US2013143121A1PendingUtilityA1

Positive Electrode Active Material For Lithium-Ion Battery, A Positive Electrode For Lithium-Ion Battery, And Lithium-Ion Battery

Assignee: KOBAYASHI SHUNSUKEPriority: Dec 3, 2010Filed: Jul 22, 2011Published: Jun 6, 2013

Est. expiryDec 3, 2030(~4.4 yrs left)· nominal 20-yr term from priority

Inventors:Shunsuke Kobayashi Yoshio Kajiya

H01M 10/052H01M 4/525H01M 4/131H01M 4/485H01M 4/13H01M 4/0471H01M 10/0525Y02E60/10H01M 4/36

PatentIndex Score

Cited by

References

Claims

Abstract

The present invention provides a positive electrode active material for lithium ion batteries having excellent battery property. The positive electrode active material for lithium ion batteries is represented by composition formula: Li x Ni 1-y M y O 2+α , wherein M is Co as an essential component and at least one species selected from a group consisting of Sc, Ti, V, Cr, Mn, Fe, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B and Zr, 0.9≦x≦1.2, 0<y≦0.7, α>0.05, and an average particle size (D50) is 5 μm to 15 μm.

Claims

exact text as granted — not AI-modified

1 . A positive electrode active material for lithium ion batteries, represented by composition formula: Li x Ni 1−y M y O 2+α , wherein
 M is Co as an essential component and at least one species selected from a group consisting of Sc, Ti, V, Cr, Mn, Fe, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B and Zr, 0.9≦x≦1.2, 0&lt;y≦0.7, α&gt;0.05, and   an average particle size (D50) is 5 μm to 15 μm.   
     
     
         2 . The positive electrode active material for lithium ion batteries of  claim 1 , wherein the average particle size (D50) is 7 μm to 13 μm. 
     
     
         3 . The positive electrode active material for lithium ion batteries of  claim 1 , wherein M is at least one species selected from a group consisting of Mn and Co. 
     
     
         4 . The positive electrode active material for lithium ion batteries of  claim 1 ,
 wherein α&gt;0.15.   
     
     
         5 . The positive electrode active material for lithium ion batteries of  claim 4 , wherein α&gt;0.20. 
     
     
         6 . The positive electrode active material for lithium ion batteries of  claim 1 ,
 wherein D90 is 20 μm or less in particle size distribution.   
     
     
         7 . A positive electrode for lithium ion batteries comprising the positive electrode active material for lithium ion batteries of  claim 1 . 
     
     
         8 . A lithium ion battery comprising the positive electrode for lithium ion batteries of  claim 7 .

Join the waitlist — get patent alerts

Track US2013143121A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.