DOAJ Open Access 2020

rGO-Co-MoS2 Composite as Highly Active Electrocatalysts for Hydrogen Evolution Reaction

Guang Zhao Shun Wang Gaoliang Zhou Shengjie Sun Zhengyu Yang +11 lainnya

Abstrak

MoS2, Co-MoS2 and rGO-Co-MoS2 were synthesized successfully by a simple hydrothermal method. microstructures and Raman spectra of the samples were investigated by X-ray diffraction analysis and Raman spectroscopy. The result indicate that the peaks at 14.4°, 33.0° and 58.4° may be assigned to (002), (100) and (110) plane of pure MoS2, respectively. The crystallinity of MoS2 may be restrained by cobalt doping. D band and G band of amorphous carbon can be seen in the rGO-Co-MoS2. XPS result indicated that the rGO-10-Co-MoS2 is mainly consisted of S, Mo, Co, C and O, respectively. The electrochemical performance test results show that rGO-10-Co-MoS2 presents the lowest overpotentials of 205 mV at a current density of 10 mA cm-2 and the smallest Tafel slope, indicating cobalt doping and rGO hybrid can improve electrocatalytic activity for HER. In addition, The sample also exhibit good electrocatalytic stability in the acid condition.

Topik & Kata Kunci

Industrial electrochemistry Physical and theoretical chemistry

Penulis (16)

Guang Zhao

Shun Wang

Gaoliang Zhou

Shengjie Sun

Zhengyu Yang

Jianguo Lv

Yuxuan Ma

Ying Wang

Changjuan Hu

Junjun Zhang

Jin Yang

Gang He

Miao Zhang

Min Zhao

Xiaoshuang Chen

Lei Yang

Format Sitasi

APA MLA BibTeX

Zhao, G., Wang, S., Zhou, G., Sun, S., Yang, Z., Lv, J. et al. (2020). rGO-Co-MoS2 Composite as Highly Active Electrocatalysts for Hydrogen Evolution Reaction. https://doi.org/10.20964/2020.11.29

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Informasi Jurnal

Tahun Terbit: 2020
Sumber Database: DOAJ
DOI: 10.20964/2020.11.29
Akses: Open Access ✓