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Ge Nanoparticles in MXene Sheets: One-step Synthesis and Highly Improved Electrochemical Property in Lithium-ion Batteries

GUO Si-Lin1,2 KANG Shuai1,2 LU Wen-Qiang1,2

(1.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China 400714)
(2.University of Chinese Academy of Sciences, Chongqing, China 400714)

【Abstract】Ge nanoparticles were synthesized uniformly on MXene sheets via a one-step chemical solution method. The morphology of Ge/MXene was characterized by SEM and TEM. The formation process and optimized synthesis condition were analyzed carefully. Ge/MXene was used as anode for lithium-ion batteries. Their electrochemical performance, including capacity, rate and cycling stability, were tested and evaluated. Ge/MXene exhibited a greatly improved capacity of 1 200 mAh/g during the first hundred cycles at 0.2C with a loading of 1 mg/cm2. A capacity of 450 mAh/g at a higher loading of 2 mg/cm2 was obtained after 100 cycles. The excellence in electrochemistry was attributed to the high conductivity of MXene and its accommodable interlayer space.

【Keywords】 MXene; Ge nanoparticles; lithium-ion batteries; anode materials;


【Funds】 Youth Innovation Promotion Association of the Chinese Academy of Sciences (2019374) CCIGIT Young Innovators Awards (Y82A240H10) Chongqing Innovators Program for Returned Overseas Scholars (cx2018152)

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This Article


CN: 31-1363/TQ

Vol 35, No. 01, Pages 105-111

January 2020


Article Outline


  • 1 Experimental method
  • 2 Results and analysis
  • 3 Conclusion
  • References