Effects of Li6.75La3Zr1.75Ta0.25O12 on chemical and electrochemical properties of polyacrylonitrile-based solid electrolytes

Xue ZHANG; Bing-Qing XU; Yuan Hua LIN; Yang SHEN; Liangliang LI; Ce-Wen NAN

doi:10.1016/j.ssi.2018.10.023

Effects of Li_6.75La₃Zr_1.75Ta_0.25O₁₂ on chemical and electrochemical properties of polyacrylonitrile-based solid electrolytes

Xue ZHANG, Bing-Qing XU, Yuan Hua LIN, Yang SHEN, Liangliang LI^*, Ce-Wen NAN

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

61 Citations (Scopus)

Abstract

Solid polymer electrolytes show great application potential in the next-generation all-solid-state Li-ion batteries due to its safety, electrochemical stability, and easy-processing feature. However, low ionic conductivity of solid polymer electrolytes hinders their commercialization. Currently, dispersing ceramic fillers in polymer electrolytes has been proved to be a promising approach to address this issue. Herein, we introduce Li_6.75La₃Zr_1.75Ta_0.25O₁₂ fillers into polyacrylonitrile-LiClO₄ matrix and study the effects of Li_6.75La₃Zr_1.75Ta_0.25O₁₂ on chemical and electrochemical properties of the polyacrylonitrile-based electrolytes. The addition of Li_6.75La₃Zr_1.75Ta_0.25O₁₂ triggers the cyclization and segmentation of polyacrylonitrile chains, which improves the mechanical strength and thermal stability of the electrolytes. The effects of Li_6.75La₃Zr_1.75Ta_0.25O₁₂ on the electrochemical properties of the electrolytes are thoroughly investigated. The polyacrylonitrile-based electrolyte with 20 wt% Li_6.75La₃Zr_1.75Ta_0.25O₁₂ fillers shows a high ionic conductivity of 2.2 × 10⁻⁴ S cm⁻1 at 40 °C, a wide electrochemical window of 4.9 V, and much improved Li+ transference number and cycling stability in a Li||Li symmetric cell. In addition, a solid-state LiFePO₄||Li full cell is assembled and tested at room temperature, demonstrating the applicability of polyacrylonitrile-based electrolytes in all-solid-state batteries.

Original language	English
Pages (from-to)	32-38
Number of pages	7
Journal	Solid State Ionics
Volume	327
Early online date	26 Oct 2018
DOIs	https://doi.org/10.1016/j.ssi.2018.10.023
Publication status	Published - 1 Dec 2018
Externally published	Yes

Bibliographical note

This work was supported by Basic Science Center Program of National Natural Science Foundation of China (NSFC) under Grant No. 51788104 and NSFC projects under Grant Nos. 51572149 , 51532002 , 51572141 , and 51625202 .

Keywords

Chemical structure
Electrochemical properties
Li7La3Zr2O12
Polyacrylonitrile
Solid-state lithium battery

Access to Document

10.1016/j.ssi.2018.10.023

Cite this

@article{5e54dc4141674d8da0c8c23b78b744b3,

title = "Effects of Li6.75La3Zr1.75Ta0.25O12 on chemical and electrochemical properties of polyacrylonitrile-based solid electrolytes",

abstract = "Solid polymer electrolytes show great application potential in the next-generation all-solid-state Li-ion batteries due to its safety, electrochemical stability, and easy-processing feature. However, low ionic conductivity of solid polymer electrolytes hinders their commercialization. Currently, dispersing ceramic fillers in polymer electrolytes has been proved to be a promising approach to address this issue. Herein, we introduce Li6.75La3Zr1.75Ta0.25O12 fillers into polyacrylonitrile-LiClO4 matrix and study the effects of Li6.75La3Zr1.75Ta0.25O12 on chemical and electrochemical properties of the polyacrylonitrile-based electrolytes. The addition of Li6.75La3Zr1.75Ta0.25O12 triggers the cyclization and segmentation of polyacrylonitrile chains, which improves the mechanical strength and thermal stability of the electrolytes. The effects of Li6.75La3Zr1.75Ta0.25O12 on the electrochemical properties of the electrolytes are thoroughly investigated. The polyacrylonitrile-based electrolyte with 20 wt% Li6.75La3Zr1.75Ta0.25O12 fillers shows a high ionic conductivity of 2.2 × 10−4 S cm−1 at 40 °C, a wide electrochemical window of 4.9 V, and much improved Li+ transference number and cycling stability in a Li||Li symmetric cell. In addition, a solid-state LiFePO4||Li full cell is assembled and tested at room temperature, demonstrating the applicability of polyacrylonitrile-based electrolytes in all-solid-state batteries.",

