Rational design of the pea-pod structure of SiOx/C nanofibers as a high-performance anode for lithium ion batteries,Inorganic Chemistry Frontiers

当前位置： X-MOL 学术 › Inorg. Chem. Front. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Rational design of the pea-pod structure of SiOx/C nanofibers as a high-performance anode for lithium ion batteries
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-03-05 , DOI: 10.1039/d0qi00069h
Yuchao Zheng _{1,

2,

3,

4,

5} , Xiangzhong Kong _{1,

2,

3,

4,

5} , Ibrahim Usman _{1,

2,

3,

4,

5} , Xuefang Xie _{1,

2,

3,

4,

5} , Shuquan Liang _{1,

2,

3,

4,

5} , Guozhong Cao _{1,

2,

3,

4,

5} , Anqiang Pan _{1,

2,

3,

4,

5}

Affiliation

Silicon oxides (SiO_x) are regarded as one of the most potential anode materials for lithium-ion batteries with the advantages of a high theoretical capacity, low discharge platform (<0.5 V) and environmental friendliness. However, the low electronic conductivity and the degradation of the structure upon cycling have limited the electrochemical performance of SiO_x. In this work, a conductive carbon fiber network wrapped SiO_x/C composite has been fabricated via combined electrospinning and carbonization methods. Importantly, the loading of SiO_x in the composite can be adjusted by changing the addition amounts of organosilica-polymer nanospheres during the electrospinning process. When utilized as an anode material for LIBs, the novel SiO_x/C composite exhibited good cycling stability and rate capabilities. The superior electrochemical performance can be ascribed to the special carbonaceous conductive network structure, which guarantees enhanced overall ion and electron transportation and structural integrity. The present work offers insights into the rational design of silicon-based materials for advanced lithium ion batteries.

中文翻译：

SiOx / C纳米纤维豌豆荚结构作为锂离子电池高性能阳极的合理设计

氧化硅（SiO _x）被认为是锂离子电池最具潜力的负极材料之一，具有理论容量高，放电平台低（<0.5 V）和环境友好的优点。然而，低电导率和循环时结构的退化限制了SiO _x的电化学性能。在这项工作中，导电碳纤维网状包裹的SiO _x / C复合材料已经通过静电纺丝和碳化方法组合而成。重要的是，SiO _x的负载量可以通过在电纺丝过程中改变有机硅聚合物纳米球的添加量来调节复合材料中的有机硅含量。当用作LIB的阳极材料时，新型SiO _x / C复合材料表现出良好的循环稳定性和倍率性能。优异的电化学性能可归因于特殊的碳质导电网络结构，可确保增强的整体离子和电子传输以及结构完整性。本工作为高级锂离子电池的硅基材料的合理设计提供了见识。

更新日期：2020-04-24

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11