Hierarchically Ordered Porous CoOOH Thin‐Film Electrodes for High‐Performance Supercapacitors. Issue 4 (8th January 2015)

• Record Type: Journal Article
• Authors: Dhawale, Dattatray S.; Kim, Sehwan; Park, Dae‐Hwan; Choy, Jin‐Ho; Al‐deyab, Salem S.; Ariga, Katsuhiko; Kim, Eunkyoung; Vinu, Ajayan
• Is Part Of: ChemElectroChem. Volume 2:Issue 4(2015)
• Page Start: 497
• Page End: 502
• Publication Date: 2015-01-08
• Subjects: Electrochemistry -- Periodicals; 541.37
• DOI: 10.1002/celc.201402365
• Languages: English
• ISSNs: 2196-0216

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>We report a simple, cost‐effective, and potentially scalable approach for the fabricating hierarchically porous CoOOH thin‐film supercapacitors by combining a soft‐templating and a chemical‐bath deposition (CBD) method. The prepared electrode materials exhibit uniform morphology and highly ordered macropores, achieving a maximum specific capacitance of 387 F g⁻¹ at a current density of 1 mA cm⁻², with a high energy of 19 Wh kg⁻¹ and power density of 1713 W kg⁻¹. In addition, the porous CoOOH electrodes show good stability with a cycling efficiency &gt;90 % after 5000 charge–discharge cycles, which could lead to the generation of novel energy‐storage devices with better efficiencies.</p> </abstract>