Improving the Electrochemical Performance of Hybrid Supercapacitor using Well-organized Urchin-like TiO2 and Activated Carbon

被引：34

作者：

Choi, Hyeong-Jong ^{[1
]}

Kim, Jin Hyeon ^{[1
]}

Kim, Hong-Ki ^{[1
]}

Lee, Seung-Hwan ^{[2
]}

Lee, Young-Hie ^{[1
]}

机构：

[1] Kwangwoon Univ, Dept Elect Mat Engn, Seoul, South Korea

[2] Univ Maryland, Ctr Adv Life Cycle Engn, Room 1103,Bldg 89, College Pk, MD 20742 USA

来源：

ELECTROCHIMICA ACTA | 2016年 / 208卷

基金：

新加坡国家研究基金会;

关键词：

Cylindrical Hybrid Supercapacitor; Electrochemical Performance; TiO2; Negative electrode; Activated Carbon; Urchin; ANODE MATERIAL; ELECTRODES; RUTILE; NANOSTRUCTURES; LI4TI5O12; NANOCRYSTALS; FABRICATION; H2TI12O25; GROWTH;

D O I：

10.1016/j.electacta.2016.05.039

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

TiO2 of various morphologies was synthesized by a hydrothermal method. Among them, urchin-like TiO2 exhibited the largest BET [Brunauer-Emmett-Teller] specific surface area. In this paper, the full-cell was fabricated using Urchin-like TiO2 as negative electrode and the activated carbon as positive electrode and measured electrochemical properties for cell balancing of cylindrical hybrid supercapacitors. The hybrid supercapacitor using urchin-like TiO2 with a large specific surface area had a discharge-specific capacitance of 61.1 Fg(-1) and excellent cycle life. Also, the hybrid supercapacitor with an urchin-like TiO2 negative electrode showed a maximum power density of 12224.356 W kg(-1) at an energy density of 10.134 Wh kg(-1) and maximum energy density of 50.648 Wh kg(-1) at a power density of 194.412 W kg(-1). Thus, urchin-like TiO2 showed potential as a material for the negative electrode of hybrid supercapacitors. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：202 / 210

页数：9

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