一种基于MOF衍生的电催化材料的制备及其性能研究设计

Preparation and Performance Design of an MOF-Derived Electrocatalytic Material

摘要: 氢气作为一种绿色可再生能源，可以缓解能源紧张的问题。电化学水分解作为可再生能源系统发展的关键途径，备受关注。我们非常希望为这些工艺制造高效的电催化剂，以减少其过电位并促进实际应用。近年来，具有超高表面积、可调纳米结构和优异孔隙率的金属有机框架(MOF)已成为开发电解水的一种有前途的高效活性催化剂。本文介绍了以泡沫镍(NF)为基底，高温磷化制备附着在泡沫镍(NF)上的MOF衍生电催化材料。用SEM、XRD等的表征方法循环分析最终材料的形貌及结构，确定了其析出氢气和氧气过程中的真正活性成分为CoFeNiZnP-MOF。通过电化学等的测试方法，得出经磷化过后的材料在1M KOH溶液中表现出优良的析氢和析氧反应电催化性能，具有低过电位、高催化活性面积、电化学耐久性等优点。在此，本文对MOFs的合成原理和电催化设计提供了新的见解，以实际利用水分解，从而进一步促进其未来在广泛应用中的繁荣发展。

Abstract: As a kind of green renewable energy, hydrogen can alleviate the problem of energy shortage. As a key approach to the development of renewable energy systems, electrochemical water decomposition has attracted much attention. We are keen to manufacture efficient electrocatalysts for these processes to reduce their overpotential and facilitate practical applications. In recent years, metal-organic frameworks (MOF) with ultra-high surface area, adjustable nanostructure and excellent porosity have become a promising and highly active catalyst for the development of water electrolysis. In this paper, MOF-derived electrocatalytic materials attached to nickel foam (NF) were prepared by phosphating at high temperature. The morphology and structure of the final material were analyzed by SEM, XRD and other characterization methods, and the real active component in the process of hydrogen and oxygen precipitation was determined to be CoFeNiZnP-MOF. Through electrochemical testing methods, it is concluded that the phosphating material shows excellent electrocatalytic performance of hydrogen evolution and oxygen evolution reaction in 1M KOH solution, and has the advantages of low overpotential, high catalytic active area and electrochemical durability. Here, this paper provides new insights into the synthesis principles and electrocatalytic design of MOFs to actually utilize water decomposition, thereby further promoting its future prosperity in a wide range of applications.