顺序电沉积策略制备铜铁复合双功能电催化剂的研究  

Sequential electrodeposition strategy for preparation of copper-iron composite bi-functional electrocatalysts

作　　者：刘庆华 李心颖 李丽 LIU Qing-hua;LI Xin-ying;LI Li(College of Chemistry and Chemical Engineering,Heze University,Heze 274015,China)

机构地区：[1]菏泽学院化学化工学院,山东菏泽274015

出　　处：《现代化工》2025年第4期213-217,共5页Modern Chemical Industry

基　　金：山东省自然科学基金(ZR2022QB132,ZR2021QB203);菏泽学院博士基金(XY21BS19,XY21BS18)。

摘　　要：为改善铁在电催化水分解过程中导电性差的问题,通过顺序电沉积策略制备铜铁复合双功能电催化剂,并探究电沉积顺序对导电性和催化性能的影响。利用电化学沉积法在泡沫镍基底(NF)上制备了5种不同的催化剂(Fe/NF、Cu/NF、Cu/Fe/NF、Fe/Cu/NF和(Fe+Cu)/NF),并进行形貌和性能分析。SEM表征结果表明,沉积的铁纳米片层具有高度有序的3D开放网络结构,可为后续铜沉积提供稳定的附着点。电化学测试结果表明,与Fe/Cu/NF和(Fe+Cu)/NF相比,Cu/Fe/NF具有更好的电催化活性和稳定性。在二电极测试中,Cu/Fe/NF可在1.65 V的低电压下进行碱性全水解,表现出优异的双功能催化效果。In order to improve the poor conductivity of iron in the process of electrocatalytic water splitting,copper-iron composite bi-functional electrocatalysts are prepared via sequential electrodeposition strategy,and the effects of electrodeposition sequence on the conductivity and catalytic performance of the catalysts prepared are explored.Five kinds of catalysts,including Fe/NF,Cu/NF,Cu/Fe/NF,Fe/Cu/NF and(Fe+Cu)/NF,are prepared on nickel foam(NF)substrates through electrochemical deposition method,and their morphology and properties are analyzed.SEM characterization results show that the deposited iron-nanosheets layer has a highly ordered 3D open network structure,which can provide a stable attachment point for subsequent copper deposition.The electrochemical testing results show that Cu/Fe/NF has better electrocatalytic activity and stability than Fe/Cu/NF and(Fe+Cu)/NF.In two-electrode tests,Cu/Fe/NF can undergo alkaline total water splitting at a low voltage of 1.65 V,showing an excellent bi-functional catalytic effect.

关 键 词：顺序电沉积 铜铁复合材料 双功能电催化剂 水分解 导电性 

分 类 号：O646.5[理学—物理化学]