Journal of Energy Chemistry, volume 46, pages 237-247

Lithiated Nafion-garnet ceramic composite electrolyte membrane for solid-state lithium metal battery

Publication typeJournal Article
Publication date2020-07-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor13.1
ISSN20954956
Electrochemistry
Energy Engineering and Power Technology
Fuel Technology
Energy (miscellaneous)
Abstract
Single-ion conducting solid polymer electrolytes are expected to play a vital role in the realization of solid-state Li metal batteries. In this work, a lithiated Nafion (Li-Nafion)-garnet ceramic Li6.25La3Zr2Al0.25O12 (LLZAO) composite solid electrolyte (CSE) membrane with 30 µm thickness was prepared for the first time. By employing X-ray photoelectron spectroscopy and transmission electron microscope, the interaction between LLZAO and Li-Nafion was investigated. It is found that the LLZAO interacts with the Li-Nafion to form a space charge layer at the interface between LLZAO and Li-Nafion. The space charge layer reduces the migration barrier of Li-ions and improves the ionic conductivity of the CSE membrane. The CSE membrane containing 10 wt% LLZAO exhibits the highest ionic conductivity of 2.26 × 10−4 S cm−1 at 30 °C among the pristine Li-Nafion membrane, the membrane containing 5 wt%, 20 wt%, and 30 wt% LLZAO, respectively. It also exhibits a high Li-ion transference number of 0.92, and a broader electrochemical window of 0–+4.8 V vs. Li+/Li than that of 0–+4.0 V vs. Li+/Li for the pristine Li-Nafion membrane. It is observed that the CSE membrane not only inhibits the growth of Li dendrites but also keeps excellent electrochemical stability with the Li electrode. Benefitting from the above merits, the solid-state LiFePO4/Li cell fabricated with the CSE membrane was practically charged and discharged at 30 °C. The cell exhibits an initial reversible discharge specific capacity of 160 mAh g−1 with 97% capacity retention after 100 cycles at 0.2 C, and maintains discharge specific capacity of 126 mAh g−1 after 500 cycles at 1 C. The CSE membrane prepared with Li-Nafion and LLZAO is proved to be a promising solid electrolyte for advanced solid-state Li metal batteries.

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Gao J. et al. Lithiated Nafion-garnet ceramic composite electrolyte membrane for solid-state lithium metal battery // Journal of Energy Chemistry. 2020. Vol. 46. pp. 237-247.
GOST all authors (up to 50) Copy
Gao J., Shao Q., Chen J. Lithiated Nafion-garnet ceramic composite electrolyte membrane for solid-state lithium metal battery // Journal of Energy Chemistry. 2020. Vol. 46. pp. 237-247.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.jechem.2019.11.012
UR - https://doi.org/10.1016/j.jechem.2019.11.012
TI - Lithiated Nafion-garnet ceramic composite electrolyte membrane for solid-state lithium metal battery
T2 - Journal of Energy Chemistry
AU - Gao, Jing
AU - Shao, Qinjun
AU - Chen, Jian
PY - 2020
DA - 2020/07/01 00:00:00
PB - Elsevier
SP - 237-247
VL - 46
SN - 2095-4956
ER -
BibTex
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BibTex Copy
@article{2020_Gao,
author = {Jing Gao and Qinjun Shao and Jian Chen},
title = {Lithiated Nafion-garnet ceramic composite electrolyte membrane for solid-state lithium metal battery},
journal = {Journal of Energy Chemistry},
year = {2020},
volume = {46},
publisher = {Elsevier},
month = {jul},
url = {https://doi.org/10.1016/j.jechem.2019.11.012},
pages = {237--247},
doi = {10.1016/j.jechem.2019.11.012}
}
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