PdB非晶态合金燃料电池阴极氧还原催化剂的制备及性能研究  

Study on Preparation and Performance for Oxygen Reduction Reaction of Amorphous Pd-B Nanoparticle Catalyst

作　　者：李永坤 李秀婷 袁昆华 于毅鹏 曾凯 郑玉玲 LI Yongkun;LI Xiuting;YUAN Kunhua;YU Yipeng;ZENG Kai;ZHENG Yuling(College of Life Sciences and Chemistry,Minnan University of Science and Technology,Quanzhou 362332,China)

机构地区：[1]闽南科技学院生命科学与化学学院,福建泉州362332

出　　处：《常熟理工学院学报》2023年第2期13-17,共5页Journal of Changshu Institute of Technology

基　　金：福建省自然科学基金项目“高性能钯基复合电极的研发”(51408527)。

摘　　要：采用液相还原法设计制备了非晶态PdB纳米颗粒催化剂.该催化剂用KBH4作为还原剂和硼的来源,通过控制温度制备具有非晶态结构的尺寸不同的PdB纳米催化剂.X射线粉末衍射(XRD)和扫描电子显微镜(SEM)测试表明0和25℃时制备的催化剂呈现非晶态结构,50℃时为晶态结构,随着温度的升高,PdB的结构由非晶态转变为晶态.采用循环伏安法(CV)和线性扫描伏安法(LSV)等方法,探究了非晶态PdB合金纳米颗粒催化剂在碱性溶液中对氧还原反应的电催化活性和稳定性.实验结果表明,温度为0℃时制备的非晶态PdB合金纳米颗粒催化剂具有最高的电催化活性及稳定性.Liquid-phase reduction method was designed to prepare an amorphous Pd-B nanoparticle catalyst that uses KBH4 as both reductant and source of boron.By controlling temperatures,preparations were made of different nano-sized amorphous structures of Pd-B catalysts.As revealed through XRD analysis and SEM characterization,the catalysts at a temperature of 0℃and 25℃preparation exhibit an amorphous structure,and a crystalline structure at a temperature of 50℃,indicating that the structure of PdB changes from amorphous to crystalline with the increase of temperature.Electrochemical properties were characterized by cyclic voltammetry(CV)and linear sweep voltammetry(LSV)and other methods.We explored the catalytic activity and stability of amorphous Pd-B nanoparticle catalysts in an alkaline solution of methanol,ethanol,glucose,and oxygen reduction.The experimental results showed that the catalyst had the highest electro-catalytic activity and stability through Pd-B-0℃amorphous nanoparticles(Pd-B).

关 键 词：非晶合金 纳米颗粒 氧还原反应 

分 类 号：O69[理学—化学]