Effect of Ni,Fe and Fe-Ni alloy catalysts on the synthesis of metal contained carbon nano-onions and studies of their electrochemical hydrogen storage properties  

作　　者：Chenguang Zhang Jiajun Li Chunsheng Shi Chunnian He Enzuo Liu Naiqin Zhao 

机构地区：[1]School of Materials Science and Engineering,and Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University [2]Collaborative Innovation Center of Chemical Science and Engineering,Tianjin University

出　　处：《Journal of Energy Chemistry》2014年第3期324-330,共7页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(51272173,51002188);the National Basic Research Program of China(2010CB934703);Tianjin Municipal Science and Technology Commission(12ZCZDGX00800)

摘　　要：Three types of carbon nano-onions（CNOs） including [e-mail]3C@CNOs and Fe0.64Ni0.36@CNOs nanoparticles have been synthesized by catalytic decomposition of methane at 850 ℃ using nickel,iron and iron-nickel alloy catalysts.Comparative and systematic studies have been carried out on the morphology,structural characteristics and graphitic crystallinity of these CNOs products.Furthermore,the electrochemical hydrogen storage properties of three types of CNOs have been investigated.Measurements show that the Ni@CNOs have the highest discharge capacity of 387.2 mAh/g,coiTesponding to a hydrogen storage of 1.42%.This comparison study shows the advantages of each catalyst in the growth of CNOs.enabling the controllable synthesis and tuning the properties of CNOs by mediating different metals and their alloy for using in the fuel cell system.Three types of carbon nano-onions（CNOs） including [e-mail]3C@CNOs and Fe0.64Ni0.36@CNOs nanoparticles have been synthesized by catalytic decomposition of methane at 850 ℃ using nickel,iron and iron-nickel alloy catalysts.Comparative and systematic studies have been carried out on the morphology,structural characteristics and graphitic crystallinity of these CNOs products.Furthermore,the electrochemical hydrogen storage properties of three types of CNOs have been investigated.Measurements show that the Ni@CNOs have the highest discharge capacity of 387.2 mAh/g,coiTesponding to a hydrogen storage of 1.42%.This comparison study shows the advantages of each catalyst in the growth of CNOs.enabling the controllable synthesis and tuning the properties of CNOs by mediating different metals and their alloy for using in the fuel cell system.

关 键 词：carbon nano-onion NICKEL iron iron-nickel alloy electrochemical hydrogen storage property 

分 类 号：O643.36[理学—物理化学]