钴铁双金属氧化物多孔纳米棒的制备及其电解水析氧性能  

Porous Cobalt-Iron Binary Metal Oxides Nanorods as Efficient Oxygen Evolving Catalysts for Water Splitting

作　　者：高旭升[1] 刘光[1] 史沁芳 王开放[1] 许丽娟[1] 贺冬莹 李晋平[1] 

机构地区：[1]太原理工大学精细化工研究所,太原030024

出　　处：《无机化学学报》2017年第4期623-629,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51402205);山西省基础研究计划(No.2015021058)资助项目

摘　　要：通过简单的钴铁前躯体热分解法制备了系列一维Co_(1-x)Fe_xO_y(0≤x≤1)多孔纳米材料,并在1 mol·L^(-1) KOH溶液中研究了其电解水析氧催化性能。研究发现不同Fe掺杂量对材料的结构与电解水析氧催化性能有较大的影响,其中16%(n/n)Fe掺杂量的Co_(1-x)Fe_xO_y具有最优的析氧催化性能。在10 m A·cm^(-2)电流密度下其析氧过电位为345 mV,塔菲尔斜率为54 mV·dec^(-1),并表现出优异的析氧稳定性能。廉价、高效的Co_(1-x)Fe_xO_y多孔纳米棒材料有望成为优良的析氧催化剂用于电解水制氢。A series of porous Co1-xFexOy（0 ≤ x ≤ 1） nanorods were fabricated by a simple thermal decomposed of CoFe-NTA precursors and were served as oxygen evolving catalysts for water electrolysis in 1 mol·L^-1 KOH solution. It was found that different Fe doping amounts have dramatically effects on the structure and electrocatalytic water oxidation activities and the 16%（n/n） Fe-doping sample exhibited the most excellent oxygen evolving activity. A lowered overpotential of 345 mV was achieved at a current density of 10 mA·cm^-2 with a Tafel slope of 54 mV·dec^-1 for the 16% Fe-doping sample, which suggest that it can be applied as low cost and efficient oxygen catalyst for water splitting.

关 键 词：电解水 析氧反应 钴铁氧化物 纳米棒 

分 类 号：TQ116.21[化学工程—无机化工] O614.811[理学—无机化学]