Nanosized Rh grown on single-walled carbon nanohorns for efficient methanol oxidation reaction  

作　　者：Xiang-Jie Guo Qi Zhang Ya-Nan Li Yang Chen Lu Yang Hai-Yan He Xing-Tao Xu Hua-Jie Huang 

机构地区：[1]Collegeof Mechanics and Materials Hohai University,Nanjing 210098,China [2]International Center for Materials Nanoarchitectonics(WPI-MANA),National Institute for Materials Science,Ibaraki 305-0044,Japan

出　　处：《Rare Metals》2022年第6期2108-2117,共10页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No.51802077);the Fundamental Research Funds for the Central Universities (No. B210202093)

摘　　要：Reasonable design and controllable synthesis of non-Pt catalysts with high methanol oxidation activity are regarded as a valid way to promote the large-scale com-mercial applications of direct methanol fuel cells(DMFCs).Herein,we develop a convenient and cost-ef-fective approach to the successful fabrication of nanosized Rh grown on single-walled carbon nanohorns(Rh/SWCNH)as anode catalysts for DMFCs.The unique architectural configuration endows the as-obtained hybrids with a series of intriguing structural merits,including large specific surface areas,abundant opened holes,optimized electronic structures,homogeneous Rh dispersion,and good electrical conductivity.As a consequence,the resulting Rh/SWCNH catalysts exhibit exceptional elec-trocatalytic properties in terms of a large electrochemically active surface area of 102.5 m^(2)·g^(-1),a high mass activity of 784.0 mA·mg^(-1),as well as reliable long-term durability towards the methanol oxidation reaction in alkaline media,thereby holding great potential as alternatives for com-mercial Pt/carbon black and Pd/carbon black catalysts.

关 键 词：RHODIUM Carbon nanohorns ELECTROCATALYSTS Methanol oxidation Fuel cells 

分 类 号：TM911.4[电气工程—电力电子与电力传动] O643.36[理学—物理化学]