Synthesis of Ni/Graphene Nanosheets via Electron Beam Irradiation and Their Enhanced Electrochemical Hydrogen Storage Properties

Bulletin of the Korean Chemical Society

Hyeon Gwak¹  Won‐¹  Min Paek²  Jae‐³  Young‐³  Jae Lee³  Seung‐⁴  Je Min⁵  Min Oh⁵  Gyeong‐⁵ 

[1] 701 Republic of Korea;710 Republic of Korea;Department of Chemistry and Green‐Department of Chemistry and Medical Chemistry, College of Science and Technology Yonsei University Wonju 220‐Nano Materials Research Center Kyungpook National University Taegu 702‐

关键词: Exfoliation;    Graphene nanosheet;    Electron beam irradiation;    Hydrogen storage;   

DOI  :  10.1002/bkcs.10530

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A nanostructured Ni(OH)2/graphene oxide (GO) hybrid was fabricated via the controlled reassembly of exfoliated GO with nickel hydroxide to form a delaminated structure. To examine the effect of electron beam irradiation on the hybrid material, the obtained Ni(OH)2/GO was exposed to the electron beam, and the total doses of the electron beam were varied from 150 to 250 kGy. The electron‐beam‐irradiated hybrid was reduced to fabricate a new nanostructured material in which nickel nanoparticles were homogeneously deposited onto the graphene nanosheets (GNS). According to the transmission electron microscopy analysis, a large number of defect sites could be developed after the electron beam treatments. The electrochemical hydrogen storage property (approximately 170 mAh/g) of the hybrid sample after the electron beam treatment was determined to be much superior to that of the GNS (approximately 20 mAh/g), demonstrating that this synthetic methodology via electron beam bombardment could be extended to the development of new nanostructured materials with enhanced hydrogen storage properties.

【 授权许可】

Unknown