In-situ preparation and unique electrochemical behavior of pore-embedding CoO/Co3O4 intermixed composite for Li+ rechargeable battery electrodes
- Title
- In-situ preparation and unique electrochemical behavior of pore-embedding CoO/Co3O4 intermixed composite for Li+ rechargeable battery electrodes
- Author
- 임원빈
- Keywords
- Lithium battery; Cobalt oxide; Composite electrode
- Issue Date
- 2018-02
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF POWER SOURCES, v. 378, page. 562-570
- Abstract
- Electrochemically active CoO/Co3O4 co-existing microspheres with morphology-inherited porous particles is successfully synthesized via a simple solvothermal method. The as-prepared intermixed composite undergoes a monoxide CoO-preferred conversion reaction with an extremely enhanced capacity retention, similar to 905 mA h g(-1) after 250 cycles for discharge state, which is 1.6 times higher than the conventional CoOx-based anodes. Moreover, stable catalytic behavior of the electrocatalysts in Li-air cathodes of the given composites is also demonstrated. We believe that the extraordinarily enhanced electrode performance might be due to the novel pore-tempered microspheres packed with double electrochemically active centers of the CoO/Co3O4 composite effectively confine the detrimental volume exchange during the reversible cyclic reactions as well as the preserved multiple reactive sites for a reversible Li+ reversible arrow LiOx reaction, which is advantageous for advanced Li rechargeable battery.
- URI
- https://www.sciencedirect.com/science/article/abs/pii/S0378775317316348?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/117375
- ISSN
- 0378-7753; 1873-2755
- DOI
- 10.1016/j.jpowsour.2017.12.032
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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