Preparation and electrochemical performance of ultra-thin reduced graphene oxide/lithium metal composite foils

MAO Er-yang; DU Jun-mou; DUAN Xiang-rui; WANG Ling-yue; WANG Xian-cheng; LI Guo-cheng; FU Lin; SUN Yong-ming

doi:10.1016/S1872-5805(23)60729-2

Volume 38 Issue 4

Aug. 2023

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Article Navigation > New Carbon Mater. > 2023 > 38(4): 754-764

MAO Er-yang, DU Jun-mou, DUAN Xiang-rui, WANG Ling-yue, WANG Xian-cheng, LI Guo-cheng, FU Lin, SUN Yong-ming. Preparation and electrochemical performance of ultra-thin reduced graphene oxide/lithium metal composite foils. New Carbon Mater., 2023, 38(4): 754-764. doi: 10.1016/S1872-5805(23)60729-2

Citation:

MAO Er-yang, DU Jun-mou, DUAN Xiang-rui, WANG Ling-yue, WANG Xian-cheng, LI Guo-cheng, FU Lin, SUN Yong-ming. Preparation and electrochemical performance of ultra-thin reduced graphene oxide/lithium metal composite foils. New Carbon Mater., 2023, 38(4): 754-764. doi: 10.1016/S1872-5805(23)60729-2

Citation:

MAO Er-yang, DU Jun-mou, DUAN Xiang-rui, WANG Ling-yue, WANG Xian-cheng, LI Guo-cheng, FU Lin, SUN Yong-ming. Preparation and electrochemical performance of ultra-thin reduced graphene oxide/lithium metal composite foils. New Carbon Mater., 2023, 38(4): 754-764. doi: 10.1016/S1872-5805(23)60729-2

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Preparation and electrochemical performance of ultra-thin reduced graphene oxide/lithium metal composite foils

doi: 10.1016/S1872-5805(23)60729-2

1.
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
2.
School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China

Funds: Natural Science Foundation of China (52272207) and Basic Research Expenses of Central Universities (2019YCXJJ014).

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Author Bio:
MAO Er-yang, Ph.D. E-mail: maoeryang@foxmail.com
Corresponding author: SUN Yong-ming, Professor. E-mail: yongmingsun@hust.edu.cn
Received Date: 2022-04-15
Rev Recd Date: 2022-07-15

Available Online: 2023-03-13

Publish Date: 2023-08-01

Abstract

Abstract

Ultra-thin (≤50 μm) lithium metal anodes (LMAs) are highly desirable for high energy density lithium metal batteries (LMBs). However, their fabrication is complicated and costly due to the sticky and brittle nature of metallic Li, and they have a worse cycling stability than their thick counterparts. We report the fabrication of ultra-thin reduced graphene oxide/Li metal (rGO/Li) composite foils with thicknesses ranging from 10 to 50 μm. During the fabrication, disordered rGO sheets and molten metallic Li were stirred at 200 ºC to produce micrometer-size rGO/Li particles, which were rolled to form an ultra-thin uniform composite foil. The rGO sheets were randomly distributed in the composite to form a three-dimensional network, which is different from the laminated rGO structure previously reported, and supported stable Li plating/stripping behavior. As expected, a superior electrochemical performance was achieved using this composite sheet for the anode. A 50 μm-thick rGO/Li composite foil electrode showed stable cycling for > 1 600 h at 1 mA cm⁻² and 1 mAh cm⁻² in symmetrical cells in an ether-based electrolyte. A full cell consisting of a 50 μm-thick rGO/Li composite foil anode and a sulfurized polyacrylonitrile cathode had a high capacity retention of 675 mAh g⁻¹ after 220 cycles at 0.2 C.
- Lithium metal batteries,
- Lithium metal anode,
- Ultra-thin,
- Reduced graphene oxide,
- Disordered structure.

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References(27)

References

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