US2004131936A1PendingUtilityA1

Amorphous electrode compositions

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Assignee: 3M INNOVATIVE PROPERTIES COPriority: Jan 13, 2000Filed: Jul 30, 2003Published: Jul 8, 2004
Est. expiryJan 13, 2020(expired)· nominal 20-yr term from priority
Inventors:Robert L. TurnerBrian D. FredericksenLarry J. KrauseJeffrey R. DahnDominique LarcherIan CourtneyOu Mao
C22C 45/08H01M 4/364H01M 4/624H01M 4/387H01M 4/0471C23C 14/0682H01M 4/46C22C 21/00C22C 21/02H01M 4/386H01M 4/366H01M 4/405C22C 21/14H01M 4/38H01M 4/621C23C 14/022H01M 10/0525C23C 4/10C22C 45/00H01M 10/052H01M 4/44H01M 4/134C23C 4/123Y02E60/10
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Claims

Abstract

An electrode composition that includes an electrode material consisting essentially of at least one electrochemically inactive elemental metal and at least one electrochemically active elemental metal in the form of an amorphous mixture at ambient temperature. The mixture remains amorphous when the electrode composition is incorporated into a lithium battery and cycled through at least one full charge-discharge cycle at ambient temperature.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . An electrode composition comprising: 
 an electrode material consisting essentially of at least one electrochemically inactive elemental metal and at least one electrochemically active elemental metal in the form of an amorphous mixture at ambient temperature that remains amorphous when said electrode composition is incorporated into a lithium battery and cycled through at least one full charge-discharge cycle at ambient temperature.    
     
     
         2 . An electrode composition according to  claim 1  wherein said electrode material consists essentially of at least one electrochemically inactive elemental metal and a plurality of electrochemically active elemental metals.  
     
     
         3 . An electrode composition according to  claim 1  wherein said electrode material consists essentially of plurality of electrochemically inactive elemental metals and at least one electrochemically active elemental metal.  
     
     
         4 . An electrode composition according to  claim 1  wherein said electrochemically active elemental metal is selected from the group consisting of aluminum, silicon, tin, antimony, lead, germanium, magnesium, zinc, cadmium, bismuth, and indium.  
     
     
         5 . An electrode composition according to  claim 1  wherein said electrochemically inactive elemental metal is selected from the group consisting of molybdenum, niobium, tungsten, tantalum, iron, nickel, manganese, and copper.  
     
     
         6 . An electrode composition according to  claim 1  wherein said electrochemically active elemental metal is aluminum.  
     
     
         7 . An electrode composition according to  claim 1  wherein said electrochemically active elemental metal is silicon.  
     
     
         8 . An electrode composition according to  claim 1  wherein said electrochemically active elemental metal is tin.  
     
     
         9 . An electrode composition according to  claim 1  where said electrochemically active elemental metals are aluminum and silicon.  
     
     
         10 . An electrode composition according to  claim 1  wherein said electrochemically active elemental metals are silicon and tin.  
     
     
         11 . An electrode composition according to  claim 1  wherein said electrode material consists essentially of aluminum, silicon, and manganese.  
     
     
         12 . An electrode composition according to  claim 1  wherein said electrode material consists essentially of germanium, nickel, silicon, and aluminum.  
     
     
         13 . An electrode composition according to  claim 1  wherein said electrode material consists essentially of aluminum, silicon, and copper.  
     
     
         14 . An electrode composition according to  claim 1  wherein said electrode material consists essentially of silicon, tin, and copper.  
     
     
         15 . An electrode composition according to  claim 1  wherein said composition is in the form of a thin film.  
     
     
         16 . An electrode composition according to  claim 1  wherein said composition is in the form of a powder.  
     
     
         17 . A lithium ion battery comprising: 
 (a) a first electrode comprising an electrode material consisting essentially of at least one electrochemically inactive elemental metal and at least one electrochemically active elemental metal in the form of an amorphous mixture at ambient temperature;    (b) a counterelectrode; and    (c) an electrolyte separating said electrode and said counterelectrode, wherein said electrode material remains amorphous after said battery has been cycled through at least one full charge-discharge cycle.

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