title: One-Dimensional Assembly of Conductive and Capacitive Metal Oxide Electrodes for High-Performance Asymmetric Supercapacitors.
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-Co3O4nanocomposite 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-Co3O4composite nanowires, and their properties are compared. A high energy density of ∼44 Wh kg-1at a power density of 14 kW kg-1is achieved in CuO-Co3O4ASCs 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.
authors.affiliation: Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang , 26300 Kuantan, Malaysia.
authors.forename: Midhun
authors.initials: M
authors.lastname: Harilal
authors.affiliation: Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang , 26300 Kuantan, Malaysia.
authors.forename: Baiju
authors.initials: B
authors.lastname: Vidyadharan
authors.affiliation: Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang , 26300 Kuantan, Malaysia.
authors.forename: Izan Izwan
authors.initials: II
authors.lastname: Misnon
authors.affiliation: R&D Center, Noritake Company Ltd. , 300 Higashiyama, Miyoshi, Aichi 470-0293, Japan.
authors.forename: Gopinathan M
authors.initials: GM
authors.lastname: Anilkumar
authors.affiliation: Research School of Engineering, Australian National University , Canberra 0200, Australia.
authors.forename: Adrian
authors.initials: A
authors.lastname: Lowe
authors.affiliation: Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang , 26300 Kuantan, Malaysia.
authors.forename: Jamil
authors.initials: J
authors.lastname: Ismail
authors.affiliation: Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang , 26300 Kuantan, Malaysia.
authors.forename: Mashitah M
authors.initials: MM
authors.lastname: Yusoff
authors.affiliation: Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang , 26300 Kuantan, Malaysia.
authors.forename: Rajan
authors.identifier: http://orcid.org/0000-0003-4540-321X
authors.initials: R
authors.lastname: Jose
keywords: electrochemical charge storage; electrochemical double-layer capacitors; electrodes; energy-storage materials; hybrid capacitors; nanocomposites; pseudocapacitors; renewable energy