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

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

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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.

Stretchable electronicsFlexible electronicsFlexible energy storage devicesStretchable lithium-ion conductorsFlexible lithium-ion batteries

Shi Wang、Jixin He、Qiange Li、Yu Wang、Chongyang Liu、Tao Cheng、Wen-Yong Lai

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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

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家重点基础研究发展计划(973计划)国家重点基础研究发展计划(973计划)国家重点基础研究发展计划(973计划)江苏省自然科学基金江苏省自然科学基金江苏省自然科学基金Program for Jiangsu Specially-Appointed Professor江苏省"六大人才高峰"高层次人才项目江苏省"333高层次人才培养工程"项目NUPT"1311 Project"and Scientific FoundationNUPT"1311 Project"and Scientific FoundationNUPT"1311 Project"and Scientific FoundationLeading Talent of Technological Innovation of National Ten-Thousands Talents Program of ChinaExcellent Scientific and Technological Innovative Teams of Jiangsu Higher Education Institutions江苏高校优势学科建设工程项目江苏高校优势学科建设工程项目Special Fund of"Jiangsu Provincial High-level Innovative and Entrepreneurial Talents Introduction Program"(the first batch)in 20中国博士后科学基金Jiangsu Province Postdoctoral Science Foundation

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2024

10.1016/j.fmre.2022.06.003

自然科学基础研究(英文)

自然科学基础研究(英文)

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年,卷(期)：2024.(1)
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