A cathode for Li-ion batteries made of vanadium oxide on vertically aligned carbon nanotube arrays/graphene foam

Haifeng Jiang; Zengxi Wei; Xiaoyi Cai; Linfei Lai; Jianmin Ma; Wei Huang

doi:10.1016/j.cej.2018.10.223

A cathode for Li-ion batteries made of vanadium oxide on vertically aligned carbon nanotube arrays/graphene foam

Haifeng Jiang, Zengxi Wei, Xiaoyi Cai, Linfei Lai, Jianmin Ma, Wei Huang

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	1668-1676
Number of pages	9
Journal	Chemical Engineering Journal
Volume	359
DOIs	https://doi.org/10.1016/j.cej.2018.10.223
State	Published - 1 Mar 2019

Keywords

Hierarchical porous electrode
Li-ion batteries cathode
VO/CNTs composites
Vertically aligned CNTs

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10.1016/j.cej.2018.10.223

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title = "A cathode for Li-ion batteries made of vanadium oxide on vertically aligned carbon nanotube arrays/graphene foam",

abstract = "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.",

keywords = "Hierarchical porous electrode, Li-ion batteries cathode, VO/CNTs composites, Vertically aligned CNTs",

author = "Haifeng Jiang and Zengxi Wei and Xiaoyi Cai and Linfei Lai and Jianmin Ma and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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doi = "10.1016/j.cej.2018.10.223",

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T1 - A cathode for Li-ion batteries made of vanadium oxide on vertically aligned carbon nanotube arrays/graphene foam

AU - Jiang, Haifeng

AU - Wei, Zengxi

AU - Cai, Xiaoyi

AU - Lai, Linfei

AU - Ma, Jianmin

AU - Huang, Wei

PY - 2019/3/1

Y1 - 2019/3/1

N2 - 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.

AB - 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.

KW - Hierarchical porous electrode

KW - Li-ion batteries cathode

KW - VO/CNTs composites

KW - Vertically aligned CNTs

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DO - 10.1016/j.cej.2018.10.223

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VL - 359

SP - 1668

EP - 1676

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

A cathode for Li-ion batteries made of vanadium oxide on vertically aligned carbon nanotube arrays/graphene foam

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Keywords

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