US2012045692A1PendingUtilityA1

Electrical Appliance

57
Assignee: TAKEMURA YASUHIKOPriority: Aug 19, 2010Filed: Aug 17, 2011Published: Feb 23, 2012
Est. expiryAug 19, 2030(~4 yrs left)· nominal 20-yr term from priority
Inventors:Yasuhiko TakemuraTamae Moriwaka
H01M 4/02H01M 4/366H01M 4/625H01M 4/60H01M 4/661H01M 2004/021B29B 15/00H01M 4/0407Y02E60/10H01M 4/1393H01M 50/491
57
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Claims

Abstract

An object is to increase the conductivity of an electrode including active material particles and the like, which is used for a battery. Two-dimensional carbon including 1 to 10 graphenes is used as a conduction auxiliary agent, instead of a conventionally used conduction auxiliary agent extending only one-dimensionally at most, such as graphite particles, acetylene black, or carbon fibers. A conduction auxiliary agent extending two-dimensionally has higher probability of being in contact with active material particles or other conduction auxiliary agents, so that the conductivity can be improved.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An electrical appliance comprising an electrode, the electrode comprising:
 an active material particle;   a binder; and   a conduction auxiliary agent comprising two-dimensional carbon.   
     
     
         2 . The electrical appliance according to  claim 1 ,
 wherein a square root of an area of the two-dimensional carbon is greater than or equal to 100 nm and less than or equal to 100 μm.   
     
     
         3 . The electrical appliance according to  claim 1 ,
 wherein a square root of an area of the two-dimensional carbon is greater than or equal to 1 time as large as an average value of a particle size of the active material particle.   
     
     
         4 . The electrical appliance according to  claim 1 ,
 wherein a surface of the active material particle is coated with carbon.   
     
     
         5 . The electrical appliance according to  claim 1 ,
 wherein the two-dimensional carbon includes 1 to 100 graphenes.   
     
     
         6 . The electrical appliance according to  claim 1 ,
 wherein the electrode is used as an electrode of a battery.   
     
     
         7 . An electrical appliance comprising an electrode, the electrode comprising:
 an active material particle;   a binder;   a conduction auxiliary agent comprising two-dimensional carbon; and   a current collector.   
     
     
         8 . The electrical appliance according to  claim 7 ,
 wherein a square root of an area of the two-dimensional carbon is greater than or equal to 100 nm and less than or equal to 100 μm.   
     
     
         9 . The electrical appliance according to  claim 7 ,
 wherein a square root of an area of the two-dimensional carbon is greater than or equal to 1 time as large as an average value of a particle size of the active material particle.   
     
     
         10 . The electrical appliance according to  claim 7 ,
 wherein a surface of the active material particle is coated with carbon.   
     
     
         11 . The electrical appliance according to  claim 7 ,
 wherein the two-dimensional carbon includes 1 to 100 graphenes.   
     
     
         12 . The electrical appliance according to  claim 7 ,
 wherein the current collector is aluminum.   
     
     
         13 . The electrical appliance according to  claim 7 ,
 wherein the electrode is used as an electrode of a battery.   
     
     
         14 . An electrical appliance comprising:
 a first electrode, the first electrode comprising:
 an active material particle; 
 a binder; and 
 a conduction auxiliary agent comprising two-dimensional carbon; 
   a second electrode; and   a separator between the first electrode and the second electrode.   
     
     
         15 . The electrical appliance according to  claim 14 ,
 wherein a square root of an area of the two-dimensional carbon is greater than or equal to 100 nm and less than or equal to 100 μm.   
     
     
         16 . The electrical appliance according to  claim 14 ,
 wherein a square root of an area of the two-dimensional carbon is greater than or equal to 1 time as large as an average value of a particle size of the active material particle.   
     
     
         17 . The electrical appliance according to  claim 14 ,
 wherein a surface of the active material particle is coated with carbon.   
     
     
         18 . The electrical appliance according to  claim 14 ,
 wherein the two-dimensional carbon includes 1 to 100 graphenes.   
     
     
         19 . The electrical appliance according to  claim 14 ,
 wherein the second electrode comprises at least one of graphite and polyacene.   
     
     
         20 . The electrical appliance according to  claim 14 ,
 wherein the second electrode comprises copper.   
     
     
         21 . The electrical appliance according to  claim 14 ,
 wherein the separator is an insulator with pores.   
     
     
         22 . The electrical appliance according to  claim 14 ,
 wherein the first electrode and the second electrode are used as electrodes of a battery.

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