A novel Fe2O3-decorated N-doped CNT porous composites derived from tubular polypyrrole with excellent rate capability and cycle stability as advanced supercapacitor anode materials

被引：49

作者：

Raj, Balasubramaniam Gnana Sundara ^{[1
]}

Ko, Tae Hoon ^{[1
,2
]}

Acharya, Jiwan ^{[1
]}

Seo, Min-Kang ^{[3
]}

Khil, Myung-Seob ^{[2
]}

Kim, Hak-Yong ^{[1
,2
]}

Kim, Byoung-Suhk ^{[1
,2
,4
]}

机构：

[1] Jeonbuk Natl Univ, Dept BIN Convergence Technol, 567 Baekje Daero, Jeonju Si 54896, Jeollabuk Do, South Korea

[2] Jeonbuk Natl Univ, Dept Organ Mat & Fiber Engn, 567 Baekje Daero, Jeonju Si 54896, Jeollabuk Do, South Korea

[3] Korea Inst Carbon Convergence Technol, Jeonju 54853, South Korea

[4] Univ Penn, Dept Chem & Biomol Engn, Philadelphia, PA 19104 USA

来源：

ELECTROCHIMICA ACTA | 2020年 / 334卷

基金：

新加坡国家研究基金会;

关键词：

Fe2O3/N-CNT composite; Specific capacitance; Rate capability; Asymmetric device; Energy density; ONE-POT SYNTHESIS; HIGH-PERFORMANCE; FACILE SYNTHESIS; ELECTRODE MATERIAL; CUCO2O4; NANOWIRES; CARBON NANOTUBES; FE2O3; GRAPHENE; NANOCOMPOSITE; NANOPARTICLES;

D O I：

10.1016/j.electacta.2020.135627

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

As an advanced anode materials for high-performance asymmetric supercapacitors, the N-doped carbon nanotube (N-CNT) derived from tubular polypyrrole nanotube is decorated with Fe2O3 to produce the mesoporous 3D Fe2O3/N-CNT frameworks. The crystal structures and morphologies of the obtained products are investigated by XRD and FE-SEM. The electrochemical performances are evaluated by cyclic voltammetry, galvanostatic charge-discharge and impedance studies. The obtained Fe2O3/N-CNT composite electrode delivers a maximum specific capacitance of 264 F g(-1) at 1 mA cm(-2), high rate capability with a capacitance retention of 79% at 10 mA cm(-2) and good cycling stability with 84% capacitance loss after 10000 cycles at 7 mA cm(-2). The asymmetric Fe2O3/N-CNT//CuCo2O4 nanowires device exhibits at a high energy density 22.8 Wh kg(-1) at the power density 216 W kg(-1) in 2 M KOH aqueous electrolyte. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：10

共 59 条

[1] Superior electrochemical activity of α-Fe2O3/rGO nanocomposite for advance energy storage devices [J].