Ionics

, Volume 23, Issue 11, pp 2981–2992 | Cite as

Roles of Al-doped ZnO (AZO) modification layer on improving electrochemical performance of LiNi1/3Co1/3Mn1/3O2 thin film cathode

  • Zhiqiang Hu
  • Zejun Deng
  • Qiuping Wei
  • Ting Zhao
  • Yijia Wang
  • Zhiming Yu
  • Li Ma
  • Kechao Zhou
Original Paper

Abstract

Al-doped ZnO (AZO) was sputtered on the surface of LiNi1/3Co1/3Mn1/3O2 (NCM) thin film electrode via radio frequency magnetron sputtering, which was demonstrated to be a useful approach to enhance electrochemical performance of thin film electrode. The structure and morphology of the prepared electrodes were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectrometer, and transmission electron microscopy techniques. The results clearly demonstrated that NCM thin film showed a strong (104) preferred orientation and AZO was uniformly covered on the surface of NCM electrode. After 200 cycles at 50 μA μm−1 cm−2, the NCM/AZO-60s electrode delivered highest discharge capacity (78.1 μAh μm−1 cm−2) compared with that of the NCM/AZO-120s electrode (62.4 μAh μm−1 cm−2) and the bare NCM electrode (22.3 μAh μm−1 cm−2). In addition, the rate capability of the NCM/AZO-60s electrode was superior to the NCM/AZO-120s and bare NCM electrodes. The improved electrochemical performance can be ascribed to the appropriate thickness of the AZO coating layer, which not only acted as HF scavenger to keep a stable electrode/electrolyte interface but also reduced the charge transfer resistance during cycling.

Keywords

Roles of Al-doped ZnO (AZO) modification layer LiNi1/3Co1/3Mn1/3O2 thin film cathode HF scavenger Electrode/electrolyte interface Performance improvement of thin film batteries 

Notes

Acknowledgments

We gratefully acknowledge the National Natural Science Foundation of China (No. 51301211 and No. 21271188) and the State Key Laboratory of Powder Metallurgy for financial support.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Zhiqiang Hu
    • 1
  • Zejun Deng
    • 1
  • Qiuping Wei
    • 1
    • 2
  • Ting Zhao
    • 1
  • Yijia Wang
    • 1
  • Zhiming Yu
    • 1
    • 2
  • Li Ma
    • 2
  • Kechao Zhou
    • 2
  1. 1.School of Materials Science and EngineeringCentral South UniversityChangshaPeople’s Republic of China
  2. 2.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaPeople’s Republic of China

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