Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10155796 | Journal of Materials Science & Technology | 2019 | 24 Pages |
Abstract
In this work, a novel flower-like cobalt-based metal organic frameworks (MOFs) self-assembled by Co2+ and nicotinic acid have been designed and synthesized. After a simple annealing treatment, Co3O4 nanoparticles in-situ decorating on nitrogen doped graphite carbon-sheet (Co3O4/NC) were obtained. The resultant Co3O4/NC hybrid with unique flower-like structure and ration combination of Co3O4 nanoparticles and nitrogen doped graphite carbon, endowing the hybrid with enhanced electrical conductivity, short ion diffusion pathways and rich porosity to the materials, which can largely alleviate the problems of Co3O4 such as inferior intrinsic electrical conductivity, sluggish ion kinetics and large volume change upon cycling. When evaluated as anode material for sodium-ion batteries (SIBs), the Co3O4/NC hybrid exhibits satisfied reversible capacity (213.9âmAh gâ1 after 100 cycles at 0.1âAâgâ1), excellent rate capability (145.4âmAhâgâ1 at 2âAâgâ1 and 130.1âmAhâgâ1 at 4âAâgâ1) and robust long-term cycling stability (120.1âmAhâgâ1 after 2000 cycles at 0.5âAâgâ1), showing great potential for high-performance SIBs.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Chemistry
Authors
Haifeng Xu, Guang Zhu, Baoming Hao,