The lithium ionic conductivity of 2LiBH4-MgH2 composite as solid electrolyte

Leyu Zhan; Yao Zhang; Mengyuan Xiang; Yunfeng Zhu; Xinli Guo; Jian Chen; Zengmei Wang; Liquan Li

doi:10.1016/j.inoche.2017.05.010

The lithium ionic conductivity of 2LiBH₄-MgH₂ composite as solid electrolyte

Leyu Zhan, Yao Zhang, Mengyuan Xiang, Yunfeng Zhu, Xinli Guo, Jian Chen, Zengmei Wang, Liquan Li

College of Materials Science and Engineering

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

8 Scopus citations

Abstract

2LiBH₄-MgH₂ was employed as fast ionic conductor for the first time. The present work found that 2LiBH₄-MgH₂ composite offers σ of 10^− 2 S cm^− 1 at a temperature over 373 K, and possesses σ value 10 times higher than that of LiBH₄ at a temperature below 373 K. A window voltage of 4 V can be achieved for 2LiBH₄-MgH₂ according to the cyclic voltammetry (CV for 5 cycles) tests. X-ray diffraction (XRD) and Fourier Transform infrared spectroscopy (FTIR) measurements on 2LiBH₄-MgH₂ samples milled for different time demonstrate that original phases are well preserved during ball milling and temperature ramping even after CV tests. Their chemical stabilities were also demonstrated by differential scanning calorimetry (DSC) measurements. The enhanced lithium mobility at low temperature in 2LiBH₄-MgH₂ should be ascribed to the favorable boundaries, in which defects and amorphous phases were clearly observed by means of high-resolution transmission electron microscope (HRTEM).

Original language	English
Pages (from-to)	62-65
Number of pages	4
Journal	Inorganic Chemistry Communications
Volume	83
DOIs	https://doi.org/10.1016/j.inoche.2017.05.010
State	Published - Sep 2017

Keywords

Electrochemical stability
Ionic conductivity
Ionic mobility
LiBH-MgH composite

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10.1016/j.inoche.2017.05.010

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title = "The lithium ionic conductivity of 2LiBH4-MgH2 composite as solid electrolyte",

abstract = "2LiBH4-MgH2 was employed as fast ionic conductor for the first time. The present work found that 2LiBH4-MgH2 composite offers σ of 10− 2 S cm− 1 at a temperature over 373 K, and possesses σ value 10 times higher than that of LiBH4 at a temperature below 373 K. A window voltage of 4 V can be achieved for 2LiBH4-MgH2 according to the cyclic voltammetry (CV for 5 cycles) tests. X-ray diffraction (XRD) and Fourier Transform infrared spectroscopy (FTIR) measurements on 2LiBH4-MgH2 samples milled for different time demonstrate that original phases are well preserved during ball milling and temperature ramping even after CV tests. Their chemical stabilities were also demonstrated by differential scanning calorimetry (DSC) measurements. The enhanced lithium mobility at low temperature in 2LiBH4-MgH2 should be ascribed to the favorable boundaries, in which defects and amorphous phases were clearly observed by means of high-resolution transmission electron microscope (HRTEM).",

keywords = "Electrochemical stability, Ionic conductivity, Ionic mobility, LiBH-MgH composite",

author = "Leyu Zhan and Yao Zhang and Mengyuan Xiang and Yunfeng Zhu and Xinli Guo and Jian Chen and Zengmei Wang and Liquan Li",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2017",

month = sep,

doi = "10.1016/j.inoche.2017.05.010",

language = "英语",

volume = "83",

pages = "62--65",

journal = "Inorganic Chemistry Communications",

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TY - JOUR

T1 - The lithium ionic conductivity of 2LiBH4-MgH2 composite as solid electrolyte

AU - Zhan, Leyu

AU - Zhang, Yao

AU - Xiang, Mengyuan

AU - Zhu, Yunfeng

AU - Guo, Xinli

AU - Chen, Jian

AU - Wang, Zengmei

AU - Li, Liquan

PY - 2017/9

Y1 - 2017/9

N2 - 2LiBH4-MgH2 was employed as fast ionic conductor for the first time. The present work found that 2LiBH4-MgH2 composite offers σ of 10− 2 S cm− 1 at a temperature over 373 K, and possesses σ value 10 times higher than that of LiBH4 at a temperature below 373 K. A window voltage of 4 V can be achieved for 2LiBH4-MgH2 according to the cyclic voltammetry (CV for 5 cycles) tests. X-ray diffraction (XRD) and Fourier Transform infrared spectroscopy (FTIR) measurements on 2LiBH4-MgH2 samples milled for different time demonstrate that original phases are well preserved during ball milling and temperature ramping even after CV tests. Their chemical stabilities were also demonstrated by differential scanning calorimetry (DSC) measurements. The enhanced lithium mobility at low temperature in 2LiBH4-MgH2 should be ascribed to the favorable boundaries, in which defects and amorphous phases were clearly observed by means of high-resolution transmission electron microscope (HRTEM).

AB - 2LiBH4-MgH2 was employed as fast ionic conductor for the first time. The present work found that 2LiBH4-MgH2 composite offers σ of 10− 2 S cm− 1 at a temperature over 373 K, and possesses σ value 10 times higher than that of LiBH4 at a temperature below 373 K. A window voltage of 4 V can be achieved for 2LiBH4-MgH2 according to the cyclic voltammetry (CV for 5 cycles) tests. X-ray diffraction (XRD) and Fourier Transform infrared spectroscopy (FTIR) measurements on 2LiBH4-MgH2 samples milled for different time demonstrate that original phases are well preserved during ball milling and temperature ramping even after CV tests. Their chemical stabilities were also demonstrated by differential scanning calorimetry (DSC) measurements. The enhanced lithium mobility at low temperature in 2LiBH4-MgH2 should be ascribed to the favorable boundaries, in which defects and amorphous phases were clearly observed by means of high-resolution transmission electron microscope (HRTEM).

KW - Electrochemical stability

KW - Ionic conductivity

KW - Ionic mobility

KW - LiBH-MgH composite

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U2 - 10.1016/j.inoche.2017.05.010

DO - 10.1016/j.inoche.2017.05.010

M3 - 文章

AN - SCOPUS:85021095710

SN - 1387-7003

VL - 83

SP - 62

EP - 65

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

ER -

The lithium ionic conductivity of 2LiBH₄-MgH₂ composite as solid electrolyte

Abstract

Keywords

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