Effect of Ni,Fe and Fe-Ni alloy catalysts on the synthesis of metal contained carbon nano-onions and

• 作 者: Chenguang Zhang Jiajun Li Chunsheng Shi Chunnian He Enzuo Liu Naiqin Zhao
• 机 构: School of Materials Science and Engineering,and Tianjin Key Laboratory of Composite and Functional M
• 出 处: Journal of Energy Chemistry
• 发表日期: 2014年03期
• 关键词: contained nickel crystallinity controllable have enabling metallic graphite meth

Three types of carbon nano-onions(CNOs) including [e-mail]_3C@CNOs and Fe_(0.64)Ni_(0.36)@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 Ni @ CNOs.Fe_3C @ CNOs and Fe_ (0.64) Ni_ (0.36) @CNOs nanoparticles have been synthesized by catalytic decomposition of methane at 850 ℃ using nickel, iron and iron- 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 alloys for using in the fuel cell system.