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Ant-Cave-Structured Nanopore-Embedded CoMn2O4 Microspheres with Stable Electrochemical Reaction for Li-Air Battery

Title
Ant-Cave-Structured Nanopore-Embedded CoMn2O4 Microspheres with Stable Electrochemical Reaction for Li-Air Battery
Author
임원빈
Keywords
OXYGEN REDUCTION; CARBON ELECTRODE; ANODE MATERIALS; LITHIUM; CATHODE; PERFORMANCE; ELECTROCATALYSTS; STORAGE; NANOPARTICLES; EVOLUTION
Issue Date
2020-05
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v. 167, no. 8, article no. 080537
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.
URI
https://iopscience.iop.org/article/10.1149/1945-7111/ab9188https://repository.hanyang.ac.kr/handle/20.500.11754/166321
ISSN
1945-7111; 0013-4651
DOI
10.1149/1945-7111/ab9188
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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