Electrochemical Properties of Rutile TiO2 Nanorod Array in Lithium Hydroxide Solution

Yan Yu; Dan Sun; Haibo Wang; Haiyan Wang

doi:10.1186/s11671-016-1662-8

Electrochemical Properties of Rutile TiO₂ Nanorod Array in Lithium Hydroxide Solution

Nanoscale Res Lett. 2016 Dec;11(1):448. doi: 10.1186/s11671-016-1662-8. Epub 2016 Oct 6.

Authors

Yan Yu¹, Dan Sun², Haibo Wang³, Haiyan Wang⁴

Affiliations

¹ Suzhou Polytechnic Institute of Agriculture, Suzhou, Jiangsu, 215008, People's Republic of China.
² College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China.
³ Institute of Chemical Power Sources & College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu, 215006, People's Republic of China. wanghb@suda.edu.cn.
⁴ College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China. wanghy419@126.com.

Abstract

In this paper, rutile TiO₂ nanorod arrays are fabricated by a template-free method and proposed as a promising anode for aqueous Li-ion battery. The as-prepared TiO₂ nanorod arrays exhibited reversible Li-ion insertion/extraction ability in aqueous LiOH electrolyte. Moreover, galvanostatic charge/discharge test results demonstrated that the reversible capacity of TiO₂ nanorods could reach about 39.7 mC cm^-2, and 93.8 % of initial capacity was maintained after 600 cycles at a current density of 1 mA cm^-2 (=240 C rate), indicating excellent cycling stability and rate capability.

Keywords: Anode; Aqueous Li-ion batteries; Nanorod array; Rutile TiO2.