A compromise of electrochemical performances of Li3V 2(PO4)3/C upon cycling within a suitable potential range

Wenhui Wang; Jiaolong Zhang; Yue Lin; Zheng Jia; Changsong Dai

doi:10.1016/j.electacta.2013.11.074

A compromise of electrochemical performances of Li₃V ₂(PO₄)₃/C upon cycling within a suitable potential range

Wenhui Wang
, Jiaolong Zhang
, Yue Lin
, Zheng Jia^*
, Changsong Dai

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Chinese University of Hong Kong

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

17 Scopus citations

Abstract

The structural evolution of Li₃V₂(PO ₄)₃/C upon cycling in different potential ranges was studied via XRD. The results reveal that the repeated charge/discharge processes would cause the loss of crystallinity and irreversible expansion of unit cell volume, both of which are related to the applied upper limit of potential. The highest degree of the crystallinity loss and irreversible expansion of unit cell volume of the Li₃V₂(PO₄)₃/C sample cycled in the range of 3.0-4.8 V is considered to be partially responsible for the worst cycling performance among the three operating potential regions. On the contrary, no marked expansion of unit cell volume is observed when the upper limit of potential is extended from 4.3 V to 4.6 V. Accordingly, the Li ₃V₂(PO₄)₃/C sample cycled in 3.0-4.6 V delivers extra 17-37 mAh g^-1 specific capacity over that of 3.0-4.3 V with reasonable cycling stability. Therefore, the potential range of 3.0-4.6 V would be the best operating potential region for the practical applications of Li₃V₂(PO₄)₃.

Original language	English
Pages (from-to)	490-494
Number of pages	5
Journal	Electrochimica Acta
Volume	116
DOIs	https://doi.org/10.1016/j.electacta.2013.11.074
State	Published - 10 Jan 2014
Externally published	Yes

Keywords

Crystalline structural evolution
Cycling performance
Lithium vanadium phosphate
Operating potential region
Specific capacity

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10.1016/j.electacta.2013.11.074

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title = "A compromise of electrochemical performances of Li3V 2(PO4)3/C upon cycling within a suitable potential range",

abstract = "The structural evolution of Li3V2(PO 4)3/C upon cycling in different potential ranges was studied via XRD. The results reveal that the repeated charge/discharge processes would cause the loss of crystallinity and irreversible expansion of unit cell volume, both of which are related to the applied upper limit of potential. The highest degree of the crystallinity loss and irreversible expansion of unit cell volume of the Li3V2(PO4)3/C sample cycled in the range of 3.0-4.8 V is considered to be partially responsible for the worst cycling performance among the three operating potential regions. On the contrary, no marked expansion of unit cell volume is observed when the upper limit of potential is extended from 4.3 V to 4.6 V. Accordingly, the Li 3V2(PO4)3/C sample cycled in 3.0-4.6 V delivers extra 17-37 mAh g-1 specific capacity over that of 3.0-4.3 V with reasonable cycling stability. Therefore, the potential range of 3.0-4.6 V would be the best operating potential region for the practical applications of Li3V2(PO4)3.",

keywords = "Crystalline structural evolution, Cycling performance, Lithium vanadium phosphate, Operating potential region, Specific capacity",

author = "Wenhui Wang and Jiaolong Zhang and Yue Lin and Zheng Jia and Changsong Dai",

year = "2014",

month = jan,

day = "10",

doi = "10.1016/j.electacta.2013.11.074",

language = "英语",

volume = "116",

pages = "490--494",

journal = "Electrochimica Acta",

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T1 - A compromise of electrochemical performances of Li3V 2(PO4)3/C upon cycling within a suitable potential range

AU - Wang, Wenhui

AU - Zhang, Jiaolong

AU - Lin, Yue

AU - Jia, Zheng

AU - Dai, Changsong

PY - 2014/1/10

Y1 - 2014/1/10

N2 - The structural evolution of Li3V2(PO 4)3/C upon cycling in different potential ranges was studied via XRD. The results reveal that the repeated charge/discharge processes would cause the loss of crystallinity and irreversible expansion of unit cell volume, both of which are related to the applied upper limit of potential. The highest degree of the crystallinity loss and irreversible expansion of unit cell volume of the Li3V2(PO4)3/C sample cycled in the range of 3.0-4.8 V is considered to be partially responsible for the worst cycling performance among the three operating potential regions. On the contrary, no marked expansion of unit cell volume is observed when the upper limit of potential is extended from 4.3 V to 4.6 V. Accordingly, the Li 3V2(PO4)3/C sample cycled in 3.0-4.6 V delivers extra 17-37 mAh g-1 specific capacity over that of 3.0-4.3 V with reasonable cycling stability. Therefore, the potential range of 3.0-4.6 V would be the best operating potential region for the practical applications of Li3V2(PO4)3.

AB - The structural evolution of Li3V2(PO 4)3/C upon cycling in different potential ranges was studied via XRD. The results reveal that the repeated charge/discharge processes would cause the loss of crystallinity and irreversible expansion of unit cell volume, both of which are related to the applied upper limit of potential. The highest degree of the crystallinity loss and irreversible expansion of unit cell volume of the Li3V2(PO4)3/C sample cycled in the range of 3.0-4.8 V is considered to be partially responsible for the worst cycling performance among the three operating potential regions. On the contrary, no marked expansion of unit cell volume is observed when the upper limit of potential is extended from 4.3 V to 4.6 V. Accordingly, the Li 3V2(PO4)3/C sample cycled in 3.0-4.6 V delivers extra 17-37 mAh g-1 specific capacity over that of 3.0-4.3 V with reasonable cycling stability. Therefore, the potential range of 3.0-4.6 V would be the best operating potential region for the practical applications of Li3V2(PO4)3.

KW - Crystalline structural evolution

KW - Cycling performance

KW - Lithium vanadium phosphate

KW - Operating potential region

KW - Specific capacity

UR - https://www.scopus.com/pages/publications/84889954645

U2 - 10.1016/j.electacta.2013.11.074

DO - 10.1016/j.electacta.2013.11.074

M3 - 文章

AN - SCOPUS:84889954645

SN - 0013-4686

VL - 116

SP - 490

EP - 494

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

A compromise of electrochemical performances of Li₃V ₂(PO₄)₃/C upon cycling within a suitable potential range

Abstract

Keywords

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