Coaxial silver nanowire network core molybdenum oxide shell supercapacitor electrodes
By Recep Yuksel and Sahin Coskun and Husnu Emrah Unalan
Published in Electrochimica Acta
2016
Abstract
We present a new hybrid material composed of molybdenum (IV) oxide (MoO2) shell on highly conducting silver nanowire (Ag NW) core in the network form for the realization of coaxial Ag NW/MoO2 nanocomposite supercapacitor electrodes. Ag \NWs\ were simply spray coated onto glass substrates to form conductive networks and conformal MoO2 layer was electrodeposited onto the Ag \NW\ network to create binder-free coaxial supercapacitor electrodes. Combination of Ag \NWs\ and pseudocapacitive MoO2 generated an enhanced electrochemical energy storage capacity and a specific capacitance of 500.7 F/g was obtained at a current density of 0.25 A/g. Fabricated supercapacitor electrodes showed excellent capacity retention after 5000 cycles. The methods and the design investigated herein open a wide range of opportunities for nanowire based coaxial supercapacitors.