Hydrogen storage properties of carbons doped with ruthenium, platinum, and nickel nanoparticles
Hydrogen storage properties of carbons doped with ruthenium, platinum, and nickel nanoparticles
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DOI：
10.1021/jp803093w
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发表时间：
2008-07
影响因子：
3.7
通讯作者：
Lifeng Wang;R. T. Yang
中科院分区：
文献类型：
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作者：
Lifeng Wang;R. T. Yang
研究了模板碳（TC）和掺杂三种不同金属（Ru、Pt和Ni）的超活性炭（AX-21）两种高表面积碳材料的氢吸附性能。TC和AX-21的平衡储氢容量依次为Ru/C > Pt/C > Ni/C。在298 K和10.3 MPa下，Ru掺杂在模板碳（Ru/TC）上的储氢容量为1.43 wt %。此外，采用热还原方法增加Ru金属颗粒与碳载体之间的接触，从而促进氢的溢出。热还原钌掺杂模板碳（Ru/TC-T）在298 K和10.3 MPa下的储氢率最高，为1.56 wt %，与未掺杂碳相比，储氢率提高了2倍。这些实验结果用一个简单的氢溢出机制模型来解释。
Hydrogen adsorption properties of two different high surface area carbon materials of templated carbon (TC) and superactivated carbon (AX-21) doped with three different metals (Ru, Pt, and Ni) have been studied. The equilibrium hydrogen storage capacities followed the order of Ru/C > Pt/C > Ni/C on both TC and AX-21. Ru doped on templated carbon (Ru/TC) showed a hydrogen storage capacity of 1.43 wt % at 298 K and 10.3 MPa. Furthermore, a thermal reduction method was applied to increase the contacts between the Ru metal particles and the carbon support, and in turn, to facilitate hydrogen spillover. The ruthenium-doped templated carbon by thermal reduction (Ru/TC-T) showed the highest hydrogen storage of 1.56 wt % at 298 K and 10.3 MPa, resulting in an enhancement factor of 2 compared with that of the undoped carbon. These experimental results were interpreted by using a simple mechanistic model for hydrogen spillover.