钴镍双金属磷化物的制备及OER性能研究

Preparation and OER Performance of Cobalt-Nickel Bimetallic Phosphide

作为高效、持续、清洁的制氢方式之一,电化学水分解在很大程度上依赖于经济高效和稳定的电催化剂。通过搅拌浸泡将Co^(2+)和Ni^(2+)吸附在阳离子交换树脂上,随后通过高温煅烧,合成了一系列钴镍双金属磷化物NiCoP-x@C。实验表明,NiCoP-x@C为多孔结构,具有丰富的多孔纳米颗粒,对OER作出了主要贡献,此外,双金属掺杂和P含量的增加也促进了析氧反应的催化活性。对于OER,NiCoP-2B@C的过电位为366 mV,Tafel为52.09 mV·dec^(-1),为OER催化剂的设计和制备提供了一种新的策略。

As one of the efficient,continuous and clean hydrogen production methods,electrochemical water splitting depends on economical,efficient and stable electrocatalysts to a great extent.In this paper,Co^(2+)and Ni^(2+)were adsorbed on cation exchange resin by stirring and soaking,and then a series of cobalt-nickel bimetallic phosphides NiCoP-x@C were synthesized by high temperature calcination.The experimental results show that NiCoP-x@C has a porous structure and is rich in porous nanoparticles,which makes a major contribution to OER.In addition,bimetallic doping and the increase of P content also promote the catalytic activity of oxygen evolution reaction.For OER,the overpotential of NiCoP-2B@C is 366 mV,and Tafel is 52.09 mV·dec^(-1).This paper provides a new strategy for the design and preparation of OER catalysts.