UMP Institutional Repository

One-Dimensional Assembly of Conductive and Capacitive Metal Oxide Electrodes for High-Performance Asymmetric Supercapacitors

Harilal, Midhun and Baiju, Vidyadharan and Izan Izwan, Misnon and Anilkumar, Gopinathan M. and Lowe, Adrian and Jamil, Ismail and M. M., Yusoff and Rajan, Jose (2017) One-Dimensional Assembly of Conductive and Capacitive Metal Oxide Electrodes for High-Performance Asymmetric Supercapacitors. ACS Applied Materials and Interfaces, 9 (12). pp. 10730-10742. ISSN 1944-8244 (print); 1944-8252 (online)

[img]
Preview
PDF
fist-2017-rajan-One-Dimensional Assembly1.pdf

Download (210kB) | Preview

Abstract

A one-dimensional morphology comprising nanograins of two metal oxides, one with higher electrical conductivity (CuO) and the other with higher charge storability (Co3O4), is developed by electrospinning technique. The CuO–Co3O4 nanocomposite nanowires thus formed show high specific capacitance, high rate capability, and high cycling stability compared to their single-component nanowire counterparts when used as a supercapacitor electrode. Practical symmetric (SSCs) and asymmetric (ASCs) supercapacitors are fabricated using commercial activated carbon, CuO, Co3O4, and CuO–Co3O4 composite nanowires, and their properties are compared. A high energy density of ∼44 Wh kg–1 at a power density of 14 kW kg–1 is achieved in CuO–Co3O4 ASCs employing aqueous alkaline electrolytes, enabling them to store high energy at a faster rate. The current methodology of hybrid nanowires of various functional materials could be applied to extend the performance limit of diverse electrical and electrochemical devices.

Item Type: Article
Uncontrolled Keywords: renewable energy, hybrid capacitors, energy-storage materials, electrochemical charge storage, nanocomposites, electrodes, pseudocapacitors, electrochemical double-layer capacitors
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Prof. Dr. Jose Rajan
Date Deposited: 13 Apr 2017 01:33
Last Modified: 26 Jul 2018 07:46
URI: http://umpir.ump.edu.my/id/eprint/17449
Download Statistic: View Download Statistics

Actions (login required)

View Item View Item