Cobalt Sulfide Nanosheet/Graphene/Carbon Nanotube Nanocomposites as Flexible Electrodes for Hydrogen Evolution1. (8th October 2014)

• Record Type: Journal Article
• Authors: Peng, Shengjie; Li, Linlin; Han, Xiaopeng; Sun, Wenping; Srinivasan, Madhavi; Mhaisalkar, Subodh G.; Cheng, Fangyi; Yan, Qingyu; Chen, Jun; Ramakrishna, Seeram
• Is Part Of: Angewandte Chemie. Volume 126:Number 46(2014)
• Page Start: 12802
• Page End: 12807
• Publication Date: 2014-10-08
• Subjects: Cobaltsulfid -- Flexible Elektroden -- Graphen -- Hybridkomposite -- Wasserstoffentwicklung; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201408876
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Flexible three‐dimensional (3D) nanoarchitectures have received tremendous interest recently because of their potential applications in wearable electronics, roll‐up displays, and other devices. The design and fabrication of a flexible and robust electrode based on cobalt sulfide/reduced graphene oxide/carbon nanotube (CoS2 /RGO‐CNT) nanocomposites are reported. An efficient hydrothermal process combined with vacuum filtration was used to synthesize such composite architecture, which was then embedded in a porous CNT network. This conductive and robust film is evaluated as electrocatalyst for the hydrogen evolution reaction. The synergistic effect of CoS2, graphene, and CNTs leads to unique CoS2 /RGO‐CNT nanoarchitectures, the HER activity of which is among the highest for non‐noble metal electrocatalysts, showing 10 mA cm −2 current density at about 142 mV overpotentials and a high electrochemical stability.