Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures

Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures

Fast lithium ion (Li+) transport in solid-state polymer-matrix conductors is in desperate demand in a wide range of room-temperature scenarios but remains a formidable challenge. Herein, we designed a class of solid-state electrolytes based on mixed-graft block copolymers (mGBCPs) containing short p...

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Bibliographic Details
Main Authors: Xiaoyu Ji, Mengxue Cao, Xiaowei Fu, Ruiqi Liang, An N. Le, Qiuting Zhang, Mingjiang Zhong
Format: Article
Language:English
Published: Elsevier 2020-08-01
Series:Giant
Subjects:
Graft copolymers
Room-temperature lithium battery
Solid-state electrolytes
Online Access:http://www.sciencedirect.com/science/article/pii/S2666542520300308
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spelling doaj-43d3d38890614284b67a6330643fcdcd2020-11-25T04:01:36ZengElsevierGiant2666-54252020-08-013100027Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architecturesXiaoyu Ji0Mengxue Cao1Xiaowei Fu2Ruiqi Liang3An N. Le4Qiuting Zhang5Mingjiang Zhong6Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA; Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaDepartment of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USADepartment of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA; State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, ChinaDepartment of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USADepartment of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USADepartment of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT 06511, USADepartment of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA; Department of Chemistry, Yale University, New Haven, CT 06511, USA; Corresponding author at: Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA.Fast lithium ion (Li+) transport in solid-state polymer-matrix conductors is in desperate demand in a wide range of room-temperature scenarios but remains a formidable challenge. Herein, we designed a class of solid-state electrolytes based on mixed-graft block copolymers (mGBCPs) containing short poly(ethylene oxide) (PEO) and polydimethylsiloxane (PDMS) side chains. The strong immiscibility of PEO and PDMS resulted in the formation of ordered phase-separated nanostructures. Diverse morphologies, including double gyroids, hexagonally perforated lamellae, hexagonally packed cylinders, and lamellae, were observed at different volume fractions of PEO/PDMS blocks. The impact of chain mobility of PEO on Li+ transport was investigated by varying the length of PEO side chains and blending with free PEO chains. We demonstrated that physically blending mGBCPs with free amorphous PEO chains significantly facilitated the Li+ conduction, and a solid-state electrolyte with room-temperature conductivity up to 2.0 × 10−4 S/cm was prepared.http://www.sciencedirect.com/science/article/pii/S2666542520300308Graft copolymersRoom-temperature lithium batterySolid-state electrolytes
collection DOAJ
language English
format Article
sources DOAJ
author Xiaoyu Ji
Mengxue Cao
Xiaowei Fu
Ruiqi Liang
An N. Le
Qiuting Zhang
Mingjiang Zhong
spellingShingle Xiaoyu Ji
Mengxue Cao
Xiaowei Fu
Ruiqi Liang
An N. Le
Qiuting Zhang
Mingjiang Zhong
Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures
Giant
Graft copolymers
Room-temperature lithium battery
Solid-state electrolytes
author_facet Xiaoyu Ji
Mengxue Cao
Xiaowei Fu
Ruiqi Liang
An N. Le
Qiuting Zhang
Mingjiang Zhong
author_sort Xiaoyu Ji
title Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures
title_short Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures
title_full Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures
title_fullStr Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures
title_full_unstemmed Efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures
title_sort efficient room-temperature solid-state lithium ion conductors enabled by mixed-graft block copolymer architectures
publisher Elsevier
series Giant
issn 2666-5425
publishDate 2020-08-01
description Fast lithium ion (Li+) transport in solid-state polymer-matrix conductors is in desperate demand in a wide range of room-temperature scenarios but remains a formidable challenge. Herein, we designed a class of solid-state electrolytes based on mixed-graft block copolymers (mGBCPs) containing short poly(ethylene oxide) (PEO) and polydimethylsiloxane (PDMS) side chains. The strong immiscibility of PEO and PDMS resulted in the formation of ordered phase-separated nanostructures. Diverse morphologies, including double gyroids, hexagonally perforated lamellae, hexagonally packed cylinders, and lamellae, were observed at different volume fractions of PEO/PDMS blocks. The impact of chain mobility of PEO on Li+ transport was investigated by varying the length of PEO side chains and blending with free PEO chains. We demonstrated that physically blending mGBCPs with free amorphous PEO chains significantly facilitated the Li+ conduction, and a solid-state electrolyte with room-temperature conductivity up to 2.0 × 10−4 S/cm was prepared.
topic Graft copolymers
Room-temperature lithium battery
Solid-state electrolytes
url http://www.sciencedirect.com/science/article/pii/S2666542520300308
work_keys_str_mv AT xiaoyuji efficientroomtemperaturesolidstatelithiumionconductorsenabledbymixedgraftblockcopolymerarchitectures
AT mengxuecao efficientroomtemperaturesolidstatelithiumionconductorsenabledbymixedgraftblockcopolymerarchitectures
AT xiaoweifu efficientroomtemperaturesolidstatelithiumionconductorsenabledbymixedgraftblockcopolymerarchitectures
AT ruiqiliang efficientroomtemperaturesolidstatelithiumionconductorsenabledbymixedgraftblockcopolymerarchitectures
AT annle efficientroomtemperaturesolidstatelithiumionconductorsenabledbymixedgraftblockcopolymerarchitectures
AT qiutingzhang efficientroomtemperaturesolidstatelithiumionconductorsenabledbymixedgraftblockcopolymerarchitectures
AT mingjiangzhong efficientroomtemperaturesolidstatelithiumionconductorsenabledbymixedgraftblockcopolymerarchitectures
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