Chemical Engineering Journal, volume 435, pages 135106

Porous poly(vinylidene fluoride) supported three-dimensional poly(ethylene glycol) thin solid polymer electrolyte for flexible high temperature all-solid-state lithium metal batteries

ZHIYAN WANG 1, 2
Qingya Guo 2
Rongrong Jiang 2
Shungui Deng 2
Junfeng Ma 2
Ping Cui 1, 2
Xiayin Yao 1, 2
Publication typeJournal Article
Publication date2022-05-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor15.1
ISSN13858947, 03009467
General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering
Environmental Chemistry
Abstract
• The thin PVDF@PEG SPE (≈20 μm) was prepared by in-situ thermal curing. • The thin SPE possesses an ultrahigh ionic conductance of 75.7 mS at 30 °C. • The Li/PVDF@PEG/Li cell can be stable cycled more than 3200 h at 60 and 100 °C. • LiFePO 4 /PVDF@PEG/Li battery can stable for 1000 cycles under 1C at 60 and 100 °C. Solid polymer electrolytes (SPEs) are promising candidates for the next-generation all-solid-state batteries due to their good flexibility as well as safety. However, the low ionic conductivity, uncontrolled lithium dendrite growth, poor cyclic performance and high temperature intolerance are still great challenges for their widely applications. In this work, a flexible and dense poly(vinylidene fluoride)/poly(ethylene glycol) (PVDF@PEG) SPE is designed and fabricated via an in-situ thermocuring method, which exhibits a high ionic conductivity of 8.03 × 10 −5 S cm −1 at 30 °C and excellent electrochemical stability window of 5.2 V. More importantly, the Li/PVDF@PEG/Li symmetric cell can be continuously cycled at 0.1 mA cm −2 more than 3200 h without short-circuit at both 60 and 100 °C. Owing to these outstanding merits, the LiFePO 4 /PVDF@PEG/Li pouch cell delivered a high discharge specific capacity of 122.8 mAh g −1 after 1000 cycles at 1C with a capacity retention of 86.36% under 60 °C. Notably, the LiFePO 4 //Li pouch cell also shows excellent cycle stability at 100 °C, exhibiting reversible capacities from 155.5 to 123.1 mAh g −1 under 1C after 1000 cycles.

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WANG Z. et al. Porous poly(vinylidene fluoride) supported three-dimensional poly(ethylene glycol) thin solid polymer electrolyte for flexible high temperature all-solid-state lithium metal batteries // Chemical Engineering Journal. 2022. Vol. 435. p. 135106.
GOST all authors (up to 50) Copy
WANG Z., Guo Q., Jiang R., Deng S., Ma J., Cui P., Yao X. Porous poly(vinylidene fluoride) supported three-dimensional poly(ethylene glycol) thin solid polymer electrolyte for flexible high temperature all-solid-state lithium metal batteries // Chemical Engineering Journal. 2022. Vol. 435. p. 135106.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.cej.2022.135106
UR - https://doi.org/10.1016/j.cej.2022.135106
TI - Porous poly(vinylidene fluoride) supported three-dimensional poly(ethylene glycol) thin solid polymer electrolyte for flexible high temperature all-solid-state lithium metal batteries
T2 - Chemical Engineering Journal
AU - WANG, ZHIYAN
AU - Guo, Qingya
AU - Jiang, Rongrong
AU - Deng, Shungui
AU - Ma, Junfeng
AU - Cui, Ping
AU - Yao, Xiayin
PY - 2022
DA - 2022/05/01 00:00:00
PB - Elsevier
SP - 135106
VL - 435
SN - 1385-8947
SN - 0300-9467
ER -
BibTex
Cite this
BibTex Copy
@article{2022_WANG,
author = {ZHIYAN WANG and Qingya Guo and Rongrong Jiang and Shungui Deng and Junfeng Ma and Ping Cui and Xiayin Yao},
title = {Porous poly(vinylidene fluoride) supported three-dimensional poly(ethylene glycol) thin solid polymer electrolyte for flexible high temperature all-solid-state lithium metal batteries},
journal = {Chemical Engineering Journal},
year = {2022},
volume = {435},
publisher = {Elsevier},
month = {may},
url = {https://doi.org/10.1016/j.cej.2022.135106},
pages = {135106},
doi = {10.1016/j.cej.2022.135106}
}
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