PdCu合金纳米催化剂的制备及电化学表征  

Preparation and electrochemical characterization of PdCu alloy nanocatalysts

作　　者：林浩 庞明远 张浩浩 孔震 安娟 LIN Hao;PANG Mingyuan;ZHANG Haohao;KONG Zhen;AN Juan(College of Biological and Chemical Engineering,Qilu Institute of Technology,Jinan 250200,Shandong,China)

机构地区：[1]齐鲁理工学院生物与化学工程学院,山东济南250200

出　　处：《能源化工》2025年第1期20-25,共6页Energy Chemical Industry

基　　金：山东省自然科学基金(No.ZR2024QB302、ZR2024QE450)。

摘　　要：乙醇因其能量密度高、易储存、排放低等特点而成为备受关注的绿色能源。作为可持续和可再生能源应用的关键领域,提高直接乙醇燃料电池(DEFC)的性能对于能源转换技术的发展较为重要。为了更有效地促进乙醇氧化反应,提出了一种简单的一步合成方法来制备不同配比的PdCu纳米催化剂。采用SEM和XRD等分析方法表征了催化剂的形态、晶体结构和化学成分。结果表明,PdCu合金晶体结构已被成功构建,Pd_(4)Cu_(1)催化剂表现出优异的催化活性,乙醇氧化电流密度高达1 960mA/mg和最低的起始电位。此外,Pd_(4)Cu_(1)在抗中毒性和电子转移效率方面优于其他PdCu催化剂,为DEFC的开发提供了高性能催化剂。Ethanol has become a green energy source of great concern due to its high energy density,easy storage,and low emission characteristics.As a key area for sustainable and renewable energy applications,the improvement of the performance of direct ethanol fuel cells(DEFC) is crucial for the development of energy conversion technology.In order to more effectively promote the ethanol oxidation reaction,a simple one-step synthesis method is proposed to prepare PdCu nanocatalysts with different ratios.By using advanced technologies such as SEM and XRD,the morphology,crystal structure,and chemical composition of these catalysts are characterized.The XRD pattern clearly confirmes the successful construction of the PdCu alloy crystal structure.Electrochemical performance tests show that the Pd_(4)Cu_(1) catalyst exhibited excellent catalytic activity,with an ethanol oxidation current density of up to1 960 mA/mg and the lowest starting potential.In addition,Pd_(4)Cu_(1) is superior to other PdCu catalysts in terms of resistance to poisoning and electron transfer efficiency,providing a new choice of high-performance catalysts for the development of DEFC.

关 键 词：直接乙醇燃料电池 PdCu合金催化剂 电化学性能 

分 类 号：TQ426.82[化学工程]