Ant-Cave-Structured Nanopore-Embedded CoMn2O4 Microspheres with Stable Electrochemical Reaction for Li-Air Battery
- Authors
- Yun, Young Jun; Park, Hyemin; Kim, Jin-Kyu; Unithrattil, Sanjith; Huu, Ha Tran; Kim, Dong Wook; Lee, Sun Sook; Kang, Yongku; Im, Won Bin; Choi, Sungho
- Issue Date
- May-2020
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.167, no.8, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 167
- Number
- 8
- Start Page
- 1
- End Page
- 8
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1941
- DOI
- 10.1149/1945-7111/ab9188
- ISSN
- 0013-4651
- Abstract
- Herein, nanopore-embedded CoMn2O4 microspheres were successfully synthesized, and their electrochemical behavior as an anode for lithium-ion batteries (LIBs) and as a catalyst for oxygen-reduction/evolution reactions of lithium-air batteries (LABs) cathodes was investigated. The electrodes composed of specifically designed particles exhibited enhanced capacity retention with stable charge-transfer impedance change during the overall lithium conversion reactions as compared to the electrodes composed of conventional particulate nanoparticles. The LAB cathodes with the as-prepared porous compounds exhibit better reversibility with a similar to 10% higher oxygen-evolution reactions efficiency and stable capacity retention than those of the Ketjen black-only electrodes. We believe that these novel performance is achieved due to the rational design of the pore-embedded/interconnected CoMn2O4 nanoparticles, which mitigate the detrimental volume change during the repetitive Li+ reversible arrow LiOx reaction and facilitate effective lithium ion (for LIBs) and oxygen diffusion (for LABs) in the porous electrode.
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