Volume 19, Issue 48 2304290
Research Article

Two Birds with One Stone: Micro/Nanostructured SiOxCy Composites for Stable Li-Ion and Li Metal Anodes

Shangze Fan

Shangze Fan

School of Science, Hebei University of Science and Technology, Shijiazhuang, 050000 China

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Shiqiang Cui

Corresponding Author

Shiqiang Cui

School of Science, Hebei University of Science and Technology, Shijiazhuang, 050000 China

Hebei Provincial Key Laboratory of Photoelectric Control on Surface and Interface, Hebei University of Science and Technology, Shijiazhuang, 050000 China

E-mail: [email protected]; [email protected]; [email protected]

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Jiangjiang Zhang

Jiangjiang Zhang

School of Science, Hebei University of Science and Technology, Shijiazhuang, 050000 China

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Jinsheng Rong

Jinsheng Rong

School of Science, Hebei University of Science and Technology, Shijiazhuang, 050000 China

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Wenxin Wang

Wenxin Wang

School of Science, Hebei University of Science and Technology, Shijiazhuang, 050000 China

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Xuteng Xing

Corresponding Author

Xuteng Xing

School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Yaran Liu

Yaran Liu

School of Science, Hebei University of Science and Technology, Shijiazhuang, 050000 China

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Wenwen Ma

Wenwen Ma

School of Science, Hebei University of Science and Technology, Shijiazhuang, 050000 China

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Jing-Tai Zhao

Corresponding Author

Jing-Tai Zhao

School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004 China

Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 31 July 2023
Citations: 5

Abstract

Developing stable silicon-based and lithium metal anodes still faces many challenges. Designing new highly practical silicon-based anodes with low-volume expansion and high electrical conductivity, and inhibiting lithium dendrite growth are avenues for developing silicon-based and lithium metal anodes, respectively. In this study, SiOxCy microtubes are synthesized using a chemical vapor deposition method. As Li-ion battery anodes, the as-prepared SiOxCy not only combines the advantages of nanomaterials and the practical properties of micromaterials, but also exhibits high initial Coulombic efficiency (80.3%), low volume fluctuations (20.4%), and high cyclability (98% capacity retention after 1000 cycles). Furthermore, SiOxCy, as a lithium deposition substrate, can effectively promote the uniform deposition of metallic lithium. As a result, low nucleation overpotential (only 6.0 mV) and high Coulombic efficiency (≈98.9% after 650 cycles, 1.0 mA cm−2 and 1.0 mAh cm−2) are obtained on half cells, as well as small voltage hysteresis (only 9.5 mV, at 1.0 mA cm−2) on symmetric cells based on SiOxCy. Full batteries based on both SiOxCy and SiOxCy@Li anodes demonstrate great practicality. This work provides a new perspective for the simultaneous development of practical SiOxCy and dendrite-free lithium metal anodes.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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