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Journal of Colloid and Interface Science

Journal of Colloid and Interface Science

IF: 9.4
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A PEGylated deep eutectic solvent for “bubbling” synthesis of SnO2/SnS heterostructure for the stable lithium-ion storage

Published:6 December 2024 DOI: 10.1016/j.jcis.2024.12.014 PMID: 39657420
Zhiqiang Liu,?Hui Li,?Huan Yao,?Yi Zhuang,?Runbo Gao,?Zhiteng Wang,?Zhenhe Zhu,?Huixin Lan,?Zeheng Li,?Wenlong Cai

Abstract

Constructing heterostructures is an effective strategy for the synthesis of high-performance anode electrode materials for lithium-ion batteries (LIBs). In this study, a "bubbling" PEGylated deep eutectic solvent (DES) method is utilized to synthesize SnO2/SnS heterostructure nanodots anchored on carbon nanosheets (SnO2/SnS@CN). A comprehensive investigation of the physical and chemical processes during the "bubbling" reaction offers in-depth insights into the underlying mechanism of the PEGylated DES approach. The carbon nanosheet structure enhances the electrical conductivity between SnO2 particle units and, due to its excellent mechanical properties, significantly contributes to material stability. The nanodot configuration of the heterostructure further improves electron transfer and lithium-ion (Li+) migration within the SnO2 units. The SnO2/SnS@CN material exhibits outstanding Li+ storage performance, achieving a high capacity of 675.6?mA h/g at 1 A/g after 1000 cycles. These findings establish a theoretical foundation for preparing heterostructure anode materials using the "bubbling" PEGylated DES method.

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