Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6605011 | Electrochimica Acta | 2018 | 22 Pages |
Abstract
A new structured hollow carbon spheres with an open pore (HCSO) were synthesized by introducing a pore-forming agent PEG. Unlike the conventional hollow particles, the void space is fully utilized due to the presence of the open pore. As a proof-of-concept, MnO2 nanosheets are in-situ grown on both the outer shell and the inner cavity of HCSO forming sandwich structure via a facile redox method, named MnO2@HCSO composite. Meanwhile, the distance for lithium ion diffusion greatly reduces. When tested as an anode material for lithium ion batteries, MnO2@HCSO composite exhibits increased performance compared to MnO2/HCS composites which use traditional closed HCS as carbon matrix. It can still deliver a specific capacity of 398Â mAh gâ1 based on the whole mass of composite even when the current density was increased to 5Â AÂ gâ1. This special designed structure would be extended to different fields, such as sensors and catalyst.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Jun Zang, Jianchuan Ye, Hang Qian, Yu Lin, Xiangwu Zhang, Mingsen Zheng, Quanfeng Dong,