CoNi2S4 nanoparticles as highly efficient electrocatalysts for the hydrogen evolution reaction in alkaline media
CoNi2S4 nanoparticles as highly efficient electrocatalysts for the hydrogen evolution reaction in alkaline media
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DOI：
10.1016/j.ijhydene.2016.09.115
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发表时间：
2017-02
影响因子：
7.2
通讯作者：
Dezhi Wang;Xiangyong Zhang;Zijie Du;Zheyang Mo;Yefeng Wu;Qing Yang;Yi Zhang;Zhuangzhi Wu
中科院分区：
文献类型：
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作者：
Dezhi Wang;Xiangyong Zhang;Zijie Du;Zheyang Mo;Yefeng Wu;Qing Yang;Yi Zhang;Zhuangzhi Wu
开发高活性、稳定性好的无铂电催化剂用于析氢反应仍然是一个巨大的挑战。本文首次报道了一锅水热法制备的CoNi2S4纳米粒子在强碱性电解液中对HER的高效电催化作用，并系统地讨论了制备温度的影响。与其他非贵金属催化剂相比，所制备的催化剂表现出更好的HER活性，在220℃时得到的催化剂表现出最好的活性，最小的塔菲尔斜率为85 mV/−1，在1.0MKOH中具有良好的稳定性，是一种有希望取代铂基催化剂的候选催化剂。
The development of highly active non-Pt electrocatalysts with superior stability for the hydrogen evolution reaction (HER) remains a great challenge. Herein, we report CoNi2S4nanoparticles synthesized by a facile one-pot hydrothermal method as highly efficient electrocatalysts for the HER in strongly alkaline electrolyte for the first time, and the effect of preparation temperature was also discussed systematically. These as-prepared catalysts exhibited superior HER activity compared to other non-noble metal catalysts and the catalyst obtained at 220 °C showed the best activity with the smallest Tafel slope of 85 mV dec−1and good stability in 1.0 M KOH, making it a promising candidate to replace Pt-based catalysts.