cation effect
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2022 ◽  
Author(s):  
Xiao-Xi Luo ◽  
Wen-Hao Li ◽  
Hao-Jie Liang ◽  
Hong-Xia Zhang ◽  
Kai-Di Du ◽  
...  

2021 ◽  
Author(s):  
Seung-Jae Shin ◽  
Hansol Choi ◽  
Stefan Ringe ◽  
Da Hye Won ◽  
Chang Hyuck Choi ◽  
...  

Converting carbon dioxide (CO2) into valuable products is one of the most important processes for a sustainable society. Especially, the electrochemical CO2 reduction reaction (CO2RR) offers an effective means, but its reaction mechanism is not yet fully understood. Here, we demonstrate that cation-coupled electron transfer (CCET) is a rate-determining step in the CO2RR to carbon monoxide. The first-principles-based multiscale simulation identifies a single cation that coordinates a CO2− intermediate adsorbed on Ag electrode. The CCET is experimentally verified by a collapse of the CO2RR polarization curves upon correcting Nernstianly for a bulk cation concentration. As further confirmation, a kinetic study shows that the CO2RR obeys first-order kinetics on a local cation concentration. Finally, this work unveils that the cation effect on CO2RR originates from the local colligative property, and further highlights the importance of ion-pairing tendency for electrochemical interface design to achieve high-performance CO2 electrolysis.


2021 ◽  
Author(s):  
Seung-Jae Shin ◽  
Hansol Choi ◽  
Stefan Ringe ◽  
Da Hye Won ◽  
Chang Hyuck Choi ◽  
...  

Abstract Converting carbon dioxide (CO2) into valuable products is one of the most important processes for a sustainable society. Especially, the electrochemical CO2 reduction reaction (CO2RR) offers an effective means, but its reaction mechanism is not yet fully understood. Here, we demonstrate that cation-coupled electron transfer (CCET) is a rate-determining step in the CO2RR to carbon monoxide. The first-principles-based multiscale simulation identifies a single cation that coordinates a CO2− intermediate adsorbed on Ag electrode. The CCET is experimentally verified by a collapse of the CO2RR polarization curves upon correcting Nernstianly for a bulk cation concentration. As further confirmation, a kinetic study shows that the CO2RR obeys first-order kinetics on a local cation concentration. Finally, this work unveils that the cation effect on CO2RR originates from the local colligative property, and further highlights the importance of ion-pairing tendency for electrochemical interface design to achieve high-performance CO2 electrolysis.


2021 ◽  
Vol MA2021-01 (23) ◽  
pp. 910-910
Author(s):  
Junhyuk Ahn ◽  
Yong Min Lee ◽  
Woosik Kim ◽  
Soong Ju Oh

2021 ◽  
Vol 102 (1) ◽  
pp. 75-82
Author(s):  
Junhyuk Ahn ◽  
Yong Min Lee ◽  
Woosik Kim ◽  
Soong Ju Oh

2021 ◽  
Vol 118 (10) ◽  
pp. 103902
Author(s):  
Yue Shu ◽  
George Omololu Odunmbaku ◽  
Yongjie He ◽  
Yongli Zhou ◽  
Hanlin Cheng ◽  
...  

Author(s):  
Jesús F. Ontiveros ◽  
Bing Hong ◽  
Kenji Aramaki ◽  
Christel Pierlot ◽  
Jean‐Marie Aubry ◽  
...  

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