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Low-cost high-performance solid-state asymmetric supercapacitors based on MnO2 nanowires and Fe2O3 nanotubes.
Peihua Yang
1 ,
Yong Ding ,
Ziyin Lin ,
Zhongwei Chen ,
Yuzhi Li ,
Pengfei Qiang ,
Masood Ebrahimi ,
Wenjie Mai ,
Ching Ping Wong ,
Zhong Lin Wang
Feb 12 2014
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Abstract
A low-cost high-performance solid-state flexible asymmetric supercapacitor (ASC) with α-MnO2 nanowires and amorphous Fe2O3 nanotubes grown on flexible carbon fabric is first designed and fabricated. The assembled novel flexible ASC device with an extended operating voltage window of 1.6 V exhibits excellent performance such as a high energy density of 0.55 mWh/cm(3) and good rate capability. The ASC devices can find numerous applications as effective power sources, such as powering color-switchable sun glasses and smart windows.