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Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries

Lithium vanadium phosphate (Li(3)V(2)(PO(4))(3), LVP)/reduced graphene oxide (rGO) composite is prepared with a rheological method followed by heat treatment. The size and interface of LVP particles, two important merits for a cathode material, can be effectively tuned by the rGO in the composite, w...

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Autores principales: Zhu, Xianjun, Yan, Zan, Wu, Wenyan, Zeng, Wencong, Du, Yuanxin, Zhong, Yu, Zhai, Haidie, Ji, Hengxing, Zhu, Yanwu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5385827/
https://www.ncbi.nlm.nih.gov/pubmed/25169810
http://dx.doi.org/10.1038/srep05768
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author Zhu, Xianjun
Yan, Zan
Wu, Wenyan
Zeng, Wencong
Du, Yuanxin
Zhong, Yu
Zhai, Haidie
Ji, Hengxing
Zhu, Yanwu
author_facet Zhu, Xianjun
Yan, Zan
Wu, Wenyan
Zeng, Wencong
Du, Yuanxin
Zhong, Yu
Zhai, Haidie
Ji, Hengxing
Zhu, Yanwu
author_sort Zhu, Xianjun
collection PubMed
description Lithium vanadium phosphate (Li(3)V(2)(PO(4))(3), LVP)/reduced graphene oxide (rGO) composite is prepared with a rheological method followed by heat treatment. The size and interface of LVP particles, two important merits for a cathode material, can be effectively tuned by the rGO in the composite, which plays as surfactant to assist sol-gelation and simultaneously as conductive carbon coating. As a consequence, the composite with 7.0 ± 0.4 wt.% rGO shows a capacity of 141.6 mAh g(−1) at 0.075 C, and a rate capacity of 119.0 mAh g(−1) at 15 C with respect to the mass of LVP/rGO composite, and an excellent cycling stability that retains 98.7% of the initial discharge capacity after 50 cycles. The improved electrochemical performance is attributed to the well-controlled rGO content that yields synergic effects between LVP and rGO. Not only do the rGO sheets reduce the size of LVP particles that favor the Li(+) ion migration and the electron transfer during charging and discharging, but also contribute to the reversible lithium ions storage.
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spelling pubmed-53858272017-04-14 Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries Zhu, Xianjun Yan, Zan Wu, Wenyan Zeng, Wencong Du, Yuanxin Zhong, Yu Zhai, Haidie Ji, Hengxing Zhu, Yanwu Sci Rep Article Lithium vanadium phosphate (Li(3)V(2)(PO(4))(3), LVP)/reduced graphene oxide (rGO) composite is prepared with a rheological method followed by heat treatment. The size and interface of LVP particles, two important merits for a cathode material, can be effectively tuned by the rGO in the composite, which plays as surfactant to assist sol-gelation and simultaneously as conductive carbon coating. As a consequence, the composite with 7.0 ± 0.4 wt.% rGO shows a capacity of 141.6 mAh g(−1) at 0.075 C, and a rate capacity of 119.0 mAh g(−1) at 15 C with respect to the mass of LVP/rGO composite, and an excellent cycling stability that retains 98.7% of the initial discharge capacity after 50 cycles. The improved electrochemical performance is attributed to the well-controlled rGO content that yields synergic effects between LVP and rGO. Not only do the rGO sheets reduce the size of LVP particles that favor the Li(+) ion migration and the electron transfer during charging and discharging, but also contribute to the reversible lithium ions storage. Nature Publishing Group 2014-08-29 /pmc/articles/PMC5385827/ /pubmed/25169810 http://dx.doi.org/10.1038/srep05768 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Zhu, Xianjun
Yan, Zan
Wu, Wenyan
Zeng, Wencong
Du, Yuanxin
Zhong, Yu
Zhai, Haidie
Ji, Hengxing
Zhu, Yanwu
Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries
title Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries
title_full Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries
title_fullStr Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries
title_full_unstemmed Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries
title_short Manipulating Size of Li(3)V(2)(PO(4))(3) with Reduced Graphene Oxide: towards High-Performance Composite Cathode for Lithium Ion Batteries
title_sort manipulating size of li(3)v(2)(po(4))(3) with reduced graphene oxide: towards high-performance composite cathode for lithium ion batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5385827/
https://www.ncbi.nlm.nih.gov/pubmed/25169810
http://dx.doi.org/10.1038/srep05768
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