Volume 8, Issue 1 1900694
Full Paper

Optimizing the Crystallite Structure of Lignin-Based Nanospheres by Resinification for High-Performance Sodium-Ion Battery Anodes

Yang Zhang

Yang Zhang

Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 P. R. China

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Youyu Zhu

Youyu Zhu

Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 P. R. China

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Jizong Zhang

Jizong Zhang

Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 P. R. China

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Shuai Sun

Shuai Sun

Department of Chemical Engineering, Chengde Petroleum College, Chengde, 067000 P. R. China

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Chengyang Wang

Corresponding Author

Chengyang Wang

Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 P. R. China

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Mingming Chen

Mingming Chen

Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 P. R. China

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Jingxuan Zeng

Jingxuan Zeng

Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 P. R. China

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First published: 11 September 2019
Citations: 11

Abstract

Sodium-ion batteries are expected to be an alternative to lithium-ion batteries because of the inexpensive raw materials. However, the anode materials still face problems of low capacity and initial coulomb efficiency, even for hard carbons that are expected to have commercial applications. Herein, a resin nanosphere derived from lignin through double solvent evaporation and resinification is reported. Benefiting from the phenol–formaldehyde condensation to form linear polymers, the samples possess a large microcrystalline size, moderate interlayer distance, and defect sites in the turbostratic structure, which enhance the sodium-storage capacity. The carbonized lignin-based resin spheres (CLRSs) exhibit promising electrochemical performance with a comparable reversible capacity of 347 mAh g−1 and high initial columbic efficiency (ICE) of 74%. Furthermore, the sodium-storage mechanism for the obtained samples is also investigated by analyzing the relationship between the structure optimization and electrochemical performance.

Conflict of Interest

The authors declare no conflict of interest.

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