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庞欢教授课题组在JMCA上发表研究论文
发布日期:2018-07-16 浏览次数: 字号:[ ]

Ultrathin two-dimensional cobalt-organic framework nanosheets for high-performance electrocatalytic oxygen evolution

 

School of Chemistry and Chemical Engineering, Yangzhou University

     Ultrathin two-dimensional cobalt-organic framework (Co-MOF) nanosheets [Co2(OH)2BDC, BDC = 1,4-benzenedicarboxylate] with good catalytic activity for the oxygen evolution reaction were synthesized by a simple surfactant-assisted hydrothermal method. The resulting material shows a low overpotential of 263 mV at 10 mA cm-2 and a Tafel slope of 74 mV dec-1 in 1.0 M KOH. The morphology and properties of the material before and after electrocatalysis did not change significantly over a long period of time and maintained electrochemical stability in 12000 s. The unsaturated CoII active center on the surface of ultrathin two-dimensional cobalt-organic framework nanosheets enhances the oxygen evolution reaction performance. These results are significantly superior to most of the previously reported transition metal-organic framework or metal oxide electrocatalysts. We believe that the ultrathin two-dimensional metal-organic framework nanosheets synthesized by the simple process will be widely used in future energy conversion devices.

  

  

J. Mater. Chem. A2018, DOI: 10.1039/c8ta03128b; IF:9.93,SCI

链接: http://dx.doi.org/10.1039/C8TA03128B

Yuxia Xu, Bing Li, Shasha Zheng, Ping Wu, Jingyi Zhan, Huaiguo Xue, Qiang Xu, and Huan Pang*




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