Nitrogen-doped graphene microtubes with opened inner voids: Highly efficient metal-free electrocatalysts for alkaline hydrogen evolution reaction  

作　　者：Bing Zhang Hong-Hui Wang Hui Su Li-Bing Lv Tian-Jian Zhao Jie-Min Ge Xiao Wei 

机构地区：[1]School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Nano Research》2016年第9期2606-2615,共10页纳米研究（英文版）

基　　金：This work was financially supported by National Basic Research Program of China (No.2013CB934102),the National Natural Science Foundation of China (Nos.21331004 and 21301116),SJTU-UM joint grant and Shanghai Eastern Scholar Program.

摘　　要：A facile method was developed to fabricate nitrogen-doped graphene microtubes (N-GMT) with ultra-thin walls of 1–4 nm and large inner voids of 1–2 μm. The successful introduction of nitrogen dopants afforded N-GMT more active sites for significantly enhanced hydrogen evolution reaction (HER) activity, achieving a current density of 10 mA·cm–2at overpotentials of 0.464 and 0.426 V vs. RHE in 0.1 and 6 M KOH solution, respectively. This HER performance surpassed that of the best metal-free catalyst reported in basic solution, further illustrating the great potential of N-GMT as an efficient HER catalyst for real applications in water splitting and chlor-alkali processes. [Figure not available: see fulltext.] © 2015, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.A facile method was developed to fabricate nitrogen-doped graphene microtubes (N-GMT) with ultra-thin walls of 1–4 nm and large inner voids of 1–2 μm. The successful introduction of nitrogen dopants afforded N-GMT more active sites for significantly enhanced hydrogen evolution reaction (HER) activity, achieving a current density of 10 mA·cm–2at overpotentials of 0.464 and 0.426 V vs. RHE in 0.1 and 6 M KOH solution, respectively. This HER performance surpassed that of the best metal-free catalyst reported in basic solution, further illustrating the great potential of N-GMT as an efficient HER catalyst for real applications in water splitting and chlor-alkali processes. [Figure not available: see fulltext.] © 2015, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.

关 键 词：GRAPHENE MICROTUBES green chemistry hydrogen evolution reaction water splitting 

分 类 号：O6[理学—化学]