LiF assisted synthesis of LiTi2(PO4)3 solid electrolyte with enhanced ionic conductivity

Lilong Xiong; Zaihuang Ren; Youlong Xu; Shengchun Mao; Pei Lei; Mengting Sun

doi:10.1016/j.ssi.2017.06.018

LiF assisted synthesis of LiTi₂(PO₄)₃ solid electrolyte with enhanced ionic conductivity

Lilong Xiong
, Zaihuang Ren
, Youlong Xu
, Shengchun Mao
, Pei Lei
, Mengting Sun

Xi'an Jiaotong University

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

51 Scopus citations

Abstract

Solid electrolytes with high ionic conductivity are important for all solid state lithium batteries. NASICON typed LiTi₂(PO₄)₃ solid electrolytes are synthesized by a simply LiF assisted solid state reaction. The electrolytes prepared with LiF assist exhibit much larger particle size, less voids and higher crystallinity than that of the sample without LiF assist. The LiTi₂(PO₄)₃ sample synthesized with LiF additive (the molar ratio of LiTi₂(PO₄)₃:LiF = 1:0.5) delivers lithium ion conductivity of 2.318 × 10^{− 4} S cm^{− 1} at room temperature with an activation energy as low as 0.28 eV; while the electrolyte prepared without LiF assist exhibits conductivity of 7.181 × 10^{− 6} S cm^{− 1} and activation energy of 0.48 eV. The significantly enlarged conductivity and reduced activation energy suggest LiF assist is an effective and simple method to improve the performance of LiTi₂(PO₄)₃ solid electrolytes for all solid state lithium batteries.

Original language	English
Pages (from-to)	22-26
Number of pages	5
Journal	Solid State Ionics
Volume	309
DOIs	https://doi.org/10.1016/j.ssi.2017.06.018
State	Published - 15 Oct 2017

Keywords

Activation energy
Ionic conductivity
Solid electrolyte

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10.1016/j.ssi.2017.06.018

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@article{a0dc8474b0c94748859735f3fad72972,

title = "LiF assisted synthesis of LiTi2(PO4)3 solid electrolyte with enhanced ionic conductivity",

abstract = "Solid electrolytes with high ionic conductivity are important for all solid state lithium batteries. NASICON typed LiTi2(PO4)3 solid electrolytes are synthesized by a simply LiF assisted solid state reaction. The electrolytes prepared with LiF assist exhibit much larger particle size, less voids and higher crystallinity than that of the sample without LiF assist. The LiTi2(PO4)3 sample synthesized with LiF additive (the molar ratio of LiTi2(PO4)3:LiF = 1:0.5) delivers lithium ion conductivity of 2.318 × 10− 4 S cm− 1 at room temperature with an activation energy as low as 0.28 eV; while the electrolyte prepared without LiF assist exhibits conductivity of 7.181 × 10− 6 S cm− 1 and activation energy of 0.48 eV. The significantly enlarged conductivity and reduced activation energy suggest LiF assist is an effective and simple method to improve the performance of LiTi2(PO4)3 solid electrolytes for all solid state lithium batteries.",

keywords = "Activation energy, Ionic conductivity, Solid electrolyte",

author = "Lilong Xiong and Zaihuang Ren and Youlong Xu and Shengchun Mao and Pei Lei and Mengting Sun",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = oct,

day = "15",

doi = "10.1016/j.ssi.2017.06.018",

language = "英语",

volume = "309",

pages = "22--26",

journal = "Solid State Ionics",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - LiF assisted synthesis of LiTi2(PO4)3 solid electrolyte with enhanced ionic conductivity

AU - Xiong, Lilong

AU - Ren, Zaihuang

AU - Xu, Youlong

AU - Mao, Shengchun

AU - Lei, Pei

AU - Sun, Mengting

PY - 2017/10/15

Y1 - 2017/10/15

N2 - Solid electrolytes with high ionic conductivity are important for all solid state lithium batteries. NASICON typed LiTi2(PO4)3 solid electrolytes are synthesized by a simply LiF assisted solid state reaction. The electrolytes prepared with LiF assist exhibit much larger particle size, less voids and higher crystallinity than that of the sample without LiF assist. The LiTi2(PO4)3 sample synthesized with LiF additive (the molar ratio of LiTi2(PO4)3:LiF = 1:0.5) delivers lithium ion conductivity of 2.318 × 10− 4 S cm− 1 at room temperature with an activation energy as low as 0.28 eV; while the electrolyte prepared without LiF assist exhibits conductivity of 7.181 × 10− 6 S cm− 1 and activation energy of 0.48 eV. The significantly enlarged conductivity and reduced activation energy suggest LiF assist is an effective and simple method to improve the performance of LiTi2(PO4)3 solid electrolytes for all solid state lithium batteries.

AB - Solid electrolytes with high ionic conductivity are important for all solid state lithium batteries. NASICON typed LiTi2(PO4)3 solid electrolytes are synthesized by a simply LiF assisted solid state reaction. The electrolytes prepared with LiF assist exhibit much larger particle size, less voids and higher crystallinity than that of the sample without LiF assist. The LiTi2(PO4)3 sample synthesized with LiF additive (the molar ratio of LiTi2(PO4)3:LiF = 1:0.5) delivers lithium ion conductivity of 2.318 × 10− 4 S cm− 1 at room temperature with an activation energy as low as 0.28 eV; while the electrolyte prepared without LiF assist exhibits conductivity of 7.181 × 10− 6 S cm− 1 and activation energy of 0.48 eV. The significantly enlarged conductivity and reduced activation energy suggest LiF assist is an effective and simple method to improve the performance of LiTi2(PO4)3 solid electrolytes for all solid state lithium batteries.

KW - Activation energy

KW - Ionic conductivity

KW - Solid electrolyte

UR - https://www.scopus.com/pages/publications/85021775763

U2 - 10.1016/j.ssi.2017.06.018

DO - 10.1016/j.ssi.2017.06.018

M3 - 文章

AN - SCOPUS:85021775763

SN - 0167-2738

VL - 309

SP - 22

EP - 26

JO - Solid State Ionics

JF - Solid State Ionics

ER -

LiF assisted synthesis of LiTi₂(PO₄)₃ solid electrolyte with enhanced ionic conductivity

Abstract

Keywords

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