Xu Ziqi, Liu Hui, Sun Jianhang, Zhou Weiying, Han Ce, Yang Guocheng, Shan Yuping
School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, People's Republic of China.
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's Republic of China.
Nanotechnology. 2022 Apr 22;33(28). doi: 10.1088/1361-6528/ac6086.
The potential of converting traditional biomass into low-cost HER catalysts has broad application prospects. In this paper, fungus is used as a carbon-based carrier. The bimetallic catalyst RuM-C (M = V, Mo, W, Zn, Cu) was synthesized under inert gas protection at high temperature. The order of electrocatalytic activity is RuV-C > RuZn-C > RuW-C > RuMo-C > Ru-C > RuCu-C > BF-C, which indicates that RuV-C exhibits excellent HER activity. Due to its irregular sheet structure, the specific surface area of the catalyst is increased. Impressively, it exhibits extremely high catalytic activity for HER in 1 M KOH due to favorable kinetics and excellent specific activity. Consequently, the prepared RuV-C exhibited excellent and stable HER activity compared Ru-C with a low overpotential of 65.78 mV at the current densities of 10 mA cmand Tafel slope of 45.26 mV dec. The potential only decreased by 88 mV after 24 h of continuous testing, which indicates that the catalyst has outstanding stability. This work will provide positive inspiration for the promotion of a new Ru-based biomass HER electrocatalyst.
将传统生物质转化为低成本析氢反应（HER）催化剂具有广阔的应用前景。本文以真菌为碳基载体，在惰性气体保护下高温合成了双金属催化剂RuM-C（M = V、Mo、W、Zn、Cu）。电催化活性顺序为RuV-C > RuZn-C > RuW-C > RuMo-C > Ru-C > RuCu-C > BF-C，这表明RuV-C表现出优异的析氢反应活性。由于其不规则的片状结构，催化剂的比表面积增大。令人印象深刻的是，由于良好的动力学和优异的比活性，它在1 M KOH中对析氢反应表现出极高的催化活性。因此，制备的RuV-C与Ru-C相比表现出优异且稳定的析氢反应活性，在电流密度为10 mA cm时过电位低至65.78 mV，塔菲尔斜率为45.26 mV dec。连续测试24小时后电位仅下降88 mV，这表明该催化剂具有出色的稳定性。这项工作将为新型Ru基生物质析氢反应电催化剂的推广提供积极的启发。
