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李顺利副教授和兰亚乾教授课题组在ACS APPLIED MATERIALS & INTERFACES发表研究论文

发布时间:17-07-02 13:03:25 文章来源:1 浏览次数: [ 字号:


Bimetallic Carbides-Based Nanocomposite as Superior Electrocatalyst for Oxygen Evolution Reaction
Tang, YJ (Tang, Yu-Jia)[ 1 ] ; Liu, CH (Liu, Chun-Hui)[ 1 ] ; Huang, W (Huang, Wei)[ 1 ] ; Wang, XL (Wang, Xiao-Li)[ 1 ] ; Dong, LZ (Dong, Long-Zhang)[ 1 ] ; Li, SL (Li, Shun-Li)[ 1 ]*(李顺利); Lan, YQ (Lan, Ya-Qian)[ 1 ]*(兰亚乾)

[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China

ACS APPLIED MATERIALS & INTERFACES,201705,9(20),16978-16986

The development of highly efficient and low-cost oxygen evolution electrocatalysts is extremely imperative for the new energy technology. Transition metal carbides have been investigated as remarkable hydrogen evolution reaction (HER) electrocatalysts but undesired oxygen evolution reaction (OER) electrocatalysts and need further study. Here, a cobaltinolybdenum-based bimetallic carbide coated by N-doped porous carbon and anchored on N-doped reduced graphene oxide film (Co6Mo6C2/NCRGO) is synthesized by directly carbonizing the Co-doped polyoxometalate/conductive polyiner/grapheoe oxide (Co-PCG) precursors. The precise control of the Co/Mo Molar ratio in. the Co-PCG precursor is of critical importance to synthesize pure phase bimetallic carbide of Co6Mo6C2. As the highly active and robust OER electrocatalyst, the Co6Mo6C2/NCRGO composite exhibits excellent activity in alkaline solution, affording a low overpotential of 260 mV versus RHE at 10 mA cm(-2), a small Tafel slope of 50 mV dec(-1), as well as long-term stability. The superior OER performances are strongly associated with the active Co6Mo6C2 particles, polypyrrole (Pky)-derived N-doped porous carbon, and the conductive RGO films. Remarkably, it is the first evidence that the bimetallic carbides were used as the OER catalysts with such high OER activity.


文章链接:
http://pubs.acs.org/doi/abs/10.1021/acsami.7b01096
 


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