A Platelet Graphitic Nanofiber-Carbon Nanotube Hybrid for Efficient Oxygen Evolution Reaction

被引：28
|
作者：
Ali, Zulfiqar [1 ,2 ]
Mehmood, Mazhar [2 ]
Ahmad, Jamil [2 ]
Li, Xin [1 ]
Majeed, Abdul [1 ]
Tabassum, Hassina [3 ]
Hou, Peng-Xiang [1 ]
Liu, Chang [1 ]
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
[2] Pakistan Inst Engn & Appl Sci, Natl Ctr Nanotechnol, Dept Met & Mat Engn, Nilore 45650, Pakistan
[3] Peking Univ, Beijing Key Lab Theory & Technol Adv Battery Mat, Dept Mat Sci & Engn, Beijing 100871, Peoples R China
来源：
CHEMCATCHEM | 2020年 / 12卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Platelet graphitic nanofiber; Carbon nanaotube; Alcogel electrolysis; CVD; OER electrocatalysis; IN-SITU FORMATION; BIFUNCTIONAL ELECTROCATALYST; REDUCTION; CATALYSTS; NANOSTRUCTURES; NANOSHEETS; COMPOSITE; HYDROXIDE; OXIDATION; GROWTH;
D O I：
10.1002/cctc.201901462
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：
Carbon nanostructures with a high-density of active sites are needed as catalysts for the oxygen evolution reaction (OER). Here we report a platelet graphitic nanofiber-carbon nanotube (PGNF-CNT) hybrid electrocatalyst prepared by chemical vapor deposition. The material is composed of interconnected CNTs and nanofibers consisting of graphitized carbon layers stacked at different angles to the fiber axis with a large number of exposed edges. These unique structural characteristics give the hybrid a high density of active sites, fast electron transfer and a large number of mass transport paths. As a result, the material has an excellent electrocatalytic activity for OER with an overpotential of 0.28V at a current density of 10mAcm(-2), which is much better than those of Ir/C and previously-reported carbonaceous catalysts.
引用
收藏
页码：360 / 365
页数：6
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