keywords = "Chemical structure, Electrochemical properties, Li7La3Zr2O12, Polyacrylonitrile, Solid-state lithium battery",

author = "Xue ZHANG and Bing-Qing XU and LIN, {Yuan Hua} and Yang SHEN and Liangliang LI and Ce-Wen NAN",

note = "This work was supported by Basic Science Center Program of National Natural Science Foundation of China (NSFC) under Grant No. 51788104 and NSFC projects under Grant Nos. 51572149 , 51532002 , 51572141 , and 51625202 .",

year = "2018",

month = dec,

day = "1",

doi = "10.1016/j.ssi.2018.10.023",

language = "English",

volume = "327",

pages = "32--38",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

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TY - JOUR

T1 - Effects of Li6.75La3Zr1.75Ta0.25O12 on chemical and electrochemical properties of polyacrylonitrile-based solid electrolytes

AU - ZHANG, Xue

AU - XU, Bing-Qing

AU - LIN, Yuan Hua

AU - SHEN, Yang

AU - LI, Liangliang

AU - NAN, Ce-Wen

N1 - This work was supported by Basic Science Center Program of National Natural Science Foundation of China (NSFC) under Grant No. 51788104 and NSFC projects under Grant Nos. 51572149 , 51532002 , 51572141 , and 51625202 .

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Solid polymer electrolytes show great application potential in the next-generation all-solid-state Li-ion batteries due to its safety, electrochemical stability, and easy-processing feature. However, low ionic conductivity of solid polymer electrolytes hinders their commercialization. Currently, dispersing ceramic fillers in polymer electrolytes has been proved to be a promising approach to address this issue. Herein, we introduce Li6.75La3Zr1.75Ta0.25O12 fillers into polyacrylonitrile-LiClO4 matrix and study the effects of Li6.75La3Zr1.75Ta0.25O12 on chemical and electrochemical properties of the polyacrylonitrile-based electrolytes. The addition of Li6.75La3Zr1.75Ta0.25O12 triggers the cyclization and segmentation of polyacrylonitrile chains, which improves the mechanical strength and thermal stability of the electrolytes. The effects of Li6.75La3Zr1.75Ta0.25O12 on the electrochemical properties of the electrolytes are thoroughly investigated. The polyacrylonitrile-based electrolyte with 20 wt% Li6.75La3Zr1.75Ta0.25O12 fillers shows a high ionic conductivity of 2.2 × 10−4 S cm−1 at 40 °C, a wide electrochemical window of 4.9 V, and much improved Li+ transference number and cycling stability in a Li||Li symmetric cell. In addition, a solid-state LiFePO4||Li full cell is assembled and tested at room temperature, demonstrating the applicability of polyacrylonitrile-based electrolytes in all-solid-state batteries.

AB - Solid polymer electrolytes show great application potential in the next-generation all-solid-state Li-ion batteries due to its safety, electrochemical stability, and easy-processing feature. However, low ionic conductivity of solid polymer electrolytes hinders their commercialization. Currently, dispersing ceramic fillers in polymer electrolytes has been proved to be a promising approach to address this issue. Herein, we introduce Li6.75La3Zr1.75Ta0.25O12 fillers into polyacrylonitrile-LiClO4 matrix and study the effects of Li6.75La3Zr1.75Ta0.25O12 on chemical and electrochemical properties of the polyacrylonitrile-based electrolytes. The addition of Li6.75La3Zr1.75Ta0.25O12 triggers the cyclization and segmentation of polyacrylonitrile chains, which improves the mechanical strength and thermal stability of the electrolytes. The effects of Li6.75La3Zr1.75Ta0.25O12 on the electrochemical properties of the electrolytes are thoroughly investigated. The polyacrylonitrile-based electrolyte with 20 wt% Li6.75La3Zr1.75Ta0.25O12 fillers shows a high ionic conductivity of 2.2 × 10−4 S cm−1 at 40 °C, a wide electrochemical window of 4.9 V, and much improved Li+ transference number and cycling stability in a Li||Li symmetric cell. In addition, a solid-state LiFePO4||Li full cell is assembled and tested at room temperature, demonstrating the applicability of polyacrylonitrile-based electrolytes in all-solid-state batteries.

KW - Chemical structure

KW - Electrochemical properties

KW - Li7La3Zr2O12

KW - Polyacrylonitrile

KW - Solid-state lithium battery

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U2 - 10.1016/j.ssi.2018.10.023

DO - 10.1016/j.ssi.2018.10.023

M3 - Journal Article (refereed)

AN - SCOPUS:85055444761

SN - 0167-2738

VL - 327

SP - 32

EP - 38

JO - Solid State Ionics

JF - Solid State Ionics

ER -