Controlled Ag-driven superior rate-capability of Li4Ti5O12 anodes for lithium rechargeable batteries

作     者：Jae-Geun Kim Dongqi Shi Min-Sik Park Goojin Jeong Yoon-Uk Heo Minsu Seo Young-Jun Kim Jung Ho Kim Shi Xue Dou 

作者机构：Institute for Superconducting and Electronic Materials University of Wollongong North Wollongong NSW2500 Australia Advanced Batteries Research Center Korea Electronics Technology Institute Seongnam 463-816 Republic of Korea Research Facility Center Graduate Institute of Ferrous Technology Pohang University of Science and Technology Pohang 790-784 Republic of Korea 

基　　金：supported by an Australian Research Council Discovery Project 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2013年第6卷第5期

页      码：365-372页

摘      要：The morphology and electronic structure of a Li4Ti5012 anode are known to determine its electrical and electrochemical properties in lithium rechargeable batteries. Ag-Li4Ti5012 nanofibers have been rationally designed and synthesized by an electrospinning technique to meet the requirements of one-dimensional （1D） morphology and superior electrical conductivity. Herein, we have found that the 1D Ag-Li4Ti5012 nanofibers show enhanced specific capacity, rate capability, and cycling stability compared to bare Li4Ti5012 nanofibers, due to the Ag nanoparticles （〈5 nm）, which are mainly distributed at interfaces between Li4Ti5O12 primary particles. This structural morphology gives rise to 20% higher rate capability than bare Li4Ti5O12 nanofibers by facilitating the charge transfer kinetics. Our findings provide an effective way to improve the electrochemical performance of Li4Ti5O12 anodes for lithium rechargeable batteries.

主 题 词：spinel Li4Ti5012 (LTO) electrospinning silver doping lithium rechargeablebatteries 1D nanostructure 

学科分类：081704[081704] 0808[工学-自动化类] 07[理学] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 070301[070301] 

核心收录：

D　O　I：10.1007/s12274-013-0313-y

馆 藏 号：203565739...