Effects of Mechanical Ball Milling with Active Gases on Hydrogen Adsorption Behaviors of Graphite Flakes

被引：5

作者：

Kim, Byung-Joo ^{[2
]}

Bae, Kyong-Min ^{[1
]}

An, Kay-Hyeok ^{[2
]}

Park, Soo-Jin ^{[1
]}

机构：

[1] Inha Univ, Dept Chem, Inchon 402751, South Korea

[2] Jeonju Inst Machinery & Carbon Composites Palbokd, Smart Composite Mat Res Team, Carbon Valley R&D Div, Jeonju 561844, Jeollabuk Do, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2012年 / 12卷 / 07期

关键词：

Graphite; Hydrogen Storage; Mechanical Milling; Porous Structure; WALLED CARBON NANOTUBES; METHANOL FUEL-CELLS; STORAGE CAPACITY; POROUS CARBONS; MILLED GRAPHITE; NANOPARTICLES; TEMPERATURE; CATALYSTS; MEDIA;

D O I：

10.1166/jnn.2012.6407

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study examined the effects of the mechanical milling conditions on the hydrogen adsorption behaviors of graphite flakes under different gas streams. A ball mill technique with various gas streams during treatments was used to introduce oxygen-containing functional groups on the graphite surfaces. The structural, properties of graphite were evaluated by XRD, and the surface properties and textural properties were observed SEM, FT-IR, XPS and N-2/77 K adsorption isotherms. The hydrogen adsorption behavior of the graphite flakes were evaluated using a volumetric method at room temperature and 100 atm. The mechanically-milled graphite flakes under an oxygen stream showed a higher concentration of oxygen functional groups and greater hydrogen adsorption capacity than that of graphite flakes under an argon stream. This suggests that oxygen functional groups have good chemical affinity with hydrogen molecules in this system.

引用

页码：5713 / 5718

页数：6