Size-Dependent Effects of Ru Nanoparticles on Li-CO₂ Batteries
Date
2024
Authors
Zou, J.
Liang, G.
Yuwono, J.A.
Zhang, F.
Fan, Y.
Zhang, S.
Johannessen, B.
Sun, L.
Guo, Z.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
ACS Energy Letters, 2024; 9(10):5145-5155
Statement of Responsibility
Jinshuo Zou, Gemeng Liang, Jodie A. Yuwono, Fangli Zhang, Yameng Fan, Shilin Zhang, Bernt Johannessen, Liang Sun, and Zaiping Guo
Conference Name
Abstract
Li-CO₂ batteries capture and convert CO₂ into a valuable energy storage medium, promoting both energy storage and environmental sustainability. While Ru-based catalysts exhibit exceptional catalytic activity and are widely deployed in Li-CO₂ batteries, the Ru nanoparticle size effects on electrolysis remains underexplored. Herein, we synthesized Ru nanoparticles ranging from ∼1.1 to ∼7.4 nm to unveil the size-dependent activity in Li-CO₂ batteries. As Ru size decreases, the d-band center of Ru is identified upshifted toward the Fermi level, and the Gibbs energy change for the rate-determining step during charge is lowered. The binding energy of C=O and Li−O is notably reduced, confirming that a strong interaction between small Ru and Li₂CO₃ can destabilize Li₂CO₃ and facilitate its decomposition. Furthermore, small Ru nanoparticles can alleviate Li₂CO₃ accumulation on cathodes. This work provides insight and guidance for catalyst design and optimization in Li-CO₂ batteries, which can be extended to other battery systems involving solid product formation and decomposition.
School/Discipline
Dissertation Note
Provenance
Description
Letter.
Published: September 30, 2024
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Rights
© 2024 American Chemical Society