PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion Batteries
Abstract All‐solid‐state polymer lithium‐ion batteries are ideal choice for the next generation of rechargeable lithium‐ion batteries due to their high energy, safety and flexibility. Among all polymer electrolytes, PEO‐based polymer electrolytes have attracted extensive attention because they can d...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Wiley-VCH
2020-06-01
|
Series: | ChemistryOpen |
Subjects: | |
Online Access: | https://doi.org/10.1002/open.202000107 |
id |
doaj-3bfdac28f7754d1bad3d94d075a8fbf2 |
---|---|
record_format |
Article |
spelling |
doaj-3bfdac28f7754d1bad3d94d075a8fbf22021-04-02T11:08:26ZengWiley-VCHChemistryOpen2191-13632020-06-019671371810.1002/open.202000107PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion BatteriesWang Lyu0Prof. Guoqiang He1Dr. Ting Liu2School of Resources, Environment and Materials Guangxi University Nanning Guangxi 530004 ChinaSchool of Resources, Environment and Materials Guangxi University Nanning Guangxi 530004 ChinaFoshan (Southern China) Institute of New Materials 17 Shenhai Road, Foshan Guangdong 528200 ChinaAbstract All‐solid‐state polymer lithium‐ion batteries are ideal choice for the next generation of rechargeable lithium‐ion batteries due to their high energy, safety and flexibility. Among all polymer electrolytes, PEO‐based polymer electrolytes have attracted extensive attention because they can dissolve various lithium salts. However, the ionic conductivity of pure PEO‐based polymer electrolytes is limited due to high crystallinity and poor segment motion. An inorganic filler SiO2 nanospheres and a plasticizer Succinonitrile (SN) are introduced into the PEO matrix to improve the crystallization of PEO, promote the formation of amorphous region, and thus improve the movement of PEO chain segment. Herein, a PEO18−LiTFSI−5 %SiO2−5 %SN composite solid polymer electrolyte (CSPE) was prepared by solution‐casting. The high ionic conductivity of the electrolyte was demonstrated at 60 °C up to 3.3×10−4 S cm−1. Meanwhile, the electrochemical performance of LiFePO4/CSPE/Li all‐solid‐state battery was tested, with discharge capacity of 157.5 mAh g−1 at 0.5 C, and capacity retention rate of 99 % after 100 cycles at 60 °C. This system provides a feasible strategy for the development of efficient all‐solid‐state lithium‐ion batteries.https://doi.org/10.1002/open.202000107all-solid-statecomposite electrolytesPEO-based polymerslithium-ion batteriesenergy storage |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wang Lyu Prof. Guoqiang He Dr. Ting Liu |
spellingShingle |
Wang Lyu Prof. Guoqiang He Dr. Ting Liu PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion Batteries ChemistryOpen all-solid-state composite electrolytes PEO-based polymers lithium-ion batteries energy storage |
author_facet |
Wang Lyu Prof. Guoqiang He Dr. Ting Liu |
author_sort |
Wang Lyu |
title |
PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion Batteries |
title_short |
PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion Batteries |
title_full |
PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion Batteries |
title_fullStr |
PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion Batteries |
title_full_unstemmed |
PEO‐LITFSI‐SiO2‐SN System Promotes the Application of Polymer Electrolytes in All‐Solid‐State Lithium‐ion Batteries |
title_sort |
peo‐litfsi‐sio2‐sn system promotes the application of polymer electrolytes in all‐solid‐state lithium‐ion batteries |
publisher |
Wiley-VCH |
series |
ChemistryOpen |
issn |
2191-1363 |
publishDate |
2020-06-01 |
description |
Abstract All‐solid‐state polymer lithium‐ion batteries are ideal choice for the next generation of rechargeable lithium‐ion batteries due to their high energy, safety and flexibility. Among all polymer electrolytes, PEO‐based polymer electrolytes have attracted extensive attention because they can dissolve various lithium salts. However, the ionic conductivity of pure PEO‐based polymer electrolytes is limited due to high crystallinity and poor segment motion. An inorganic filler SiO2 nanospheres and a plasticizer Succinonitrile (SN) are introduced into the PEO matrix to improve the crystallization of PEO, promote the formation of amorphous region, and thus improve the movement of PEO chain segment. Herein, a PEO18−LiTFSI−5 %SiO2−5 %SN composite solid polymer electrolyte (CSPE) was prepared by solution‐casting. The high ionic conductivity of the electrolyte was demonstrated at 60 °C up to 3.3×10−4 S cm−1. Meanwhile, the electrochemical performance of LiFePO4/CSPE/Li all‐solid‐state battery was tested, with discharge capacity of 157.5 mAh g−1 at 0.5 C, and capacity retention rate of 99 % after 100 cycles at 60 °C. This system provides a feasible strategy for the development of efficient all‐solid‐state lithium‐ion batteries. |
topic |
all-solid-state composite electrolytes PEO-based polymers lithium-ion batteries energy storage |
url |
https://doi.org/10.1002/open.202000107 |
work_keys_str_mv |
AT wanglyu peolitfsisio2snsystempromotestheapplicationofpolymerelectrolytesinallsolidstatelithiumionbatteries AT profguoqianghe peolitfsisio2snsystempromotestheapplicationofpolymerelectrolytesinallsolidstatelithiumionbatteries AT drtingliu peolitfsisio2snsystempromotestheapplicationofpolymerelectrolytesinallsolidstatelithiumionbatteries |
_version_ |
1724165541066702848 |