Mechanical Ball-Milling Preparation of Fullerene/Cobalt Core/Shell   Nanocomposites with High Electrochemical Hydrogen Storage Ability

doi:10.1021/am405458u

CORC > 北京大学 > 化学与分子工程学院

	Mechanical Ball-Milling Preparation of Fullerene/Cobalt Core/Shell Nanocomposites with High Electrochemical Hydrogen Storage Ability
	Bao, Di ; Gao, Peng ; Shen, Xiande ; Chang, Chen ; Wang, Longqiang ; Wang, Ying ; Chen, Yujin ; Zhou, Xiaoming ; Sun, Shuchao ; Li, Guobao ; Yang, Piaoping
刊名	acs applied materials interfaces
	2014
关键词	C-60/Co ball-milling core/shell Co-C bond nanocomposite electrochemical hydrogen storage METAL-ORGANIC FRAMEWORKS WALLED CARBON NANOTUBES LITHIUM-ION BATTERIES HYDRIDE ELECTRODES CO ALLOYS COBALT C-60 COMPOSITES BEHAVIORS
DOI	10.1021/am405458u
英文摘要	The design and synthesis of new hydrogen storage nanomaterials with high capacity at low cost is extremely desirable but remains challenging for today's development of hydrogen economy. Because of the special honeycomb structures and excellent physical and chemical characters, fullerenes have been extensively considered as ideal materials for hydrogen storage materials. To take the most advantage of its distinctive symmetrical carbon cage structure, we have uniformly coated C-60's surface with metal cobalt in nanoscale to form a core/shell structure through a simple ball-milling process in this work. The X-ray diffraction (XRD), scanning electron microscope (SEM), Raman spectra, high-solution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectrometry (EDX) elemental mappings, and X-ray photoelectron spectroscopy (XPS) measurements have been conducted to evaluate the size and the composition of the composites. In addition, the blue shift of C-60 pentagonal pinch mode demonstrates the formation of Co-C chemical bond, and which enhances the stability of the as-obtained nanocomposites. And their electrochemical experimental results demonstrate that the as-obtained C-60/Co composites have excellent electrochemical hydrogen storage cycle reversibility and considerably high hydrogen storage capacities of 907 mAh/g (3.32 wt % hydrogen) under room temperature and ambient pressure, which is very close to the theoretical hydrogen storage capacities of individual metal Co (3.33 wt % hydrogen). Furthermore, their hydrogen storage processes and the mechanism have also been investigated, in which the quasi-reversible C-60/Co <-> C-60/Co-H-x reaction is the dominant cycle process.; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; SCI(E); EI; 1; ARTICLE; gaopeng@hrbeu.edu.cn; chenyujin@hrbeu.edu.cn; yangpiaoping@hrbeu.edu.cn; 4; 2902-2909; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/215706]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Bao, Di,Gao, Peng,Shen, Xiande,et al. Mechanical Ball-Milling Preparation of Fullerene/Cobalt Core/Shell Nanocomposites with High Electrochemical Hydrogen Storage Ability[J]. acs applied materials interfaces,2014.
APA	Bao, Di.,Gao, Peng.,Shen, Xiande.,Chang, Chen.,Wang, Longqiang.,...&Yang, Piaoping.(2014).Mechanical Ball-Milling Preparation of Fullerene/Cobalt Core/Shell Nanocomposites with High Electrochemical Hydrogen Storage Ability.acs applied materials interfaces.
MLA	Bao, Di,et al."Mechanical Ball-Milling Preparation of Fullerene/Cobalt Core/Shell Nanocomposites with High Electrochemical Hydrogen Storage Ability".acs applied materials interfaces (2014).