Patent
C2/m-structured cathode material for lithium-ion battery
| العنوان: | C2/m-structured cathode material for lithium-ion battery |
|---|---|
| Patent Number: | 8,663,848 |
| تاريخ النشر: | March 04, 2014 |
| Appl. No: | 13/296931 |
| Application Filed: | November 15, 2011 |
| مستخلص: | Disclosed is a C2/m-structured cathode material for a lithium-ion battery. The cathode material includes a lithium transition metal oxide represented by a formula of: Li(LiwNixCoyMnz)O2, wherein w+x+y+z=1, 0.42≦z≦0.60, 0.30≦x+y≦0.55, any of w, x, and y is larger than 0, and the cathode material having a single-phase structure with a space group of C2/m. A lithium-ion battery containing the C2/m-structured cathode material is also disclosed. |
| Inventors: | Wu, Maw-Kuen (Taipei, TW); Huang, Tzu-Wen (Keelung, TW); Tang, Horng-Yi (Taichung, TW); Chang, Hua-Shu (New Taipei, TW); Chiu, Chui-Chang (Taoyuan County, TW); Yeh, Kuo-Wei (Taipei, TW); Chang, Chung-Chieh (Taichung, TW) |
| Assignees: | LICO Technology Corp. (New Taipei, TW), Academia Sinica (Taipei, TW) |
| Claim: | 1. A C2/m-structured cathode material for a lithium-ion battery, said cathode material comprising a lithium transition metal oxide represented by a formula of: Li(Li w Ni x Co y Mn z)O 2 , wherein w+x+y+z= 1, 0.02 ≦w≦ 0.20, 0.50 ≦z≦ 0.52, 0.30 ≦x+y≦ 0.48, any of w, x, and y is larger than 0, said cathode material having a single-phase structure with a space group of C2/m, and said lithium-ion battery has a discharge specific capacity not less than 193 mAh/g. |
| Claim: | 2. A lithium-ion battery comprising: an anode; a cathode; an electrolyte; and a separator separating said anode from said cathode; said cathode containing a C2/m-structured cathode material including a lithium transition metal oxide represented by a formula of: Li(Li w Ni x Co y Mn z)O 2 , wherein w+x+y+z= 1, 0.02 ≦w≦ 0.20, 0.50 ≦z≦ 0.52, 0.30 ≦x+y≦ 0.48, any of w, x, and y is larger than 0, said cathode material having a single-phase structure with a space group of C2/m, and said lithium-ion battery has a discharge specific capacity not less than 193 mAh/g. |
| Current U.S. Class: | 4292/313 |
| Patent References Cited: | 2003/0022063 January 2003 Paulsen et al. 2005/0019659 January 2005 Shiozaki et al. 2007/0122705 May 2007 Paulsen et al. 2010/0233550 September 2010 Yanagida et al. 2012-038564 February 2012 WO 2011/021686 February 2011 |
| Primary Examiner: | Douyette, Kenneth |
| Attorney, Agent or Firm: | Davidson, Berquist, Jackson & Gowdey L.L.P. |
| رقم الانضمام: | edspgr.08663848 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |