Hydrogen storage in hybrid of layered double hydroxides/reduced graphene oxide using spillover mechanism

被引：72
作者：
Ensafi, Ali A. [1 ]
Jafari-Asl, Mehdi [1 ]
Nabiyan, Afshin [1 ]
Rezaei, Behzad [1 ]
Dinari, Mohammad [1 ]
机构：
[1] Isfahan Univ Technol, Dept Analyt Chem, Coll Chem, Esfahan 8415683111, Iran
来源：
ENERGY | 2016年 / 99卷
基金：
美国国家科学基金会;
关键词：
Spillover mechanism; Redox replacement; Hydrogen storage; Graphene; Layered double hydroxides; METAL-ORGANIC FRAMEWORK; CARBON NANOTUBES; NI ALLOY; PD; NANOPARTICLES; SITES; NANOSTRUCTURES; ADSORPTION; EVOLUTION; OXIDATION;
D O I：
10.1016/j.energy.2016.01.042
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
New efficient hydrogen storage hybrids were fabricated based on hydrogen spillover mechanism, including chemisorptions and dissociation of H-2 on the surface of LDH (layered double hydroxides) and diffusion of H to rGO (reduced graphene oxide). The structures and compositions of all of the hybrids (LDHs/rGO) have been verified using different methods including transmission electron microscopy, X ray diffraction spectroscopy, infrared spectroscopy and Brunauer-Emmett-Teller analysis. Then, the abilities of the LDHs/rGOs, as hydrogen spillover, were investigated by electrochemical methods. In addition, the LDHs/rGOs were decorated with palladium, using redox replacement process, and their hydrogen spillover properties were studied. The results showed that the hydrogen adsorption/desorption kinetics, hydrogen storage capacities and stabilities of (PdLDH)-L-#/rGOs are better than Pd/rGO. Finally presence of different polymers (synthesis with monomers, 4-aminophenol, 4-aminothiophenol, o-phenylenediamine and p-phenylenediamine) at the surface of the Pd#LDH/rGOs on hydrogen storage were studied. The results showed that presence of o-phenylenediamine and p-phenylenediamine improves the kinetics of the hydrogen adsorption/desorption and increase the capacity of the hydrogen storage. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：103 / 114
页数：12
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