太阳能驱动Ni-N掺杂多孔碳高效电催化还原CO2为CO

doi:10.3866/PKU.DXHX201912044

大学化学 >> 2020, Vol. 35 >> Issue (4): 1-9.doi: 10.3866/PKU.DXHX201912044

所属专题：全国大学生化学实验创新设计竞赛

太阳能驱动Ni-N掺杂多孔碳高效电催化还原CO₂为CO

丁少松, 岳通, 王兴谱, 高家楠, 朱英()

北京航空航天大学化学学院, 北京 100083

收稿日期:2019-12-12 录用日期:2019-12-16 发布日期:2020-03-05
通讯作者: 朱英 E-mail:zhuying@buaa.edu.cn
基金资助:
国家自然科学基金(51672019);国家自然科学基金(51872013)

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()

School of Chemistry, Beihang University, Beijing 100083, R. P. China

Received:2019-12-12 Accepted:2019-12-16 Published:2020-03-05
Contact: Zhu Ying E-mail:zhuying@buaa.edu.cn

摘要/Abstract

摘要：

利用可再生能源将二氧化碳（CO₂）电催化还原为有价值的化学品和燃料，不仅可缓解温室效应，而且可实现碳资源的循环利用。以蛋白胨与盐形成的凝胶为原料，经高温热解后制备了用于电还原CO₂的Ni-N掺杂碳多孔催化剂。该催化剂表现出优异的电催化还原CO₂为CO的性能，在电压为-0.66 V（vs.RHE）下，CO的法拉第效率为92.0%，过电位为550 mV，还原电流密度为2.5 mA·cm^-2。该催化剂优异的CO₂的电催化活性归因于其存在的Ni-N活性位点和高度多孔的结构。此外，利用太阳能电池产生的电能，该催化剂可持续进行CO₂电催化还原为CO，为CO₂的资源化利用提供了有价值的参考。

关键词: Ni-N掺杂多孔碳, CO₂电还原, 太阳能, CO产物

Abstract:

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

MSC2000:

丁少松, 岳通, 王兴谱, 高家楠, 朱英. 太阳能驱动Ni-N掺杂多孔碳高效电催化还原CO₂为CO[J]. 大学化学, 2020, 35(4): 1-9.

Ding Shaosong, Yue Tong, Wang Xingpu, Gao Jianan, Zhu Ying. Ni-N Doped Porous Carbon for Electrocatalytic Reduction of CO₂ into CO Driven by Solar Energy[J]. University Chemistry, 2020, 35(4): 1-9.

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催化剂	电解液	工作电压	产物效率	参考文献
Ni-N掺杂多孔碳(本工作)	0.5 mol?L^?1 KHCO₃	?0.66 V vs. RHE	CO：92.0%
Ni SAs/N-C	0.5 mol?L^?1 KHCO₃	?1.00 V vs. RHE	CO：71.9%	Zhao et al. ^[28]
Hexagonal Zn	0.5 mol?L^?1 KHCO₃	?0.95 V vs. RHE	CO：85.4%	Won et al. ^[29]
AuNP-GNR	0.5 mol?L^?1 KHCO₃	?0.47 V vs. RHE	CO：87.0%	Rogers et al. ^[30]
COF-367-Co	0.5 mol?L^?1 KHCO₃	?0.67 V vs. RHE	CO：91.0%	Lin et al. ^[31]
Au cathode	0.5 mol?L^?1 KHCO₃	?0.68 V vs. RHE	CO：91.0%	Hori et al. ^[32]

太阳能驱动Ni-N掺杂多孔碳高效电催化还原CO₂为CO

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

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