Highly elastic energy storage device based on intrinsically super-stretchable polymer lithium-ion conductor with high conductivity

Shi Wang ¹Jixin He ¹Qiange Li ¹Yu Wang ¹Chongyang Liu ¹Tao Cheng ¹Wen-Yong Lai²

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作者信息

1. State Key Laboratory of Organic Electronics and Information Displays(SKLOEID),Institute of Advanced Materials(IAM),School of Chemistry and Life Sciences,Nanjing University of Posts & Telecommunications,9 Wenyuan Road,Nanjing 210023,China
2. State Key Laboratory of Organic Electronics and Information Displays(SKLOEID),Institute of Advanced Materials(IAM),School of Chemistry and Life Sciences,Nanjing University of Posts & Telecommunications,9 Wenyuan Road,Nanjing 210023,China;Frontiers Science Center for Flexible Electronics(FSCFE),MIIT Key Laboratory of Flexible Electronics(KLoFE),Northwestern Polytechnical University,Xi'an 710072,China
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Abstract

Stretchable power sources,especially stretchable lithium-ion batteries(LIBs),have attracted increasing atten-tion due to their enormous prospects for powering flexible/wearable electronics.Despite recent advances,it is still challenging to develop ultra-stretchable LIBs that can withstand large deformation.In particular,stretch-able LIBs require an elastic electrolyte as a basic component,while the conductivity of most elastic electrolytes drops sharply during deformation,especially during large deformations.This is why highly stretchable LIBs have not yet been realized until now.As a proof of concept,a super-stretchable LIB with strain up to 1200％is created based on an intrinsically super-stretchable polymer electrolyte as the lithium-ion conductor.The super-stretchable conductive system is constructed by an effective diblock copolymerization strategy via photocuring of vinyl functionalized 2-ureido-4-pyrimidone(VFUpy),an acrylic monomer containing succinonitrile and a lithium salt,achieving high ionic conductivity(3.5 x 10-4 mS cm-1 at room temperature(RT))and large deformation(the strain can reach 4560％).The acrylic elastomer containing Li-ion conductive domains can strongly increase the compatibility between the neighboring elastic networks,resulting in high ionic conductivity under ultra-large deformation,while VFUpy increases elasticity modulus(over three times)and electrochemical stability(voltage window reaches 5.3 V)of the prepared polymer conductor.At a strain of up to 1200％,the resulting stretchable LIBs are still sufficient to power LEDs.This study sheds light on the design and development of high-performance intrinsically super-stretchable materials for the advancement of highly elastic energy storage devices for powering flexible/wearable electronics that can endure large deformation.

Key words

Stretchable electronics/Flexible electronics/Flexible energy storage devices/Stretchable lithium-ion conductors/Flexible lithium-ion batteries

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基金项目

国家自然科学基金(21835003)

国家自然科学基金(21674050)

国家自然科学基金(91833304)

国家自然科学基金(21805136)

国家自然科学基金(61904084)

国家重点基础研究发展计划(973计划)(2023YFB3608904)

国家重点基础研究发展计划(973计划)(2017YFB0404501)

国家重点基础研究发展计划(973计划)(2014CB648300)

江苏省自然科学基金(BK20210601)

江苏省自然科学基金(BE2019120)

江苏省自然科学基金(BK20190737)

Program for Jiangsu Specially-Appointed Professor(RK030STP15001)

江苏省"六大人才高峰"高层次人才项目(TD-XCL-009)

江苏省"333高层次人才培养工程"项目(BRA2017402)

NUPT"1311 Project"and Scientific Foundation(NY219159)

NUPT"1311 Project"and Scientific Foundation(NY218164)

NUPT"1311 Project"and Scientific Foundation(NY219020)

Leading Talent of Technological Innovation of National Ten-Thousands Talents Program of China()

Excellent Scientific and Technological Innovative Teams of Jiangsu Higher Education Institutions(TJ217038)

江苏高校优势学科建设工程项目(PAPD)

江苏高校优势学科建设工程项目(YX030003)

Special Fund of"Jiangsu Provincial High-level Innovative and Entrepreneurial Talents Introduction Program"(the first batch)in 20(CZ030SC20016)

中国博士后科学基金(2021M691652)

Jiangsu Province Postdoctoral Science Foundation(2021K323C)

出版年

2024

自然科学基础研究(英文)

CSTPCD

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参考文献量42

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