DataVXACS Applied Nano MaterialsPaper
journal article·2022-10-28

Cu3Si-Modified Silicon Nanoparticles Encapsulated within SiOx and Hollow Carbon for Lithium-Ion Battery Anodes

Xinhong Chen, Xueru Zhang, Jiewu Cui, Yong Zhang, Elena A. Baranova, Yan Wang, Xia Shu, Yongqiang Qin, Jiaqin Liu, Yucheng Wu

ACS Applied Nano Materials· Volume 5· Issue 10
Publisher page
Source abstract

Abstract

Silicon (Si), a promising anode material for lithium-ion batteries, usually suffers from low capacity retention and poor rate performance due to its huge volume change issue and low electronic conductivity. The synergistic effect brought by the composite of carbon, metal silicide, and silicon is proven to be an effective measure to enhance the performance of silicon-based anodes. Herein, Cu3Si-modified silicon nanoparticles (SiNPs) encapsulated within SiOx and hollow carbon shell (M-Si@H-C) are designed and constructed by an electroless deposition and pyrolysis process, which delivers high specific capacity (1150 mAh g–1 at 0.21 A g–1 and 450 mAh g–1 at 8.4 A g–1) and long cycling stability (86.3% capacity retention after 200 cycles at 1 A g–1). The nanostructure and formation mechanism of the M-Si@H-C is elucidated by employing X-ray diffraction and transmission electron microscopy techniques. The enhancement to the lithium storage performance of the nanostructure is clarified on the basis of the microstructure investigation and electrochemical determination.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterialsCompositesMaterials processing

OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Extraction and Separation Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei 230009, Anhui, China

Instrumental Analysis Center, Hefei University of Technology, Hefei 230009, Anhui, China

Department of Chemical and Biological Engineering, Centre for Catalysis Research and Innovation (CCRI), University of Ottawa, 161 Louis-Pasteur, Ottawa, ON K1N 6N5, Canada

Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei 230009, Anhui, China

Engineering Research Center of Advanced Composite Materials Design & Application of Anhui Province, Hefei 230009, Anhui, China

Funding

Central University Basic Research Fund of China · National Natural Science Foundation of China · Natural Science Foundation of Anhui Province · Higher Education Discipline Innovation Project · Anhui Provincial Key Research and Development Plan

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