Designing the nano-scale architecture of the air electrode for high-performance and robust reversible solid oxide cellsopen access
- Authors
- Rehman, Saeed Ur; Hassan, Muhammad Haseeb; Kim, Hye-Sung; Song, Rak-Hyun; Lim, Tak-Hyoung; Hong, Jong-Eun; Joh, Dong-Woo; Park, Seok-Joo; Lee, Jong-Won; Lee, Seung-Bok
- Issue Date
- Sep-2023
- Publisher
- Elsevier B.V.
- Keywords
- Air electrode; Electrolysis; Green hydrogen; Nanofabrication; Solid oxide cell
- Citation
- Applied Catalysis B: Environmental, v.333, pp.1 - 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Catalysis B: Environmental
- Volume
- 333
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/192849
- DOI
- 10.1016/j.apcatb.2023.122784
- ISSN
- 0926-3373
- Abstract
- Herein, an innovative La0.6Sr0.4CoO3 (LSC) nanostructured air electrode, having superior catalytic activity and exceptional robustness against critical interfacial delamination-induced degradation, is reported. A ∼50 nm thin LSC air electrode decorated onto a porosity graded Gd0.1Ce0.9O2 backbone via ultrasonic-assisted infiltration showed significantly flourished ORR and OER kinetics with prolific electrochemical performance compared to the cell with conventional LSC air electrode. The SOC showed maximum power density of 2.24 W cm−2 in the fuel cell mode and maximum current density of 4.57 A cm−2 at an operating voltage of 1.6 V in the electrolysis mode at 750 °C. Results of the reversible cycling and galvanostatic stability tests indicate excellent durability, which is attributed to the elimination of detrimental O2 pressure evolved at the air electrode/electrolyte interface. Sited among the highest performances till date, this study provides a realization of a tremendously durable SOC design for the production of green hydrogen and electricity.
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