Electrochemical reduction and capacitance of hybrid titanium dioxides—nanotube arrays and "nanograss". (20th August 2016)

• Record Type: Journal Article
• Authors: Du, Kang; Liu, Guohua; Li, Mengwei; Wu, Chenggen; Chen, Xuyuan; Wang, Kaiying
• Is Part Of: Electrochimica acta. Volume 210(2016)
• Page Start: 367
• Page End: 374
• Publication Date: 2016-08-20
• Subjects: hybrid surface morphologies -- TiO2 nanotubes -- electrochemical reduction -- supercapacitors; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.05.027
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: In this paper, we report enhanced electrochemical capacitance of well-aligned TiO2 nanotube arrays with "nanograss" synthesized by electrochemical anodization. The conductivity of hybrid materials is improved by electrochemical reduction method, exhibiting an outstanding specific capacitance of 14.3 mF cm −2, which is 14 times larger than pristine ones. The specific capacitance further increases up to 20.5 mF cm −2, which is 43.4% higher than reduced ones with selectively retention of "nanograss" by ultrasonic treatment. We expect that the electrochemical-reduction approach and controllable morphology modification offer a potential path for developing high-performance energy storage devices.