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Synthesis and electrochemical properties of non-stoichiometric Li-Mn-spinel (Li1.02MxMn1.95O4-yFy) for lithium ion battery application

Journal Article


Abstract


  • Non-stoichiometric spinel compounds Li1.02MxMn1.95O4−yFy (M = Co, Y, and Ga) were prepared for the first time by the rheological phase reaction method. The Li1.02MxMn1.95O4−yFy samples were characterized by X-ray diffraction, while the particle size and shape of the Li1.02MxMn1.95O4−yFy were observed by scanning and transmission electron microscopy. The as-prepared samples were used as cathode materials in lithium-ion batteries, their electrochemical properties were tested, and the results showed that the non-stoichiometric spinels Li1.02MxMn1.95O4−yFy had better cycling performance than pure LiMn2O4. In addition, among the different non-stoichiometric spinel samples, the Li1.02Mn1.95Co0.02Y0.01Ga0.01O3.97F0.03 sample not only had higher charge/discharge capacity, but also showed the best cycling performance, as the loss of its capacity was only 7% after 100 cycles. The possible reasons for the outstanding electrical properties of Li1.02Mn1.95Co0.02Y0.01Ga0.01O3.97F0.03 are also discussed.

Authors


  •   Feng, Chuanqi (external author)
  •   Li, Hua (external author)
  •   Zhang, Chaofeng (external author)
  •   Guo, Zaiping
  •   Wu, Huimin (external author)
  •   Tang, Jie (external author)

Publication Date


  • 2012

Citation


  • Feng, C., Li, H., Zhang, C., Guo, Z., Wu, H. & Tang, J. (2012). Synthesis and electrochemical properties of non-stoichiometric Li-Mn-spinel (Li1.02MxMn1.95O4-yFy) for lithium ion battery application. Electrochimica Acta, 61 87-93.

Scopus Eid


  • 2-s2.0-84855318217

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5223

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 87

End Page


  • 93

Volume


  • 61

Place Of Publication


  • United Kingdom

Abstract


  • Non-stoichiometric spinel compounds Li1.02MxMn1.95O4−yFy (M = Co, Y, and Ga) were prepared for the first time by the rheological phase reaction method. The Li1.02MxMn1.95O4−yFy samples were characterized by X-ray diffraction, while the particle size and shape of the Li1.02MxMn1.95O4−yFy were observed by scanning and transmission electron microscopy. The as-prepared samples were used as cathode materials in lithium-ion batteries, their electrochemical properties were tested, and the results showed that the non-stoichiometric spinels Li1.02MxMn1.95O4−yFy had better cycling performance than pure LiMn2O4. In addition, among the different non-stoichiometric spinel samples, the Li1.02Mn1.95Co0.02Y0.01Ga0.01O3.97F0.03 sample not only had higher charge/discharge capacity, but also showed the best cycling performance, as the loss of its capacity was only 7% after 100 cycles. The possible reasons for the outstanding electrical properties of Li1.02Mn1.95Co0.02Y0.01Ga0.01O3.97F0.03 are also discussed.

Authors


  •   Feng, Chuanqi (external author)
  •   Li, Hua (external author)
  •   Zhang, Chaofeng (external author)
  •   Guo, Zaiping
  •   Wu, Huimin (external author)
  •   Tang, Jie (external author)

Publication Date


  • 2012

Citation


  • Feng, C., Li, H., Zhang, C., Guo, Z., Wu, H. & Tang, J. (2012). Synthesis and electrochemical properties of non-stoichiometric Li-Mn-spinel (Li1.02MxMn1.95O4-yFy) for lithium ion battery application. Electrochimica Acta, 61 87-93.

Scopus Eid


  • 2-s2.0-84855318217

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5223

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 87

End Page


  • 93

Volume


  • 61

Place Of Publication


  • United Kingdom