Hydrogen storage performance in palladium-doped graphene/carbon composites

被引：99

作者：

Chen, Chien-Hung ^{[1
]}

Chung, Tsui-Yun ^{[1
]}

Shen, Chin-Chang ^{[1
]}

Yu, Ming-Sheng ^{[1
]}

Tsao, Cheng-Si ^{[1
]}

Shi, Gia-Nan ^{[2
]}

Huang, Chen-Chia ^{[3
]}

Ger, Ming-Der ^{[4
]}

Lee, Wen-Lung ^{[5
]}

机构：

[1] Inst Nucl Energy Res, Tao Yuan 32546, Taiwan

[2] Natl Def Univ, Chung Cheng Inst Technol, Grad Sch Def Sci, Tao Yuan 335, Taiwan

[3] Natl Yunlin Univ Sci & Technol, Dept Chem & Mat Engn, Touliu 64002, Yunlin, Taiwan

[4] Natl Def Univ, Chung Cheng Inst Technol, Dept Chem & Mat Engn, Tao Yuan 335, Taiwan

[5] AF Acad, Dept Math & Phys, Kaohsiung 820, Taiwan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 09期

关键词：

Hydrogen storage; Graphene; Secondary spillover; METAL-ORGANIC FRAMEWORKS; SURFACE OXYGEN GROUPS; CARBON NANOFIBERS; SPILLOVER; ADSORPTION; CAPACITY; SHEETS;

D O I：

10.1016/j.ijhydene.2013.01.070

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：

In this study a two-dimensional graphene sheet (GS) doped with palladium (Pd) nanoparticles was physically mixed with a superactivated carbon (AC) receptor and used as a hydrogen adsorbent. The hydrogen adsorption/desorption isotherm of the Pd-doped GS catalyst/AC composite (Pd-GS/AC) is determined using a static volumetric measurement at room temperature (RT) and pressure up to 8 MPa. The experiments show that the H-2 uptake capacity of 0.82wt.% for Pd-GS/AC is obviously enhanced, measuring 49% more than the 0.55wt.% for Pd-free GS/AC at RT and 8 MPa. Highly reversible behavior of Pd-GS/AC is also observed. Moreover, the isosteric heat of adsorption for Pd-GS/AC (-14 to -10 kJ/mol) is higher than that for pristine AC (-8 kJ/mol). An increase in H-2 uptake in the Pd-GS/AC suggests the occurrence of a relatively strong interaction between the spilt-over H and the receptor sites due to the spillover effect. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：3681 / 3688

页数：8

共 45 条

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