Hydrogen storage in Ni-B nanoalloy-doped 2D graphene

被引:43
作者
Wang, Yi [1 ,3 ]
Liu, Jiehua [4 ]
Wang, Kean [1 ,5 ]
Chen, Tao [1 ,2 ]
Tan, Xin [3 ]
Li, Chang Ming [1 ,2 ]
机构
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore
[2] Southwest Univ, Inst Clean Energy & Adv Mat, Chongqing 400715, Peoples R China
[3] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[4] Nanyang Technol Univ, Sch Phys & Math Sci, Singapore 639798, Singapore
[5] Petr Inst, Dept Chem Engn, Abu Dhabi, U Arab Emirates
关键词
Hydrogen storage; Graphene; Ni-B nanoalloys; Spillover; Adsorption; CARBON NANOTUBES; METAL-OXIDE; SPILLOVER; ADSORPTION; PLATINUM; CAPACITY; KINETICS;
D O I
10.1016/j.ijhydene.2011.07.034
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Two-dimensional graphene material is doped with Ni-B nanoalloys via a chemical reduction method, and shows that the optimal graphene doped with Ni (0.14 wt.%) and B (0.63 wt.%) has a hydrogen capacity of 2.81 wt.% at 77 K and 106 kPa, which is more than twice of that of the pristine graphene. The measured adsorption isotherms of hydrogen and nitrogen suggest that the Ni-B nanoalloys function as catalytic centers to induce the dissociative adsorption of hydrogen (spillover) on the graphene. The Ni-B nanoalloys without using any noble metal may be a promising catalyst for hydrogen storage application. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:12950 / 12954
页数:5
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