DataVXACS Applied Energy MaterialsPaper
journal article·2021-04-26

An Anode Material for Lithium Storage: Si@N,S-Doped Carbon Synthesized via In Situ Self-Polymerization

Qiao He, Qingyun Wu, Xuxu Wang, Shuting Fu, Senchuan Huang, Shengfu Tong, Yangfei Cao, Zheng Liu, Mingmei Wu

ACS Applied Energy Materials· Volume 4· Issue 4
Publisher page
Source abstract

Abstract

Silicon is one of the most promising candidates for anode materials for next-generation lithium-ion batteries due to its high theoretical capacity. However, the catastrophic volume change upon lithiation/delithiation and the subsequent pulverization result in poor electrochemical performance and hinder its applications. To address this issue, a Si@N,S-doped carbon core–shell structure (Si@NSC) is proposed in this work. The composites are prepared by in situ polymerization and pyrolysis. The as-prepared Si@NSC electrode exhibits a stable capacity of 1720 mAh g–1 at 0.3 A g–1 after 550 cycles with a capacity retention of 90.2%. Compared with commercial silicon and a mixture of Si and C, Si@NSC demonstrates high initial efficiency and superior cyclic stability owing to its unique structure and moderate Si/C ratio. The Si@NSC composites shed light on the application of Si-based anode materials for high-capacity lithium storage.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storagePolymersComposites

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China

School of Marine Sciences, Sun Yat-Sen University, Zhuhai 519082, P. R. China

School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China

School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong 529020, China

Jiangmen Advanced Battery Material Engineering and Technology Research Center, Jiangmen, Guangdong 529020, China

Funding

National Natural Science Foundation of China · Guangzhou Science and Technology Program for International Cooperation Projects · Guangdong Science and Technology Program for Industrial Applications

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