碳纳米管的球磨处理及其对储氢性能的影响  

BALL MILLING PROCESS AND ITS EFFECTS ON HYDROGEN STORAGE OF CARBON NANOTUBES

作　　者：刘芙[1] 张孝彬[1] 涂江平[1] 程继鹏[1] 孔凡志[1] 孙沿林[1] 卢焕明[2] 陈长聘[1] 

机构地区：[1]浙江大学材料系,杭州310027 [2]浙江大学硅材料国家重点实验室,杭州310027

出　　处：《太阳能学报》2003年第1期116-120,共5页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展规划资助项目 (G2 0 0 0 0 2 64 0 6);国家自然科学基金项目 ( 5 9872 0 3 0 );浙江省自然科学基金项目 (No .610 0 0 0 7)

摘　　要：采用电子显微镜分析技术研究了碳纳米管经过不同时间和不同方式机械球磨处理后其微观组织和结构的变化 ,并探讨了球磨对碳纳米管储氢性能的影响。研究结果表明 ,机械球磨可以截断碳管 ,碳管长度从原来的微米级降到几十到几百纳米 ;同时碳管端口打开 ,缺陷增多 ,表面积增大。在球磨的碳管中加入纳米级MgO ,可使球磨效果更显著。球磨 2h处理的碳纳米管的储氢量是未球磨碳纳米管储氢量的 2倍以上 ,达到 0 4 4wt%。而加入MgO球磨 1h后 ,其储氢量达到 0 81wt%。The effects of mechanical ball milling with different time and different methods on the microstructure and texture of carbon nanotubes were investigated by means of electron microscopy, and the effects on hydrogen storage in carbon nanotubes were studied. The results showed that mechanical ball milling could break the carbon nanotubes, shorten their length from several micrometers to scores of several hundreds of nanometers and open the top of the tubes, increasing their surface defects and surface area at the same time. The effects of ball milling would be more distinct when to add nanometer MgO to carbon nanotubes. The hydrogen storage capacity in milling carbon nanotubes for 2h was 0 44wt%, which was two times of without milling carbon nanotubes; and when milling with MgO for 1h, 0 81wt% was obtained.

关 键 词：碳纳米管 球磨 储氢 

分 类 号：TK91[动力工程及工程热物理]