Cobalt Sulfide Nanosheet/Graphene/Carbon Nanotube Nanocomposites as Flexible Electrodes for Hydrogen Evolution1. Issue 46 (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 international edition. Volume 53:Issue 46(2014)
• Page Start: 12594
• Page End: 12599
• Publication Date: 2014-10-08
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201408876
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>