Please use this identifier to cite or link to this item:
Title: A high energy density asymmetric supercapacitor from nano-architectured Ni(OH) 2/Carbon nanotube electrodes
Authors: Tang, Z. 
Tang, C.-H.
Gong, H. 
Keywords: asymmetric supercapacitor
carbon nanotube
nichel hydroxide
Issue Date: 21-Mar-2012
Citation: Tang, Z., Tang, C.-H., Gong, H. (2012-03-21). A high energy density asymmetric supercapacitor from nano-architectured Ni(OH) 2/Carbon nanotube electrodes. Advanced Functional Materials 22 (6) : 1272-1278. ScholarBank@NUS Repository.
Abstract: The demand for advanced energy storage devices such as supercapacitors and lithium-ion batteries has been increasing to meet the application requirements of hybrid vehicles and renewable energy systems. A major limitation of state-of-art supercapacitors lies in their relatively low energy density compared with lithium batteries although they have superior power density and cycle life. Here, we report an additive-free, nano-architectured nickel hydroxide/carbon nanotube (Ni(OH) 2/CNT) electrode for high energy density supercapacitors prepared by a facile two-step fabrication method. This Ni(OH) 2/CNT electrode consists of a thick layer of conformable Ni(OH) 2 nano-flakes on CNT bundles directly grown on Ni foams (NFs) with a very high areal mass loading of 4.85 mg cm -2 for Ni(OH) 2. Our Ni(OH) 2/CNT/NF electrode demonstrates the highest specific capacitance of 3300 F g -1 and highest areal capacitance of 16 F cm -2, to the best of our knowledge. An asymmetric supercapacitor using the Ni(OH) 2/CNT/NF electrode as the anode assembled with an activated carbon (AC) cathode can achieve a high cell voltage of 1.8 V and an energy density up to 50.6 Wh/kg, over 10 times higher than that of traditional electrochemical double-layer capacitors (EDLCs). Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Source Title: Advanced Functional Materials
ISSN: 1616301X
DOI: 10.1002/adfm.201102796
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on May 22, 2022


checked on May 13, 2022

Page view(s)

checked on May 12, 2022

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.