Chinese Journal of Magnetic Resonance ›› 1998, Vol. 15 ›› Issue (5): 427-430.

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7Li NMR STUDY OF Li+ MOTION IN ANODE MATERIALS OF BATTERY

Ren Hailan1, Yue Yong1, Chen Congju1, Ye Chaohui1, Yan Hongwei2   

  1. 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 4300710;
    2. Institute of Physics, The Chinese Academy of Sciences, Beijing 100080
  • Received:1998-04-20 Revised:1998-05-26 Published:1998-10-05 Online:2018-01-17

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Abstract: The motion of Li+ ions in anode materials of battery has been investigated by temperature varying 7Li solid-state NMR techniques.The results suggest that with the increase of experimental temperature, the 7Li NMR spectra of LiMn2O4 become narrowed, which indicate the increase of mobility of Li+, while those of LiCoO2 remain unchanged.The changes of T1 in LiMn2O4 and LiCoO2 show opposite tendency with the increase of temperature because their T1's locate on different sides of the utmost point of the T1-τc curve.

Key words: 7Li NMR, Battery materials, Ionic motion

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