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Editorial
. 2024 Dec 26;17(1):94.
doi: 10.1007/s40820-024-01595-y.

NiNC Catalysts in CO2-to-CO Electrolysis

Hao Zhang  1   2 , Menghui Qi  3 , Yong Wang  4
Affiliations
Editorial

NiNC Catalysts in CO2-to-CO Electrolysis

Hao Zhang et al. Nanomicro Lett. .

Abstract

CO2-to-CO electrolyzer technology converts carbon dioxide into carbon monoxide using electrochemical methods, offering significant environmental and energy benefits by aiding in greenhouse gas mitigation and promoting a carbon circular economy. Recent study by Strasser et al. in Nature Chemical Engineering presents a high-performance CO2-to-CO electrolyzer utilizing a NiNC catalyst with nearly 100% faradaic efficiency, employing innovative diagnostic tools like the carbon crossover coefficient (CCC) to address transport-related failures and optimize overall efficiency. Strasser's research demonstrates the potential of NiNC catalysts, particularly NiNC-IMI, for efficient CO production in CO2-to-CO electrolyzers, highlighting their high selectivity and performance. However, challenges such as localized CO2 depletion and mass transport limitations underscore the need for further optimization and development of diagnostic tools like CCC. Strategies for optimizing catalyst structure and operational parameters offer avenues for enhancing the performance and reliability of electrochemical CO2 reduction catalysts.

Keywords: CO2-to-CO electrolyzer; Carbon crossover coefficient (CCC); Faradaic efficiency; Mesoporous structures; NiNC catalysts.

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Conflict of interest statement

Declarations. Conflict of Interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Fig. 1
Fig. 1
a CO2 valorization using coupled ‘tandem’ electrolyzer cells. b Cell diagnosis using the CCC and FECO. FECO versus CCC plots yield distinct operating reaction transport regimes (red (I), yellow (II) and green (III)) to diagnose the mass transfer limitations. Reprinted with permission from Ref. [3]. Copyright 2024, Springer Nature Group. (Color figure online)
See this image and copyright information in PMC

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