US2003124421A1PendingUtilityA1

Non-aqueous electrochemical cells

48
Priority: Dec 14, 2001Filed: Feb 10, 2003Published: Jul 3, 2003
Est. expiryDec 14, 2021(expired)· nominal 20-yr term from priority
Inventors:Nikolai N. IssaevMichael Pozin
H01M 4/661H01M 50/145H01M 50/119Y02P70/50H01M 6/166H01M 4/502Y10T29/49108Y02E60/10
48
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Claims

Abstract

An electrochemical secondary cell is disclosed. The cell includes a cathode, an anode, a cathode current collector including stainless steel, and an electrolyte containing a perchlorate salt and a second salt.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . An electrochemical cell, comprising: 
 a cathode;    an anode;    a cathode current collector comprising steel; and    an electrolyte comprising a perchlorate salt and a second salt, wherein the electrochemical cell is a secondary cell.    
     
     
         2 . The cell of  claim 1 , wherein the cathode current collector comprises a stainless steel.  
     
     
         3 . The cell of  claim 1 , wherein the steel is selected from the group consisting of a 200 series stainless steel, a 300 series stainless steel, a 400 series stainless steel, and a cold roll steel.  
     
     
         4 . The cell of  claim 1 , wherein the perchlorate salt comprises LiClO 4 .  
     
     
         5 . The cell of  claim 1 , wherein the perchlorate salt comprises a material selected from the group consisting of Ca(ClO 4 ) 2 , Ba(ClO 4 ) 2 , Al(ClO 4 ) 3 , Mg(ClO 4 ) 2 , KClO 4 , tetrabutylammonium perchlorate, and tetraethylammonium perchlorate.  
     
     
         6 . The cell of  claim 1 , wherein the electrolyte comprises between about 300 ppm and about 50,000 ppm by weight of the perchlorate salt.  
     
     
         7 . The cell of  claim 1 , wherein the electrolyte comprises between about 300 ppm and about 40,000 ppm by weight of the perchlorate salt.  
     
     
         8 . The cell of  claim 1 , wherein the electrolyte comprises between about 300 ppm and about 30,000 ppm by weight of the perchlorate salt.  
     
     
         9 . The cell of  claim 1 , wherein the electrolyte comprises between about 300 ppm and about 20,000 ppm by weight of the perchlorate salt.  
     
     
         10 . The cell of  claim 1 , wherein the electrolyte comprises between about 300 ppm and about 10,000 ppm by weight of the perchlorate salt.  
     
     
         11 . The cell of  claim 1 , wherein the electrolyte comprises between about 300 ppm and about 5,000 ppm by weight of the perchlorate salt.  
     
     
         12 . An electrochemical cell, comprising: 
 a cathode;    an anode;    a cathode current collector including steel; and    an electrolyte containing a perchlorate salt and a second salt, wherein the electrochemical cell is a primary cell.    
     
     
         13 . The cell of  claim 12 , wherein the cathode comprises manganese oxide.  
     
     
         14 . The cell of  claim 12 , wherein the anode comprises lithium.  
     
     
         15 . The cell of  claim 12 , wherein the cathode current collector comprises a stainless steel.  
     
     
         16 . The cell of  claim 12 , wherein the steel is selected from the group consisting of a 200 series stainless steel, a 300 series stainless steel, a 400 series stainless steel, and a cold roll steel.  
     
     
         17 . The cell of  claim 12 , wherein the perchlorate salt comprises LiClO 4 .  
     
     
         18 . The cell of  claim 12 , wherein the perchlorate salt comprises a material selected from the group consisting of Ca(ClO 4 ) 2 , Ba(ClO 4 ) 2 , Al(ClO 4 ) 3 , Mg(ClO 4 ) 2 , KClO 4 , tetrabutylanmonium perchlorate, and tetraethylammonium perchlorate.  
     
     
         19 . The cell of  claim 12 , wherein the electrolyte comprises between about 300 ppm and about 50,000 ppm by weight of the perchlorate salt.  
     
     
         20 . The cell of  claim 12 , wherein the electrolyte comprises between about 300 ppm and about 40,000 ppm by weight of the perchlorate salt.  
     
     
         21 . The cell of  claim 12 , wherein the electrolyte comprises between about 300 ppm and about 30,000 ppm by weight of the perchlorate salt.  
     
     
         22 . The cell of  claim 12 , wherein the electrolyte comprises between about 300 ppm and about 20,000 ppm by weight of the perchlorate salt.  
     
     
         23 . The cell of  claim 12 , wherein the electrolyte comprises between about 300 ppm and about 10,000 ppm by weight of the perchlorate salt.  
     
     
         24 . The cell of  claim 12 , wherein the electrolyte comprises between about 300 ppm and about 5,000 ppm by weight of the perchlorate salt.  
     
     
         25 . An electrochemical cell, comprising: 
 a cathode;    an anode;    an electrolyte comprising a perchlorate salt;    a first portion comprising a steel; and    a second portion in electrical contact with the first portion, wherein the first and second portions are in electrical contact with the cathode.    
     
     
         26 . The cell of  claim 25 , wherein the first portion comprises a stainless steel.  
     
     
         27 . The cell of  claim 25 , wherein the steel is selected from the group consisting of a 200 series stainless steel, a 300 series stainless steel, a 400 series stainless steel, and a cold roll steel.  
     
     
         28 . The cell of  claim 25 , wherein the first portion is defined by a cathode current collector.  
     
