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Volume 13
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Article

Pyramid-Patterned Germanium Composite Film Anode for Rechargeable Lithium-Ion Batteries Prepared Using a One-Step Physical Method

by
Liyong Wang
1,†,
Mei Wang
1,
Liansheng Jiao
2,†,
Huiqi Wang
1,*,
Jinhua Yang
1,3,
Xiaozhong Dong
4,
Ting Bi
1,
Shengsheng Ji
1,
Lei Liu
1,
Shengliang Hu
1,
Chengmeng Chen
5,
Quangui Guo
5,* and
Zhanjun Liu
5,*
1
School of Energy and Power Engineering, North University of China, Taiyuan 030001, China
2
School of Chemistry and Chemical Engineering, Hebei Normal University for Nationalities, Chengde 067000, China
3
National Key Laboratory of Advanced Composites, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
4
Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan 030001, China
5
CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Coatings 2023, 13(3), 555; https://doi.org/10.3390/coatings13030555
Submission received: 18 November 2022 / Revised: 26 February 2023 / Accepted: 27 February 2023 / Published: 5 March 2023
(This article belongs to the Special Issue Advances in Novel Coatings)
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Abstract

Using a top-down magnetron sputtering technique with a high deposition-rate, a one-step method for preparing germanium (Ge) hybrid film is presented. At present, graphite film is used as a current collector because it is flexible, self lubricating, and possesses a stress–strain-relieving property. In order to further suppress the volume changes of the Ge, a multilayered electrically conductive nickel film is deposited between multilayered Ge films. The cells are cycled at a current density of 200 mA g−1. An initial discharge and charge capacity of 1180.7 and 949.3 mAh g−1 are achieved by the prepared integrated pyramid patterned Ge composite film anode, respectively. The average capacity was maintained at 580 mAh g−1 after 280 cycles. In the rate capability measurement, the Ge composite demonstrated a reversible capacity of 1163.1 mAh g−1. It is easily made using magnetron sputtering, which is widely accepted in the industry. A physical approach to increase pure Ge’s specific capacity and its cycle life for LIBs is demonstrated in this work.
Keywords: germanium; graphite film; lithium-ion battery; magnetron sputtering germanium; graphite film; lithium-ion battery; magnetron sputtering

Share and Cite

MDPI and ACS Style

Wang, L.; Wang, M.; Jiao, L.; Wang, H.; Yang, J.; Dong, X.; Bi, T.; Ji, S.; Liu, L.; Hu, S.; et al. Pyramid-Patterned Germanium Composite Film Anode for Rechargeable Lithium-Ion Batteries Prepared Using a One-Step Physical Method. Coatings 2023, 13, 555. https://doi.org/10.3390/coatings13030555

AMA Style

Wang L, Wang M, Jiao L, Wang H, Yang J, Dong X, Bi T, Ji S, Liu L, Hu S, et al. Pyramid-Patterned Germanium Composite Film Anode for Rechargeable Lithium-Ion Batteries Prepared Using a One-Step Physical Method. Coatings. 2023; 13(3):555. https://doi.org/10.3390/coatings13030555

Chicago/Turabian Style

Wang, Liyong, Mei Wang, Liansheng Jiao, Huiqi Wang, Jinhua Yang, Xiaozhong Dong, Ting Bi, Shengsheng Ji, Lei Liu, Shengliang Hu, and et al. 2023. "Pyramid-Patterned Germanium Composite Film Anode for Rechargeable Lithium-Ion Batteries Prepared Using a One-Step Physical Method" Coatings 13, no. 3: 555. https://doi.org/10.3390/coatings13030555

APA Style

Wang, L., Wang, M., Jiao, L., Wang, H., Yang, J., Dong, X., Bi, T., Ji, S., Liu, L., Hu, S., Chen, C., Guo, Q., & Liu, Z. (2023). Pyramid-Patterned Germanium Composite Film Anode for Rechargeable Lithium-Ion Batteries Prepared Using a One-Step Physical Method. Coatings, 13(3), 555. https://doi.org/10.3390/coatings13030555

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