用于电解水制氢的镍铁层状双氢氧化物改性研究进展

Research Progress on Modification of Nickel-Iron Layered Double Hydroxide for Hydrogen Production by Electrolytic Water

镍铁层状双氢氧化物(NiFe-LDH)具有独特的化学组成和结构特性,因其价格低廉,比表面积大、层状结构可控,而且表现出较为突出的催化析氧活性,被认为是有开发潜质的非贵金属析氧催化剂。但NiFe-LDH存在电导率低、表面活性位点不足等问题,限制了电子转移效率,影响了析氧反应的进行,目前还无法满足电解水制氢的实用性要求。因此,对NiFe-LDH在合成方法改进和本征活性改进2个方面进行综述,为深入探索NiFe-LDH的合成及应用提供思路,并对NiFe-LDH在电解水析氧反应中的应用发展进行展望。

Nickel-iron layered double hydroxide(NiFe-LDH)has unique chemical composition and structural characteristics.Boasting of inexpensive cost,large specific surface area,controllable layered structure,and relatively outstanding catalytic oxygen evolution activity,NiFe-LDH is considered as a non-noble metal oxygen evolution catalyst with potential for development.However,it has such shortcomings as low conductivity and insufficient surface active sites,limiting the efficiency of electron transfer and affecting the progress of oxygen evolution reaction.At present,it still cannot meet the practical requirements of hydrogen production by electrolytic water.Therefore,the improvements of NiFe-LDH in synthesis method and intrinsic activity are reviewed to provide ideas for further exploration of the synthesis and application of NiFe-LDH,and the application and development of NiFe-LDH in the oxygen evolution reaction of electrolytic water is prospected.