Insight into the Superior Lithium Storage Properties of Ultrafine CoO Nanoparticles Confined in a 3 D Bimodal Ordered Mesoporous Carbon CMK‐9 Anode. Issue 11 (21st April 2020)

• Record Type: Journal Article
• Authors: Saikia, Diganta; Deka, Juti Rani; Lin, Cheng‐Wei; Lai, Yuan‐Hung; Zeng, Yu‐Hao; Chen, Po‐Hung; Kao, Hsien‐Ming; Yang, Yung‐Chin
• Is Part Of: ChemSusChem. Volume 13:Issue 11(2020)
• Page Start: 2952
• Page End: 2965
• Publication Date: 2020-04-21
• Subjects: cobalt oxide -- lithium-ion batteries -- nanocomposites -- ordered mesoporous carbon -- sodium-ion batteries; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.202000009
• Languages: English
• ISSNs: 1864-5631

Abstract

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. Abstract : Confined in carbon : CoO(10)@CMK‐9 delivers excellent discharge capacities of 830 and 636 mAh g −1 at current densities of 100 and 1000 mA g −1, respectively, after 200 cycles in a lithium‐ion battery. In a sodium‐ion battery, it delivers a discharge capacity of 296 mA h g ‐1 after 250 cycles at a current density of 100 mA g −1 . The unique 3D bimodal ordered mesoporous structure of CMK‐9, pseudocapacitance, and diffusion processes have roles in the lithium/sodium‐ion storage.