Binding SnO2 Nanoparticles with MoS2 Nanosheets Toward Highly Reversible and Cycle-Stable Lithium/Sodium Storage

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外文摘要：SnO2,with its high theoretical capacity,abundant resources,and environmental friendliness,is widely regarded as a potential anode material for lithium-ion batteries(LIBs).Nevertheless,the coarsening of the Sn nanoparticles impedes the reconversion back to SnO2,resulting in low coulombic efficiency and rapid capacity decay.In this study,we fabricated a heterostructure by combining SnO2 nanoparticles with MoS2 nanosheets via plasma-assisted milling.The heterostructure consists of in-situ exfoliated MoS2 nanosheets predominantly in 1 T phase,which tightly encase the SnO2 nanoparticles through strong bonding.This configuration effectively mitigates the volume change and particle aggregation upon cycling.Moreover,the strong affinity of Mo,which is the lithiation product of MoS2,toward Sn plays a pivotal role in inhibiting the coarsening of Sn nanograins,thus enhancing the reversibility of Sn to SnO2 upon cycling.Consequently,the SnO2/MoS2 heterostructure exhibits superb performance as an anode material for LIBs,demonstrating high capacity,rapid rate capability,and extended lifespan.Specifically,discharged/charged at a rate of 0.2 A g-1 for 300 cycles,it achieves a remarkable reversible capacity of 1173.4 mAh g-1·Even cycled at high rates of 1.0 and 5.0 A g-1 for 800 cycles,it still retains high reversible capacities of 1005.3 and 768.8 mAh g-1,respectively.Moreover,the heterostructure exhibits outstanding electrochemical performance in both full LIBs and sodium-ion batteries.

外文关键词：

1 T-MoS2heterostructurelithium-ion batteriesSn coarseningSnO2

作者：

Deliang Cheng、Wenbiao Zhang、Yi Tang、Qingsheng Gao、Renzong Hu、Lichun Yang、Min Zhu

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作者单位：

Institute of Advanced Materials,Jiangxi Normal University,Nanchang 330022,China

School of Materials Science and Engineering,Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials,South China University of Technology,Guangzhou 510641,China

College of Chemistry and Materials Science,Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications,Jinan University,Guangzhou 510632,China

Department of Chemistry,Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials,Fudan University,Shanghai 200433,China

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基金：

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaGuangdong Basic and Applied Basic Research FoundationJiangxi Provincial Natural Science Foundation

项目编号：

2018YFA02094022022YFB25020032023B151504001120212BAB214028

出版年：

2024

DOI：

10.1002/eem2.12682

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(4)