基于Mo、Mn双原子共掺杂修饰NiFe2O4材料用于析氧性能研究
NiFe2O4Materials Based on Mo and Mn Diatomic Co-Doping Were Used to Study Oxygen Evolution Performance
DOI: 10.12677/japc.2024.132028, PDF,    科研立项经费支持
作者: 顾 颖, 王敏敏*：南通大学化学化工学院，江苏 南通
关键词: 析氧反应；锰掺杂；氧空位；低过电位；Oxygen Evolution Reaction； Manganese Doping； Oxygen Vacancy； Low Overpotential
摘要: 近年来，电催化分解水被认为是一种前景较好的产生清洁能源的方法，受到广泛关注。本文采用一步水热法制备了Mo,Mn-NiFe2O4/NF催化剂，泡沫镍作为集流体一方面减少了Mo,Mn-NiFe2O4的团聚，有利于提高电荷转移速率和稳定性。更重要的是，Mn掺杂诱导电子调制使Ni 3d和O 2p轨道之间的杂交有利于*OOH的形成，同时也会产生更多的氧空位以降低析氧中水分子的吸附能，促进1 M KOH溶液中的析氧反应，而Mo原子的加入可以使得原材料具有丰富的非均相界面，与原始的Mn-NiFe2O4材料相比，表现出更好的电解水活性。在1 M KOH电解质中，所制备的Mo,Mn-NiFe2O4/NF催化剂仅需要133、187和209 mV的低过电位即可获得10、50和100 mA cm−2电流密度下的水分解。本工作提供一种简单钼、锰共掺杂的策略，以同时设计氧空位和电子结构以协同触发析氧反应。
Abstract: In recent years, electrocatalytic water decomposition has been regarded as a promising method to generate clean energy and has attracted wide attention. In this paper, Mo,Mn-NiFe2O4/NF catalyst was prepared by a one-step hydrothermal method. Nickel foam as a fluid collector on the one hand reduced the agglomeration of Mo,Mn-NiFe2O4, which was conducive to improving the charge transfer rate and stability. More importantly, the hybridization between Ni 3d and O 2p orbitals induced by Mn doping is conducive to the formation of *OOH, and at the same time, more oxygen vacancies are generated to reduce the adsorption energy of water molecules in oxygen evolution, promoting the oxygen evolution reaction in 1 M KOH solution, and the addition of Mo atoms can make the raw material have a rich heterogeneous interface. Compared with the original Mn-NiFe2O4 material, it showed better electrolytic activity. The Mo,Mn-NiFe2O4/NF catalysts prepared in 1 M KOH electrolyte require only 133, 187 and 209 mV low overpotential to obtain water decomposition at 10, 50 and 100 mA cm−2 current densities. This work provides a simple molybdenum and manganese co-doping strategy to simultaneously design oxygen vacancies and electronic structures to cooperatively trigger oxygen evolution reactions.
文章引用：顾颖, 王敏敏. 基于Mo、Mn双原子共掺杂修饰NiFe2O4材料用于析氧性能研究[J]. 物理化学进展, 2024, 13(2): 235-242. https://doi.org/10.12677/japc.2024.132028

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