期刊
CHEMICAL ENGINEERING JOURNAL
卷 359, 期 -, 页码 1668-1676出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2018.10.223
关键词
Hierarchical porous electrode; Li-ion batteries cathode; Vertically aligned CNTs; V2O5/CNTs composites
资金
- Natural Science Foundation of China [51502135, 51302079]
- Natural Science Foundation of Human Province [2017JJ1008]
A hierarchically structured free-standing V2O5/vertically aligned carbon nanotube/graphene foam (V2O5-VA-CNTs/GF) coated by PEDOT was designed. Instead of forming a thick coating layer around, the V2O5 nanobelts disperse uniformly among the CNTs forest without severe aggregations. The PEDOT-V2O5-VA-CNTs/GF delivered a reversible capacity of 296.8 mAh g(-1) at 1C, and has capacity retention of 113.3 mAh g(-1) at 5C after 1000 cycles. First principles calculations indicate the addition of VA-CNTs to V2O5 electrode could improve the electronic conductivity and facilitate Li-ion adsorption, which lead to the outstanding Li-ion storage and conversion behaviour.
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