微米花状NiFe-LDH的制备及其析氧性能研究  

Microflower-Like NiFe-LDH Catalyst: Preparation and Performance of Oxygen Evolution Reaction

作　　者：焦宇鸿 吴方 葛金龙 秦英月 JIAO Yühong;WU Fang;GE Jinlong;QIN Yingyue(School of Material and Chemical Engineering,Bengbu University,Bengbu 233030,China;Anhui Provincial Engineering Laboratory of Silicon-Based Materials,Bengbu 233030,China)

机构地区：[1]蚌埠学院材料与化学工程学院,安徽蚌埠233030 [2]安徽省硅基新材料工程实验室,安徽蚌埠233030

出　　处：《长春师范大学学报》2024年第4期65-70,106,共7页Journal of Changchun Normal University

基　　金：蚌埠学院高水平科研培育项目“镍铁基MOFs的制备及其OER性能研究”(2021pyxm08);蚌埠学院高层次人才科研启动项目(BBXY2021KYQD04)。

摘　　要：以层状双金属氢氧化物为基础,采用简单的水热合成法制备一系列二元NiFe-LDH催化剂。利用XRD、SEM和极化曲线等测试了系列催化剂的晶体结构、形貌和析氧活性。相比于单一的Ni(OH)_(2)催化剂,优化制备的NiFe-LDH-1具有最佳的OER活性,达到10 mA·cm^(-2)和100 mA·cm^(-2)的电流密度时,NiFe-LDH-1所需的过电位为218 mV和264 mV,Tafel斜率为36.3 mV·dec^(-1),同时该催化剂拥有优异的催化稳定性。Based on layered double hydroxides,a series of binary NiFe-LDH catalysts were prepared by a simple hydrothermal synthesis method.The crystal structure,morphology and oxygen evolution activity of the catalysts were tested by XRD,SEM and polarization curve.Compared with Ni(OH)2,NiFe-LDH-1 exhibited the best OER activity with overpotentials of 218 mV and 264 mV at 10 mA·cm^(-2) and 100 mA·cm^(-2),and a Tafel slope of 36.3 mV·dec^(-1).Meanwhile,NiFe-LDH-1 exhibited excellent long-term stability.

关 键 词：析氧反应 NiFe-LDH 电解水 水热制备 

分 类 号：TQ151.1[化学工程—电化学工业]