University Chemistry ›› 2020, Vol. 35 ›› Issue (4): 1-9.doi: 10.3866/PKU.DXHX201912044

Special Issue: 全国大学生化学实验创新设计竞赛

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Ni-N Doped Porous Carbon for Electrocatalytic Reduction of CO2 into CO Driven by Solar Energy

Ding Shaosong, Yue Tong, Wang Xingpu, Gao Jianan, Zhu Ying()   

  • Received:2019-12-12 Accepted:2019-12-16 Published:2020-03-05
  • Contact: Zhu Ying


The electroreduction of CO2 into value-added chemicals and fuels has garnered a broad interest by using renewable clean energy, due to both alleviating global warming and completing the carbon cycle. Herein, a high-performance Ni-N doped porous carbon catalyst was prepared through pyrolysis of hydrogen containing peptone, NiCl2, and NaCl made by a freeze dry method. The Ni-N-doped porous carbon catalyst displayed an excellent performance of CO2 electroreduction with a Faraday efficiency of 92.0% at -0.66 V (vs. RHE), 550 mV overpotential, and 2.5 mA·cm-2 current density. The catalytic performances were attributed to the Ni-N active sites and porous structures. In addition, CO2 electroreduction to CO was performed continuously by using solar energy, which may provide a valuable reference for carbon cycle in future.

Key words: Ni-N doped porous carbon, CO2 electroreduction, Solar energy, CO product


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