     
         29 . The cell of  claim 25 , wherein the first portion is defined by a container of the cell.  
     
     
         30 . The cell of  claim 25 , wherein the first portion is defined by a tab, a rivet, or a contact plate.  
     
     
         31 . The cell of  claim 25 , wherein the first portion has at least one dimension greater than 0.5 mm.  
     
     
         32 . The cell of  claim 25 , wherein the first portion has at least one dimension greater than 1 mm.  
     
     
         33 . The cell of  claim 25 , wherein the first portion has at least one dimension greater than 2 mm.  
     
     
         34 . The cell of  claim 25 , wherein the first and second portion physically contact each other.  
     
     
         35 . The cell of  claim 25 , wherein the second portion comprises a steel.  
     
     
         36 . The cell of  claim 25 , wherein the second portion comprises a stainless steel.  
     
     
         37 . The cell of  claim 25 , wherein the second portion comprises a composition different than a composition of the first portion.  
     
     
         38 . The cell of  claim 25 , wherein the second portion comprises a composition the same as a composition of the first portion.  
     
     
         39 . The cell of  claim 25 , wherein the cathode comprises manganese oxide.  
     
     
         40 . The cell of  claim 25 , wherein the anode comprises lithium.  
     
     
         41 . The cell of  claim 25 , wherein the cell is a primary cell.  
     
     
         42 . The cell of  claim 25 , wherein the cell is a secondary cell.  
     
     
         43 . The cell of  claim 25 , wherein the perchlorate salt comprises LiClO 4 .  
     
     
         44 . The cell of  claim 25 , wherein the perchlorate salt comprises a material selected from the group consisting of Ca(ClO 4 ) 2 , Ba(ClO 4 ) 2 , Al(ClO 4 ) 3 , Mg(ClO 4 ) 2 , KClO 4 , tetrabutylammonium perchlorate, and tetraethylammonium perchlorate.  
     
     
         45 . The cell of  claim 25 , wherein the electrolyte comprises between about 300 ppm and about 50,000 ppm by weight of the perchlorate salt.  
     
     
         46 . The cell of  claim 25 , wherein the electrolyte comprises between about 300 ppm and about 40,000 ppm by weight of the perchlorate salt.  
     
     
         47 . The cell of  claim 25 , wherein the electrolyte comprises between about 300 ppm and about 30,000 ppm by weight of the perchlorate salt.  
     
     
         48 . The cell of  claim 25 , wherein the electrolyte comprises between about 300 ppm and about 20,000 ppm by weight of the perchlorate salt.  
     
     
         49 . The cell of  claim 25 , wherein the electrolyte comprises between about 300 ppm and about 10,000 ppm by weight of the perchlorate salt.  
     
     
         50 . The cell of  claim 25 , wherein the electrolyte comprises between about 300 ppm and about 5,000 ppm by weight of the perchlorate salt.  
     
     
         51 . An electrochemical cell, comprising: 
 a cathode;    an anode;    an electrolyte comprising a perchlorate salt;    a first portion comprising aluminum; and    a second portion in electrical contact with the first portion, wherein the first and second portions are in electrical contact with the cathode.    
     
     
         52 . The cell of  claim 51 , wherein the first portion comprises an aluminum alloy.  
     
     
         53 . The cell of  claim 51 , wherein the first portion is defined by a tab, a rivet, or a contact plate.  
     
     
         54 . The cell of  claim 51 , wherein the second portion comprises a material different than a material of the first portion.  
     
     
         55 . The cell of  claim 51 , wherein the second portion comprises steel or stainless steel.  
     
     
         56 . A method of reducing corrosion, comprising: 
 adding a perchlorate salt to a non-aqueous solution.    
     
     
         57 . The method of  claim 56 , further comprising 
 placing the solution, a cathode, an anode, and a member comprising steel into an electrochemical cell.    
     
     
         58 . The method of  claim 57 , wherein the member comprises a stainless steel.  
     
     
         59 . The method of  claim 57 , wherein the steel is selected from the group consisting of a 200 series stainless steel, a 300 series stainless steel, a 400 series stainless steel, and a cold roll steel.  
     
     
         60 . The method of  claim 56 , wherein the perchlorate salt comprises LiClO 4 .  
     
     
         61 . The method of  claim 56 , wherein the perchlorate salt comprises a material selected from the group consisting of Ca(ClO 4 ) 2 , Ba(ClO 4 ) 2 , Al(ClO 4 ) 3 , Mg(ClO 4 ) 2 , KClO 4 , tetrabutylammonium perchlorate, and tetraethylammonium perchlorate.  
     
     
         62 . The method of  claim 56 , wherein the electrolyte comprises between about 300 ppm and about 50,000 ppm by weight of the perchlorate salt.  
     
     
         63 . The method of  claim 56 , wherein the electrolyte comprises between about 300 ppm and about 40,000 ppm by weight of the perchlorate salt.  
     
     
         64 . The method of  claim 56 , wherein the electrolyte comprises between about 300 ppm and about 30,000 ppm by weight of the perchlorate salt.  
     
     
         65 . The method of  claim 56 , wherein the electrolyte comprises between about 300 ppm and about 20,000 ppm by weight of the perchlorate salt.  
     
     
         66 . The method of  claim 56 , wherein the electrolyte comprises between about 300 ppm and about 10,000 ppm by weight of the perchlorate salt.  
     
     
         67 . The method of  claim 56 , wherein the electrolyte comprises between about 300 ppm and about 5,000 ppm by weight of the perchlorate salt.

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