Grooves of Bundled Single-Walled Carbon Nanotubes Dramatically Enhance the Activity of the Oxygen Reduction Reaction

被引:9
作者
Fujigaya, Tsuyohiko [1 ,2 ]
Morita, Junichi [1 ]
Nakashima, Naotoshi [1 ,2 ,3 ]
机构
[1] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 819039, Japan
[2] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Fukuoka 8190395, Japan
[3] Japan Sci & Technol Agcy JST, CREST, Chiyoda Ku, Tokyo 1020075, Japan
基金
日本科学技术振兴机构;
关键词
bundles; N ligands; nanotubes; oxygen; reduction; FUEL-CELL ELECTROCATALYST; SURFACE-AREA; POLYBENZIMIDAZOLE; ADSORPTION; CATALYSTS; NANOPARTICLES; SIMULATION; DESIGN; IRON; NH3;
D O I
10.1002/cctc.201402565
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nitrogen-doped graphitic structures (N-GSs) are promising and cheap catalyst candidates for the oxygen reduction reaction (ORR). In this paper, we describe, first, the synthesis of single-walled carbon nanotubes (SWNTs) coated by a N-GS (SWNT/N-GS) and, second, the dramatic enhancement in the activity of the ORR by using this catalyst relative to that observed for the analogue composite composed of multiwalled carbon nanotubes (MWNTs) coated by a N-GS (i.e., MWNT/N-GS). Scanning electron microscopy and gas-adsorption experiments revealed that the SWNT/N-GS formed a bundled structure and that superior gas adsorption behavior originated from this groove structure. It is assumed that the grooves of the bundled SWNT/N-GS dramatically enhance the activity of the ORR owing to superior O-2 adsorption on the grooves.
引用
收藏
页码:3169 / 3173
页数:5
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