Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5146107 | International Journal of Hydrogen Energy | 2017 | 9 Pages |
Abstract
The research and developments of porous, highly active non-noble metal cathode materials are the current hot spots. In our work, ZIF-9 (Zeolitic imidazolate framework-9) as a cobalt source provide porous structure, we have sulfurized the ZIF-9 into CoS2 by a simple hydrothermal method. Ultimately, the porous CoS2/RGO cathode material was obtained. Through a series of characterization analyses (powder X-ray diffraction, X-ray photoelectron spectroscopy), it is confirmed that the CoS2/RGO composite was successfully formed. Furthermore, electrochemical tests demonstrated that the pursued catalyst exhibited remarkable hydrogen evolution reaction (HER) activities with a favorable overpotential (only 180Â mV for 10Â mAÂ cmâ2 vs reversible hydrogen electrode), a low Tafel slopes (75Â mVÂ decadeâ1) and high stability in acidic condition (more than 18Â h).
Related Topics
Physical Sciences and Engineering
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Electrochemistry
Authors
Yuanyuan Yang, Feng Li, Wenzhu Li, Wenbing Gao, He Wen, Jing Li, Yiping Hu, Yutong Luo, Rong Li,