1. Coordination polymer derived cobalt embedded in nitrogen-doped carbon nanotubes for efficient electrocatalysis of oxygen evolution reaction.
- Author
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Cong, Jingkun, Li, Changqing, Zhao, Tao, Wu, Jin, Zhang, Rui, Ren, Wenjing, Wang, Shunli, Gao, Junkuo, Liu, Yi, and Yao, Juming
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CARBON nanotubes , *COORDINATION polymers , *MELAMINE , *COBALT , *FABRICATION (Manufacturing) , *X-ray diffraction , *CATALYTIC activity - Abstract
In this paper, we reported the fabrication of Co-embedded nitrogen-doped carbon nanotube (Co-NCNT) by using Co-melamine coordination polymer (CP) as precursor. The sample was well characterized via SEM, TEM, XRD, XPS and BET methods. The Co-NCNT shows excellent and stable catalytic performance for OER. The overpotential of Co-NCNT at 10 mA cm -2 is 370 mV (vs RHE). The current density of Co-NCNT could reach 100 mA cm -2 at overpotential of 520 mV, which showed much better performance than RuO 2 , while the largest current density of RuO 2 could reach is only 44 mA cm -2 . The Tafel slope of Co-NCNT is 56 mV dec -1 , which is smaller than that of commercial RuO 2 (58 mV dec -1 ). The results indicate that metal-melamine based CPs or MOFs can be promising precursors for the preparation of efficient metal-embedded nitrogen-doped carbon materials for electrocatalysis. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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