Boron- and Nitrogen-Doped Graphene Quantum Dots/Graphene Hybrid Nanoplatelets as Efficient Electrocatalysts for Oxygen Reduction

被引：398

作者：

Fei, Huilong ^{[1
]}

Ye, Ruquan ^{[1
]}

Ye, Gonglan ^{[3
]}

Gong, Yongji ^{[1
]}

Peng, Zhiwei ^{[1
]}

Fan, Xiujun ^{[2
,4
]}

Samuel, Errol L. G. ^{[1
]}

Ajayan, Pulickel M. ^{[1
,3
]}

Tour, James M. ^{[1
,2
,3
]}

机构：

[1] Rice Univ, Dept Chem, Houston, TX 77005 USA

[2] Rice Univ, Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA

[3] Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 USA

[4] Beijing Univ Technol, Coll Elect Informat & Control Engn, Beijing 100124, Peoples R China

来源：

ACS NANO | 2014年 / 8卷 / 10期

关键词：

oxygen reduction reaction; electrocatalyst; boron nitrogen doping; graphene quantum dots; coal; METAL-FREE ELECTROCATALYSTS; HIGH-SURFACE-AREA; CARBON; DOTS; CATALYST; NANOTUBES; ELECTRODE; OXIDE; SIZE;

D O I：

10.1021/nn504637y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The scarcity and high cost of platinum-based electrocatalysts for the oxygen reduction reaction (ORR) has limited the commercial and scalable use of fuel cells. Heteroatom-doped nanocarbon materials have been demonstrated to be efficient alternative catalysts for ORR. Here, graphene quantum dots, synthesized from inexpensive and earth-abundant anthracite coal, were self-assembled on graphene by hydrothermal treatment to form hybrid nanoplatelets that were then codoped with nitrogen and boron by high-temperature annealing. This hybrid material combined the advantages of both components, such as abundant edges and doping sites, high electrical conductivity, and high surface area, which makes the resulting materials excellent oxygen reduction electrocatalysts with activity even higher than that of commercial Pt/C in alkaline media.

引用

页码：10837 / 10843

页数：7

共 31 条

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