Synthesis of Robust Silicon Nanoparticles@Void@Graphitic Carbon Spheres for High-Performance Lithium-Ion-Battery Anodes

Ma Xiaomei; Gao Yujie; Chen Min; Wu Limin

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Synthesis of Robust Silicon Nanoparticles@Void@Graphitic Carbon Spheres for High-Performance Lithium-Ion-Battery Anodes

机译：用于高性能锂离子电池阳极的鲁棒硅纳米颗粒的合成 - Void @石墨碳球

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摘要

Silicon is known to be a promising candidate anode material for lithium-ion batteries because of its ultrahigh capacity; however, its volume expansion/shrinkage during lithiation/delithiation reactions represent the biggest challenge in practical applications. In this paper, we successfully design and synthesize a new type of robust silicon nanoparticles@void@graphitic carbon spheres (Si@void@C) material to buffer the silicon volume changes in the cyclic lithiation/delithiation process. The as-obtained Si@void@C nanocomposite spheres with well-dispersed silicon nanoparticles, efficient void spaces, and graphitic carbon shells can endow this nanocomposite anode with the robustness to solve the volume expansion/shrinkage issue. As demonstrated by coin battery performances, the Si@void@C nanocomposite sphere-based anode exhibits a specific capacity retention of 1565 and 1260 mAhg(-1) at C/5 and C/2 (1C=4200 mAg(-1)), respectively, after 1000 cycles of deep charge/discharge processes (voltage between 0.01 and 2.7 V versus Li/Li+). It provides a promising anode for a safe and high-performance Si-based materials in high-performance lithium-ion batteries.

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来源
《ChemElectroChem》 |2017年第6期|共7页
作者
Ma Xiaomei; Gao Yujie; Chen Min; Wu Limin;
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作者单位

Fudan Univ Dept Mat Sci Shanghai 200433 Peoples R China;

Fudan Univ Dept Mat Sci Shanghai 200433 Peoples R China;

Fudan Univ Dept Mat Sci Shanghai 200433 Peoples R China;

Fudan Univ Dept Mat Sci Shanghai 200433 Peoples R China;

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正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
关键词
silicon nanoparticles; graphitic carbon spheres; composite hollow spheres; anode materials; lithium-ion batteries;

机译：硅纳米粒子;石墨碳球;复合空心球;阳极材料;锂离子电池;

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2. Robust 3D network architectures of MnO nanoparticles bridged by ultrathin graphitic carbon for high-performance lithium-ion battery anodes [J] . 纳米研究：英文版 . 2018,第002期
3. Robust 3D network architectures of MnO nanoparticles bridged by ultrathin graphitic carbon for high-performance lithium-ion battery anodes [J] . Jingchun Jia, Xiang Hu, Zhenhai Wen 纳米研究（英文版） . 2018,第002期
4. Synthesis of Robust Silicon Nanoparticles@Void@Graphitic Carbon Spheres for High-Performance Lithium-Ion-Battery Anodes [J] . Ma Xiaomei, Gao Yujie, Chen Min, ChemElectroChem . 2017,第6期

机译：用于高性能锂离子电池阳极的鲁棒硅纳米颗粒的合成纯硅纳米粒子
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6. Boron-Doped Spherical Hollow-Porous Silicon Local Lattice Expansion toward a High-Performance Lithium-Ion-Battery Anode [J] . Ren Yongpeng, Zhou Xiangyang, Tang Jingjing, Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2019,第7期

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8. Study of Silicon Nitrate and Tin Dioxide carbon nanotube composite as lithium-ion battery anode, gas sensor and the self-assembly of carbon nanotubes on copper substrates. [D] . Hernandez-Lugo, Dionne M. 2014

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机译：基于硅涂层垂直排列碳纳米纤维核壳异质结构的高性能锂离子电池正极。

Synthesis of Robust Silicon Nanoparticles@Void@Graphitic Carbon Spheres for High-Performance Lithium-Ion-Battery Anodes

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