College of Food Science and Technology, Bohai University, Jinzhou, 121013, China.
Discipline of Chemistry, University of Newcastle, Callaghan, NSW, 2308, Australia.
Angew Chem Int Ed Engl. 2019 Oct 7;58(41):14599-14604. doi: 10.1002/anie.201909326. Epub 2019 Sep 12.
To improve energy conversion efficiency, the development of active electrocatalysts with similar structural features to photosynthesis II systems (PS-II), which can efficiently catalyze the oxygen evolution reaction (OER), have received great research interest. Crystalline cobalt phosphate nanosheets are designed as an efficient OER catalyst in neutral media, showing outstanding performance that even outperforms the noble RuO benchmark. The correlation of experimental and computational results reveals that the active sites are the edge-sharing CoO structural motif, akin to the molecular geometry of PS-II. This unique structure can facilitate reaction intermediate adsorption and decrease the reaction energy barrier, thus improving the OER kinetics.
为了提高能量转换效率，开发具有与光合作用 II 系统（PS-II）相似结构特征的高效电催化剂，以促进析氧反应（OER），这引起了广泛的研究兴趣。本工作设计了具有结晶钴磷酸盐纳米片结构的电催化剂，在中性介质中表现出高效的 OER 催化活性，甚至优于贵金属 RuO2 的性能。实验和计算结果的相关性表明，活性中心是边缘共享的 CoO 结构基元，类似于 PS-II 的分子几何形状。这种独特的结构可以促进反应中间产物的吸附，并降低反应的能量势垒，从而提高 OER 的动力学性能。
