Saikia Diganta, Deka Juti Rani, Lin Cheng-Wei, Lai Yuan-Hung, Zeng Yu-Hao, Chen Po-Hung, Kao Hsien-Ming, Yang Yung-Chin
Department of Chemistry, National Central University, Chung-Li, 32054, Taiwan, R.O.C.
Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, 106, Taiwan, R.O.C.
ChemSusChem. 2020 Jun 8;13(11):2952-2965. doi: 10.1002/cssc.202000009. Epub 2020 Apr 21.
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 after 200 cycles at a current density of 100 mA g in lithium-ion batteries. At a higher current density of 1000 mA g , the anode presents an outstanding discharge capacity of 636 mAh g after 200 cycles. In sodium-ion batteries, the anode provides a discharge capacity of 296 mAh g after 250 cycles at a current density of 100 mA g . The remarkable performances of CoO(10)@CMK-9 demonstrate the promising potentials of the nanocomposite as the anode for rechargeable batteries.
通过纳米铸造和湿浸渍方法相结合，成功制备了负载于三维立方双峰有序介孔碳CMK - 9介孔中的超细CoO颗粒。研究发现，CMK - 9的立方双峰互连介孔框架通过协助快速的质量和电荷转移，在实现优异的电化学性能方面起着关键作用。在所制备的纳米复合材料中，CoO(10)@CMK - 9在锂离子电池中，于100 mA g的电流密度下循环200次后，放电容量为830 mAh g。在1000 mA g的更高电流密度下，该阳极在200次循环后呈现出636 mAh g的出色放电容量。在钠离子电池中，该阳极在100 mA g的电流密度下循环250次后，放电容量为296 mAh g。CoO(10)@CMK - 9的卓越性能证明了该纳米复合材料作为可充电电池阳极具有广阔的应用前景。
