US2014120380A1PendingUtilityA1

Active material

Assignee: TOSHIBA KKPriority: Oct 30, 2012Filed: Oct 25, 2013Published: May 1, 2014

Est. expiryOct 30, 2032(~6.3 yrs left)· nominal 20-yr term from priority

Inventors:Hiroki Inagaki Wen Zhang Yasuhiro Harada Norio Takami

H01M 10/486H01M 10/48H01M 4/131C01G 33/00C01P 2004/61C01P 2002/32C01P 2006/12C01G 45/00H01M 4/485C01G 49/0072H01M 4/505H01M 4/525C01G 23/005C01P 2006/40H01M 10/425C01G 49/0018C01G 33/006Y02E60/10

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References

Claims

Abstract

According to one embodiment, an active material is provided. The active material includes orthorhombic system oxide represented by the following formula: Li x M1M2 2 O 6 . In this formula, 0≦x≦5, M1 is at least one selected from the group consisting of Fe and Mn, and M2 is at least one selected from the group consisting of Nb, Ta and V.

Claims

exact text as granted — not AI-modified

What is claimed is: 
     
         1 . An active material comprising an orthorhombic system oxide represented by the following formula:
   Li x M1M2 2 O 6      wherein 0≦x≦5, M1 is at least one selected from the group consisting of Fe and Mn, and M2 is at least one selected from the group consisting of Nb, Ta and V.   
     
     
         2 . The active material according to  claim 1 , wherein the orthorhombic system oxide is represented by the formula Li x FeNb 2 O 6 , the formula Li x FeV 2 O 6 , the formula Li x Fe 0.5 Mn 0.5 Nb 2 O 6 , the formula Li x MnNb 2 O 6 , or the formula Li x MnTa 2 O 6 . 
     
     
         3 . The active material according to  claim 1 , wherein the orthorhombic system oxide is represented by the formula Li x FeNb 2 O 6  or the formula Li x FeV 2 O 6 . 
     
     
         4 . The active material according to  claim 1 , wherein the orthorhombic system oxide has a BET specific surface area of 1 m 2 /g or more but 50 m 2 /g or less. 
     
     
         5 . A nonaqueous electrolyte battery, comprising:
 a negative electrode comprising the active material according to  claim 1 ;   a positive electrode; and   a nonaqueous electrolyte.   
     
     
         6 . The nonaqueous electrolyte battery to  claim 5 , wherein the negative electrode further comprising niobium titanium composite oxide comprising monoclinic-system oxide. 
     
     
         7 . The nonaqueous electrolyte battery to  claim 6 , wherein the niobium titanium composite oxide is selected from the group consisting of Li x Nb 2 TiO 7 , Li x Nb 10 Ti 2 O 29 , Li x Nb 14 TiO 37 , and Li x Nb 24 TiO 62 . 
     
     
         8 . A battery pack comprising the nonaqueous electrolyte battery according to  claim 5 . 
     
     
         9 . The battery pack according to  claim 8 , comprising a plurality of the nonaqueous electrolyte battery. 
     
     
         10 . The battery pack according to  claim 9 , wherein the plurality of the nonaqueous electrolyte battery are electrically connected to each other in series, in parallel or in the combination thereof. 
     
     
         11 . The battery pack according to  claim 8 , further comprising:
 a protective circuit configured to detect the voltage of the nonaqueous electrolyte battery.

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