journal article·2018-11-07

Gas Phase Electrolysis of Carbon Dioxide to Carbon Monoxide Using Nickel Nitride as the Carbon Enrichment Catalyst

Pengfei Hou, Xiuping Wang, Zhuo Wang, Peng Kang

ACS Applied Materials & Interfaces· Volume 10· Issue 44
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Abstract

Nickel nitride was employed as the carbon enrichment electrocatalyst to reduce CO2 both in the aqueous phase and at the gas–solid interface. In an aqueous electrolyte, the CO Faradaic efficiency reached 85.7% at −0.90 V versus reversible hydrogen electrode with a partial current density of 6.3 mA cm–2. When gaseous CO2 was used as a reactant in a flow cell, the CO Faradaic efficiency increased to 92.5% and current density reached 23.3 mA cm–2. By contrast, metallic Ni and NiO generated predominantly H2. The increased amount of strong base sites in the Ni3N catalyst could enrich CO2 at the catalyst surface, and the utilization of gas phase electrolysis, has cooperatively enhanced reactivity.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Carbon dioxide utilization in catalysis · Ionic liquids properties and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China

University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China

Carbon Energy Technology Co. Ltd., Yancun Industrial Park, Fangshan, Beijing 102412, China

School of Chemical Engineering and Technology, Tianjin University, 135 Yaguan Rd, Tianjin 300350, China

Funding

Ministry of Science and Technology of the People's Republic of China · Chinese Academy of Sciences

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