In-situ preparation and unique electrochemical behavior of pore-embedding CoO/Co₃O₄ intermixed composite for Li⁺ rechargeable battery electrodesIn-situ preparation and unique electrochemical behavior of pore-embedding CoO/Co3O4 intermixed composite for Li+ rechargeable battery electrodes
- Other Titles
- In-situ preparation and unique electrochemical behavior of pore-embedding CoO/Co3O4 intermixed composite for Li+ rechargeable battery electrodes
- Authors
- Kim, Jin Kyu; Ju, Ji Young; Choi, Seul Ki; Unithrattil, Sanjith; Lee, Sun Sook; Kang, Yongku; Kim, Yongseon; Im, Won Bin; Choi, Sungho
- Issue Date
- Feb-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Lithium battery; Cobalt oxide; Composite electrode
- Citation
- JOURNAL OF POWER SOURCES, v.378, pp.562 - 570
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 378
- Start Page
- 562
- End Page
- 570
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/17766
- DOI
- 10.1016/j.jpowsour.2017.12.032
- ISSN
- 0378-7753
- 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.
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