Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (12): 2517-2522.doi: 10.3866/PKU.WHXB201706162

• ARTICLE • Previous Articles     Next Articles

AlN-Fe Nanocomposite Thin Film:A New Anode Material for Lithium-Ion Batteries

Xiao-Ye NIU,Xiao-Qin DU,Qin-Chao WANG,Xiao-Jing WU,Xin ZHANG,Yong-Ning ZHOU*()   

  • Received:2017-05-15 Published:2017-09-05
  • Contact: Yong-Ning ZHOU E-mail:ynzhou@fudan.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(51502039)

Abstract:

AlN-Fe nanocomposite thin films with different AlN-Fe ratio were prepared by pulsed laser deposition (PLD).They were investigated as new anode materials for lithium ion batteries for the first time.The AlN-Fe nanocomposite films with an AlN/Fe ratio of 2:1 show the best electrochemical performance.They exhibit a specific capacity of 510 mA·g-1 after 100 cycles at a rate of 500 mA·g-1.Further, the study of the electrochemical reaction mechanism of the AlN-Fe nanocomposite thin films with lithium reveals that AlN decomposes during the discharge process to form the LiAl alloy and Li3N.During recharge, a part of Li3N reacts with Fe to form Fe3N, and the rest reacts with Al to form AlN.In subsequent cycles, all of Fe3N, AlN, and Al react with Li reversibly, contributing to the reversible charge-discharge processes and to the superior electrochemical performance of AlN-Fe nanocomposite thin films.Thus, this study provides a new perspective to design advanced electrode materials for lithium-ion batteries.

Key words: Lithium-ion battery, Anode material, Aluminium nitride, Thin film, Pulsed laser Deposition

MSC2000: 

  • O646