese dioxide within an equivalent time interval.

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