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Cobalt doping of FePS3 promotes intrinsic active sites for the efficient hydrogen evolution reaction.
Nanoscale ( IF 5.8 ) Pub Date : 2020-06-24 , DOI: 10.1039/d0nr03819a Shuang Wang 1 , Beibei Xiao 2 , Shijie Shen 1 , Kai Song 1 , Zhiping Lin 1 , Zongpeng Wang 1 , Yuchao Chen 1 , Wenwu Zhong 1
Nanoscale ( IF 5.8 ) Pub Date : 2020-06-24 , DOI: 10.1039/d0nr03819a Shuang Wang 1 , Beibei Xiao 2 , Shijie Shen 1 , Kai Song 1 , Zhiping Lin 1 , Zongpeng Wang 1 , Yuchao Chen 1 , Wenwu Zhong 1
Affiliation
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Exploring Earth-abundant electrocatalysts to achieve the efficient hydrogen evolution reaction (HER) is important for the development of clean and renewable hydrogen energy. Herein, we focus on a representative transition metal phosphosulfide electrocatalyst FePS3. Enlightened by our theoretical calculations that Co dopants improve H affinity on P sites and electrical conductivity, we prepared a series of Fe1−xCoxPS3 (x = 0, 0.05, 0.1, 0.15, 0.2, 0.25) compounds and characterized them by XRD, ICP, XPS, Raman, SEM, TEM, EDS, and resistivity and electrochemical measurement. It is found that the overpotential can be reduced by 166 mV, and the Tafel slope drops from 170 mV dec−1 to 80 mV dec−1. This work provides new insights to optimize the electrocatalytic hydrogen evolution activity of related transition metal phosphosulfides.
中文翻译：
FePS3的钴掺杂促进了内在的活性位点，以进行有效的氢释放反应。
探索富含地球的电催化剂以实现有效的氢释放反应（HER）对于开发清洁和可再生氢能源非常重要。在此，我们集中于代表性的过渡金属磷硫化物电催化剂FePS 3。通过理论计算的启发，Co掺杂剂改善了P位上的H亲和力和电导率，我们制备了一系列Fe 1- x Co x PS 3（x = 0，0.05，0.1，0.15，0.2，0.25）化合物并对其进行了表征XRD，ICP，XPS，拉曼，SEM，TEM，EDS以及电阻率和电化学测量。发现过电势可以降低166 mV，Tafel斜率从170 mV dec -1下降至80 mV dec -1。这项工作提供了新的见解，以优化相关过渡金属磷硫化物的电催化放氢活性。
更新日期：2020-07-16
中文翻译：
FePS3的钴掺杂促进了内在的活性位点，以进行有效的氢释放反应。
探索富含地球的电催化剂以实现有效的氢释放反应（HER）对于开发清洁和可再生氢能源非常重要。在此，我们集中于代表性的过渡金属磷硫化物电催化剂FePS 3。通过理论计算的启发，Co掺杂剂改善了P位上的H亲和力和电导率，我们制备了一系列Fe 1- x Co x PS 3（x = 0，0.05，0.1，0.15，0.2，0.25）化合物并对其进行了表征XRD，ICP，XPS，拉曼，SEM，TEM，EDS以及电阻率和电化学测量。发现过电势可以降低166 mV，Tafel斜率从170 mV dec -1下降至80 mV dec -1。这项工作提供了新的见解，以优化相关过渡金属磷硫化物的电催化放氢活性。
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