A comparative structural and electrochemical study of monoclinic Li 3V2(PO4)3/C and rhombohedral Li 2.5Na0.5V(2-2x/3)Nix(PO 4)3/C

Wenhui Wang; Zhenyu Chen; Jiaolong Zhang; Changsong Dai; Jiajie Li; Dalong Ji

doi:10.1016/j.electacta.2013.04.066

A comparative structural and electrochemical study of monoclinic Li ₃V₂(PO₄)₃/C and rhombohedral Li _2.5Na_0.5V_(2-2x/3)Ni_x(PO ₄)₃/C

Wenhui Wang
, Zhenyu Chen
, Jiaolong Zhang
, Changsong Dai^*
, Jiajie Li
, Dalong Ji

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology

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

26 Scopus citations

Abstract

In order to synthesize pure derivative of rhombohedral Li₃V ₂(PO₄)₃ (LVP), lithium-ion batteries materials Li_2.5Na_0.5V_(2-2x/3)Ni_x(PO ₄)₃/C (x = 0.03, 0.06, 0.09) and its control, monoclinic Li₃V₂(PO₄)₃/C (LVP/C), were prepared by sol-gel method. The samples were investigated by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM), Raman spectroscopy, and electrochemical methods. The XRD patterns of Li_2.5Na_0.5V_(2-2x/3)Ni _x(PO₄)₃/C are in good agreement with that of rhombohedral LVP, which indicates that the Na⁺-Ni²⁺ composite doping can change the structure of monoclinic LVP. All the composite doping samples displayed a single flat plateau at 3.7 V in the charge/discharge voltage profile, which is caused by transformation of multi-phase mechanism to single-phase mechanism. For Li_2.5Na_0.5V _1.98Ni_0.03(PO₄)₃/C, a specific discharge capacity of 108 mAh g^-1 was achieved at a 0.5°C charge rate and a 1 C discharge rate, and a 99.0% retention rate of the initial capacity was obtained after 50 cycles.

Original language	English
Pages (from-to)	259-265
Number of pages	7
Journal	Electrochimica Acta
Volume	103
DOIs	https://doi.org/10.1016/j.electacta.2013.04.066
State	Published - 2013
Externally published	Yes

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Cathode material
Crystal structure
Lithium vanadium phosphate
Lithium-ion battery
Sol-gel preparation

Access to Document

10.1016/j.electacta.2013.04.066

Cite this

@article{d74390c0ad924cb2a6da3ca8df436b98,

title = "A comparative structural and electrochemical study of monoclinic Li 3V2(PO4)3/C and rhombohedral Li 2.5Na0.5V(2-2x/3)Nix(PO 4)3/C",

abstract = "In order to synthesize pure derivative of rhombohedral Li3V 2(PO4)3 (LVP), lithium-ion batteries materials Li2.5Na0.5V(2-2x/3)Nix(PO 4)3/C (x = 0.03, 0.06, 0.09) and its control, monoclinic Li3V2(PO4)3/C (LVP/C), were prepared by sol-gel method. The samples were investigated by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM), Raman spectroscopy, and electrochemical methods. The XRD patterns of Li2.5Na0.5V(2-2x/3)Ni x(PO4)3/C are in good agreement with that of rhombohedral LVP, which indicates that the Na+-Ni2+ composite doping can change the structure of monoclinic LVP. All the composite doping samples displayed a single flat plateau at 3.7 V in the charge/discharge voltage profile, which is caused by transformation of multi-phase mechanism to single-phase mechanism. For Li2.5Na0.5V 1.98Ni0.03(PO4)3/C, a specific discharge capacity of 108 mAh g-1 was achieved at a 0.5°C charge rate and a 1 C discharge rate, and a 99.0\% retention rate of the initial capacity was obtained after 50 cycles.",

keywords = "Cathode material, Crystal structure, Lithium vanadium phosphate, Lithium-ion battery, Sol-gel preparation",

author = "Wenhui Wang and Zhenyu Chen and Jiaolong Zhang and Changsong Dai and Jiajie Li and Dalong Ji",

year = "2013",

doi = "10.1016/j.electacta.2013.04.066",

language = "英语",

volume = "103",

pages = "259--265",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - A comparative structural and electrochemical study of monoclinic Li 3V2(PO4)3/C and rhombohedral Li 2.5Na0.5V(2-2x/3)Nix(PO 4)3/C

AU - Wang, Wenhui

AU - Chen, Zhenyu

AU - Zhang, Jiaolong

AU - Dai, Changsong

AU - Li, Jiajie

AU - Ji, Dalong

PY - 2013

Y1 - 2013

N2 - In order to synthesize pure derivative of rhombohedral Li3V 2(PO4)3 (LVP), lithium-ion batteries materials Li2.5Na0.5V(2-2x/3)Nix(PO 4)3/C (x = 0.03, 0.06, 0.09) and its control, monoclinic Li3V2(PO4)3/C (LVP/C), were prepared by sol-gel method. The samples were investigated by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM), Raman spectroscopy, and electrochemical methods. The XRD patterns of Li2.5Na0.5V(2-2x/3)Ni x(PO4)3/C are in good agreement with that of rhombohedral LVP, which indicates that the Na+-Ni2+ composite doping can change the structure of monoclinic LVP. All the composite doping samples displayed a single flat plateau at 3.7 V in the charge/discharge voltage profile, which is caused by transformation of multi-phase mechanism to single-phase mechanism. For Li2.5Na0.5V 1.98Ni0.03(PO4)3/C, a specific discharge capacity of 108 mAh g-1 was achieved at a 0.5°C charge rate and a 1 C discharge rate, and a 99.0% retention rate of the initial capacity was obtained after 50 cycles.

AB - In order to synthesize pure derivative of rhombohedral Li3V 2(PO4)3 (LVP), lithium-ion batteries materials Li2.5Na0.5V(2-2x/3)Nix(PO 4)3/C (x = 0.03, 0.06, 0.09) and its control, monoclinic Li3V2(PO4)3/C (LVP/C), were prepared by sol-gel method. The samples were investigated by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM), Raman spectroscopy, and electrochemical methods. The XRD patterns of Li2.5Na0.5V(2-2x/3)Ni x(PO4)3/C are in good agreement with that of rhombohedral LVP, which indicates that the Na+-Ni2+ composite doping can change the structure of monoclinic LVP. All the composite doping samples displayed a single flat plateau at 3.7 V in the charge/discharge voltage profile, which is caused by transformation of multi-phase mechanism to single-phase mechanism. For Li2.5Na0.5V 1.98Ni0.03(PO4)3/C, a specific discharge capacity of 108 mAh g-1 was achieved at a 0.5°C charge rate and a 1 C discharge rate, and a 99.0% retention rate of the initial capacity was obtained after 50 cycles.

KW - Cathode material

KW - Crystal structure

KW - Lithium vanadium phosphate

KW - Lithium-ion battery

KW - Sol-gel preparation

UR - https://www.scopus.com/pages/publications/84879043764

U2 - 10.1016/j.electacta.2013.04.066

DO - 10.1016/j.electacta.2013.04.066

M3 - 文章

AN - SCOPUS:84879043764

SN - 0013-4686

VL - 103

SP - 259

EP - 265

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -