Enabling the Li+ Transport and Interfacial Stability of SiOx Anode: Rigid-Soft Coupling Multifunctional Cu/Sn Metal Sites

IF 16.8 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy Pub Date : 2025-04-08 DOI:10.1016/j.nanoen.2025.110988

Yueying Chen , Ao Zhong , Mianying Huang , Qianhong Huang , Xiaoming Lin , Chao Yang , Qiaobao Zhang

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引用次数: 0

Abstract

Silicon suboxide (SiO_x) is considered a promising anode material for high-energy density lithium-ion batteries (LIBs). However, SiO_x faces significant challenges in terms of rapid structural degradation and low conductivity. In this paper, a bimetallic organic framework (MOF) and 3-amino-propyl triethoxysilane (APTES) were used to in situ synthesize silicon suboxide (SiO_x) composites (SiO_x/Cu_ySn) decorated with highly dispersed multifunctional electrochemical inert metal site Cu and active metal site Sn. The complementary and synergistic effects of electrochemically inert metal Cu/active metal Sn play an important role in improving the electrochemical performance of SiO_x anodes. The rigid Cu can support the structural stability of SiO_x during lithiation/delithiation. At the same time, the active metal Sn is alloyed to supplement the additional capacity and improve the lithium storage. Cu/Sn not only promotes the activity of irreversible products, but also accelerates electron conduction and improves the lithium ion diffusion kinetics. Thanks to bifunctional metal sites, SiO_x/Cu_5.6Sn composite anodes achieve high capacity, exceptional rate performance, and satisfactory cycle stability. In addition, the full-battery LiFePO₄//SiO_x/Cu_5.6Sn has demonstrated its potential for practical applications. These findings are expected for the rational design of high-performance SiO_x lithium-ion battery anodes by utilizing the dual-functional structure of complementary and synergistic effects.

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来源期刊

Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

30.30

自引率

7.40%

发文量

1207

审稿时长

23 days

期刊介绍： Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.