氢气储存
氢
吸附低温
碳纳米管
材料科学
碳纤维
吸附
化学工程
盐酸
重量变化
纳米技术
化学
分析化学(期刊)
复合材料
冶金
有机化学
减肥
复合数
医学
肥胖
内科学
工程类
作者
C. Liu,Yueying Fan,M. Liu,Huai‐Ping Cong,Hui‐Ming Cheng,M. S. Dresselhaus
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:1999-11-05
卷期号:286 (5442): 1127-1129
被引量:1780
标识
DOI:10.1126/science.286.5442.1127
摘要
Masses of single-walled carbon nanotubes (SWNTs) with a large mean diameter of about 1.85 nanometers, synthesized by a semicontinuous hydrogen arc discharge method, were employed for hydrogen adsorption experiments in their as-prepared and pretreated states. A hydrogen storage capacity of 4.2 weight percent, or a hydrogen to carbon atom ratio of 0.52, was achieved reproducibly at room temperature under a modestly high pressure (about 10 megapascal) for a SWNT sample of about 500 milligram weight that was soaked in hydrochloric acid and then heat-treated in vacuum. Moreover, 78.3 percent of the adsorbed hydrogen (3.3 weight percent) could be released under ambient pressure at room temperature, while the release of the residual stored hydrogen (0.9 weight percent) required some heating of the sample. Because the SWNTs can be easily produced and show reproducible and modestly high hydrogen uptake at room temperature, they show promise as an effective hydrogen storage material.
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