Wang Shuang, Xiao Beibei, Shen Shijie, Song Kai, Lin Zhiping, Wang Zongpeng, Chen Yuchao, Zhong Wenwu
School of Pharmaceutical and Materials Engineering, Taizhou University, Taizhou 318000, China.
School of Energy and Power Engineering Jiangsu University of Science and Technology Zhenjiang, Jiangsu, 212003, China.
Nanoscale. 2020 Jul 16;12(27):14459-14464. doi: 10.1039/d0nr03819a.
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.
探索地球上储量丰富的电催化剂以实现高效析氢反应（HER）对于清洁和可再生氢能的发展至关重要。在此，我们聚焦于一种具有代表性的过渡金属磷硫化物电催化剂FePS3。受我们的理论计算启发，即钴掺杂剂可提高磷位点上的氢亲和力和电导率，我们制备了一系列Fe1-xCoxPS3（x = 0、0.05、0.1、0.15、0.2、0.25）化合物，并通过XRD、ICP、XPS、拉曼光谱、SEM、TEM、EDS以及电阻率和电化学测量对其进行了表征。结果发现，过电位可降低166 mV，塔菲尔斜率从170 mV dec-1降至80 mV dec-1。这项工作为优化相关过渡金属磷硫化物的电催化析氢活性提供了新的见解。
