1. Insight into the Superior Lithium Storage Properties of Ultrafine CoO Nanoparticles Confined in a 3 D Bimodal Ordered Mesoporous Carbon CMK‐9 Anode
- Author
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Yu Hao Zeng, Po-Hung Chen, Cheng Wei Lin, Yung Chin Yang, Diganta Saikia, Hsien Ming Kao, Yuan Hung Lai, and Juti Rani Deka
- Subjects
Materials science ,Nanocomposite ,General Chemical Engineering ,Sodium-ion battery ,chemistry.chemical_element ,Nanoparticle ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Lithium-ion battery ,0104 chemical sciences ,Anode ,General Energy ,chemistry ,Chemical engineering ,Environmental Chemistry ,General Materials Science ,Lithium ,0210 nano-technology ,Mesoporous material ,Current density - Abstract
Ultrafine CoO particles immobilized into the mesopores of three-dimensional cubic bimodal ordered mesoporous carbon CMK-9 is successfully prepared by using a combination of nanocasting and wet-impregnation methods. It is found that the cubic bimodal interconnected mesoporous framework of CMK-9 plays a crucial role in achieving the excellent electrochemical performances by assisting the rapid mass and charge transfer. Among the prepared nanocomposites, CoO(10)@CMK-9 delivers a discharge capacity of 830 mAh g-1 after 200 cycles at a current density of 100 mA g-1 in lithium-ion batteries. At a higher current density of 1000 mA g-1 , the anode presents an outstanding discharge capacity of 636 mAh g-1 after 200 cycles. In sodium-ion batteries, the anode provides a discharge capacity of 296 mAh g-1 after 250 cycles at a current density of 100 mA g-1 . The remarkable performances of CoO(10)@CMK-9 demonstrate the promising potentials of the nanocomposite as the anode for rechargeable batteries.
- Published
- 2020
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