Citation: JI Chong-Xing, ZHU De-Cheng, CHEN Yi-Xin, ZHU Xian-Yu, HUANG Ji-Chung, LI De-Cheng. Improved Electrochemical Properties of MgMn₂O₄ Through AZO-Coating via Sol-gel Method[J]. Chinese Journal of Inorganic Chemistry, ;2020, 36(5): 841-849. doi: 10.11862/CJIC.2020.096 shu

Improved Electrochemical Properties of MgMn₂O₄ Through AZO-Coating via Sol-gel Method

College of Energy, Soochow University, Suzhou, Jiangsu 215006, China

Corresponding author: LI De-Cheng, lidecheng@suda.edu.cn
Received Date: 12 November 2019
Revised Date: 24 February 2020

Figures(12)

The effects of AZO coating on its structure, morphology and electrochemical properties of the MgMn₂O₄ were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), charge and discharge tests and so on. It is shown that Al-doped ZnO (AZO) coating can effectively improve both the electronic conductivity and Li⁺ diffusion, consequently improved its rate capability. Moreover, AZO coating can also remain the continuous conductive network of the electrode, therefore improve its cyclic stability. The reversible capacity of 5%(w/w) AZO-coated MgMn₂O₄ was 590.3 mAh·g^-1 after 200 cycles, much higher than that of the bare MgMn₂O₄ (295.9 mAh·g^-1) and the reported value in literatures.
- lithium-ion battery,
- anode material,
- binary manganese-based spinel structure,
- sol-gel method,
- AZO
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Improved Electrochemical Properties of MgMn₂O₄ Through AZO-Coating via Sol-gel Method