Research trends on minimizing the size of noble metal catalysts for Li-CO2 batteries: From nanoparticle to single atom
- Authors
- Rho, Yeo-Jin; Yoo, Yoon Jeong; Ryu, Won-Hee
- Issue Date
- Mar-2023
- Publisher
- 한국화학공학회
- Keywords
- Carbon Capture and Storage; Li-CO2 Battery; Nanoparticle; Noble Metal; Single Atom Catalyst
- Citation
- Korean Journal of Chemical Engineering, v.40, no.3, pp 461 - 472
- Pages
- 12
- Journal Title
- Korean Journal of Chemical Engineering
- Volume
- 40
- Number
- 3
- Start Page
- 461
- End Page
- 472
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/151956
- DOI
- 10.1007/s11814-022-1309-7
- ISSN
- 0256-1115
1975-7220
- Abstract
- Li-CO2 batteries involve a spontaneous conversion reaction by injecting CO2 into a cathode, and reversibly store energy without additional energy input through a charging and discharging process, thereby achieving carbon neutrality. Noble metal-based electrocatalysts have been actively considered to efficiently facilitate the Li-CO2 reaction with reduced overvoltage, yet the use of expensive noble metal catalysts is a barrier to developing this type of Li-CO2 battery. Here, the importance of minimizing the size of noble metal particle-based catalysts for Li-CO2 batteries is reviewed and emphasized. Comparisons of the performance of Li-CO2 cells with noble metal catalysts, such as Ru and Ir, showed that overpotential is lower when particle sizes are reduced to the single atom-scale. This indicates that the smaller the particle-to-atomic scale, the greater the catalytic activity. Recent diverse studies based on nano- or atomic-scale Ru and Ir catalysts affecting catalytic activities of the Li-CO2 cell reaction are introduced. Other single atom catalyst candidates are also suggested for Li-CO2 battery applications. © 2023, The Korean Institute of Chemical Engineers.
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