在碳化物衍生碳中纳米尺度孔隙的定制,用于储存的碳
Yury Gogotsi1, Ranjan K Dash, Gleb Yushin
1Department of Materials Science and Engineering and A. J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, Pennsylvania 19104, USA. gogotsi@drexel.edu
Journal of the American Chemical Society
|November 17, 2005
概括
碳化物衍生碳 (CDC) 为储存提供了一个可调节的解决方案. 优化孔径大小,特别是1纳米左右的微孔,可以提高燃料电池应用的重力度储能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 纳米技术纳米技术
背景情况:
- 储存气仍然是燃料电池汽车开发的关键瓶.
- 现有的纳米碳还没有满足对高效的储存的期望.
研究的目的:
- 为了证明碳材料的合理设计,以改善储存.
- 调查碳化物衍生碳 (CDC) 对于储存应用的潜力.
主要方法:
- 通过碳化物的高温化生产CDC.
- 通过选择前体碳化物和化温度来调整毛孔 (毛孔大小,分布,SSA).
- 与77K异热体相关的孔状性质.
主要成果:
- 疾病预防控制中心显示可调节的多孔性,多达80%的孔径.
- 最佳的存容量是通过由微孔 (~1 nm) 主导的材料实现的.
- 较大的孔隙降低了体积储存能力,并且对吸附效率较低.
结论:
- 碳化物衍生碳是合理储存设计的有希望的材料.
- 微孔性是最大化重力度储能容量的关键.
- 控制的CDC合成为先进的储存解决方案提供了一条途径.
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