Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7724834 | Journal of Power Sources | 2018 | 8 Pages |
Abstract
TiO2-B has received increasing interest as a possible anode for lithium-ion batteries, but its properties are restricted by the intrinsically low electronic conductivity. Herein, we first demonstrate that phosphorus doping can be an efficient approach to boost the pseudocapacitive properties of TiO2-B nanowire arrays. The phosphorus doping not only promotes electronic conductivity of TiO2-B nanowire arrays by modifying their electronic structure, but also significantly enhances the electrochemical surface reactivity. Density functional theory calculations further reveal that the phosphorus doping could improve the surface lithium affinity of TiO2-B nanowire arrays. Consequently the phosphorus-doped TiO2-B nanowire arrays simultaneously exhibit high reversible capacity (350.9â¯mAh gâ1), remarkable rate capability (142.6â¯mAh gâ1â¯at 30â¯C), and impressive cyclability (approximately 80% capacity retention efficiency over 3000 continuous cycles at 10â¯C), holding promise in high-energy and high-power lithium-ion batteries application.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Minglei Cao, Leiming Tao, Xiaowei Lv, Yi Bu, Man Li, Hong Yin, Mingqiang Zhu, Zhicheng Zhong, Yan Shen, Mingkui Wang,