SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

Frontiers in Chemistry

Chemistry

Jinlu Han¹  Qingyu Li¹  Juantao Jiang¹  Qichang Pan¹  Kui Liu¹  Youguo Huang¹  Fenghua Zheng¹  Fujun Wu¹  Hongqiang Wang¹  Jing Mei¹ 

[1] Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, China;Guangxi New Energy Ship Battery Engineering Technology Research Center, Guangxi Normal University, Guilin, China;

关键词: SNS;    N-doped carbon;    graphene oxide;    anode;    lithium-ion batteries;   

DOI  :  10.3389/fchem.2022.1105997

 received in 2022-11-23, accepted in 2022-12-16,  发布年份 2023

来源: Frontiers

【 摘 要 】

Tin (II) sulfide (SnS) has been regarded as an attractive anode material for lithium-ion batteries (LIBs) owing to its high theoretical capacity. However, sulfide undergoes significant volume change during lithiation/delithiation, leading to rapid capacity degradation, which severely hinders its further practical application in lithium-ion batteries. Here, we report a simple and effective method for the synthesis of SnS@C/G composites, where SnS@C nanoparticles are strongly coupled onto the graphene oxide nanosheets through dopamine-derived carbon species. In such a designed architecture, the SnS@C/G composites show various advantages including buffering the volume expansion of Sn, suppressing the coarsening of Sn, and dissolving Li2S during the cyclic lithiation/delithiation process by graphene oxide and N-doped carbon. As a result, the SnS@C/G composite exhibits outstanding rate performance as an anode material for lithium-ion batteries with a capacity of up to 434 mAh g−1 at a current density of 5.0 A g−1 and excellent cycle stability with a capacity retention of 839 mAh g−1 at 1.0 A g−1 after 450 cycles.

【 授权许可】

Unknown   
Copyright © 2023 Mei, Han, Wu, Pan, Zheng, Jiang, Huang, Wang, Liu and Li.