Journal
ELECTROCHIMICA ACTA
Volume 264, Issue -, Pages 376-385Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.01.092
Keywords
Lithium-ion batteries; Anode; Co3O4; Mesoporosity; Perforated nanoparticle; Carbon nanotube
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Funding
- Institute for Information & communications Technology Promotion (IITP) - Korean government (MSIT) [2017-0-00044]
- NST (National Research Council of Science and Technology) of Korea [CAP-14-02-KITECH]
- Industrial Strategic Technology Development Program [10052774]
- World Premier Materials (WPM) Program - Ministry of Trade, Industry & Energy (MI) of Korea [10037890]
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A facile method for preparing mesoporous perforated Co3O4 nanoparticles with hollow channels and a thin carbon layer was newly designed and achieved with sacrificial carbon nanotube (CNT) templates. The threaded Co3O4 nanoparticles on the CNTs were fabricated through a hybridization process, and a subsequent calcination process produced mesoporous perforated Co3O4 nanoparticles. With a finely tuned calcination, CNTs were sacrificed to generate hollow channels in the Co3O4 nanoparticles and to provide a carbon source for the formation of a few nm-thick carbon layer on the surface of the Co3O4 nanoparticles simultaneously. The prepared mesoporous perforated Co3O4 nanoparticles with a robust electronic conductive layer enabled not only an enhanced electrochemical reactivity from the greatly increased contact area between the electrolyte and electrode but also a high electronic conductivity of the overall electrode so that excellent electrochemical performances (1115.1 mA h g(-1) after 100 cycles; 595.9 mA h g(-1) @ 5 degrees C rate) were successfully achieved in the anode application of a lithium-ion battery. (c) 2018 Elsevier Ltd. All rights reserved.
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