AUTHOR=Mei Jing , Han Jinlu , Wu Fujun , Pan Qichang , Zheng Fenghua , Jiang Juantao , Huang Youguo , Wang Hongqiang , Liu Kui , Li Qingyu TITLE=SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries JOURNAL=Frontiers in Chemistry VOLUME=10 YEAR=2023 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1105997 DOI=10.3389/fchem.2022.1105997 ISSN=2296-2646 ABSTRACT=

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.