Wang Fan, Pei Zhen, Xu Zhou, Qin Tengteng, Ouyang Xin, Li Dongyun, Hou Yang, Guo Xingzhong
State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China.
College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, China.
Adv Sci (Weinh). 2025 Jun;12(22):e2417521. doi: 10.1002/advs.202417521. Epub 2025 Mar 27.
Bifunctional electrocatalysts with high efficiency, stability, and distinguished performance have attracted more and more attention in the field of overall water splitting, while the composition and structure design are very essential for electrocatalysts with superb performance and low price. In this work, the heterostructure Mn-Co-Fe-P nanoarrays is in situ grown on nickel foam (NF) by simple hydrothermal method and phosphating method. The resultant Mn-Co-Fe-P catalyst has favorable electrocatalytic performance with the oxygen evolution reaction (OER) overpotential at 10 (100) mA cm of 192 (279) mV and the Tafel slope of 43.75 mV dec, the hydrogen evolution reaction (HER) overpotential at 10 (100) mA cm of 98 (152) mV and the Tafel slope of 40.68 mV dec, and the full voltage of 1.66 V at 100 mA cm when applied to overall water splitting. The 3D heterostructure provides more active sites, and the in situ growth improves the stability and conductivity of the catalyst. This binder-free heterostructure electrocatalyst with excellent stability and catalytic performance is a promising bifunctional electrocatalyst candidate for overall water splitting.
具有高效率、稳定性和卓越性能的双功能电催化剂在全水解领域引起了越来越多的关注，而组成和结构设计对于具有优异性能和低成本的电催化剂至关重要。在这项工作中，通过简单的水热法和磷化法在泡沫镍（NF）上原位生长异质结构Mn-Co-Fe-P纳米阵列。所得的Mn-Co-Fe-P催化剂具有良好的电催化性能，在10（100）mA cm-2的析氧反应（OER）过电位为192（279）mV，塔菲尔斜率为43.75 mV dec-1，在10（100）mA cm-2的析氢反应（HER）过电位为98（152）mV，塔菲尔斜率为40.68 mV dec-1，应用于全水解时在100 mA cm-2下的全电压为1.66 V。三维异质结构提供了更多的活性位点，原位生长提高了催化剂的稳定性和导电性。这种具有优异稳定性和催化性能的无粘结剂异质结构电催化剂是一种很有前途的用于全水解的双功能电催化剂候选材料。
