Progress and Perspectives of Electrochemical CO2 Reduction on Copper in Aqueous Electrolyte
Stephanie A. Nitopi,Erlend Bertheussen,Søren Bertelsen Scott,Xinyan Liu,Albert K. Engstfeld,Albert K. Engstfeld,Sebastian Horch,Brian Seger,Ifan E. L. Stephens,Ifan E. L. Stephens,Karen Chan,Karen Chan,Christopher Hahn,Christopher Hahn,Jens K. Nørskov,Jens K. Nørskov,Jens K. Nørskov,Thomas F. Jaramillo,Thomas F. Jaramillo,Ib Chorkendorff +19 more
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TLDR
A broad and historical view of different aspects and their complex interplay in CO2R catalysis on Cu is taken, with the purpose of providing new insights, critical evaluations, and guidance to the field with regard to research directions and best practices.Abstract:
To date, copper is the only heterogeneous catalyst that has shown a propensity to produce valuable hydrocarbons and alcohols, such as ethylene and ethanol, from electrochemical CO2 reduction (CO2R). There are variety of factors that impact CO2R activity and selectivity, including the catalyst surface structure, morphology, composition, the choice of electrolyte ions and pH, and the electrochemical cell design. Many of these factors are often intertwined, which can complicate catalyst discovery and design efforts. Here we take a broad and historical view of these different aspects and their complex interplay in CO2R catalysis on Cu, with the purpose of providing new insights, critical evaluations, and guidance to the field with regard to research directions and best practices. First, we describe the various experimental probes and complementary theoretical methods that have been used to discern the mechanisms by which products are formed, and next we present our current understanding of the complex reaction networks for CO2R on Cu. We then analyze two key methods that have been used in attempts to alter the activity and selectivity of Cu: nanostructuring and the formation of bimetallic electrodes. Finally, we offer some perspectives on the future outlook for electrochemical CO2R.read more
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Self-generated Ni nanoparticles/LaFeO3 heterogeneous oxygen carrier for robust CO2 utilization under a cyclic redox scheme
Xiangbiao Liao,Xiangbiao Liao,Yanhui Long,Yanhui Long,Yan Chen,Yan Chen,Yan Chen,Amirali Zangiabadi,Hua Wang,Qinggang Liu,Kongzhai Li,Xi Chen,Xi Chen,Xi Chen +13 more
TL;DR: In this article, a cyclic redox scheme with a self-generated Ni nanoparticles/LaFeO3 heterogeneous structure was proposed to efficiently utilize CO2 in a low temperature of 800℃, where the Ni 0.05 Fe 0.95 O 3 − δ exhibited stable and superior performance.
Journal ArticleDOI
Reconstructing two-dimensional defects in CuO nanowires for efficient CO2 electroreduction to ethylene
TL;DR: In this article, in situ reconstructed Cu two-dimensional (2D) defects in CuO nanowires during CO2RR lead to significantly enhanced activity and selectivity of C2H4 compared to the CuO nanoplatelets.
Journal ArticleDOI
CO2 electroreduction to multicarbon products in strongly acidic electrolyte via synergistically modulating the local microenvironment
Zesong Ma,Zhi-lin Yang,Wenchuan Lai,Qiyou Wang,Yan-xin Qiao,Haolan Tao,Cheng Lian,Mingyan Liu,Chao Ma,Anlian Pan,Hongwen Huang +10 more
TL;DR: In this paper , the authors demonstrate CO2 electroreduction in strongly acidic electrolyte (pH ≤ 1) on electrochemically reduced porous Cu nanosheets by combining the confinement effect and cation effect to synergistically modulate the local microenvironment.
Journal ArticleDOI
Limitations of identical location SEM as a method of degradation studies on surfactant capped nanoparticle electrocatalysts
Yuhui Hou,Noémi Kovács,Noémi Kovács,Heng Xu,Changzhe Sun,Rolf Erni,María de Jesús Gálvez-Vázquez,Alain Rieder,Huifang Hu,Ying Kong,Menglong Liu,Benjamin J. Wiley,Soma Vesztergom,Soma Vesztergom,Peter Broekmann +14 more
TL;DR: In this article, an important limitation of IL-SEM is highlighted: extreme care is necessary when applying this method for catalyst degradation studies, especially in case of nanoparticles with surface-adsorbed capping agents.
Journal ArticleDOI
Surface characterization of copper electrocatalysts by lead underpotential deposition
TL;DR: In this paper, a polycrystalline Cu electrode was modified by applying different electrochemical pre-treatments and its surface ordering was tested by Pb underpotential deposition (UPD) on well-defined Cu electrode surfaces in presence of chloride.
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