Interfacial-engineered robust and high performance flexible polylactic acid/polyaniline/MXene electrodes for high-perfarmance supercapacitors

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外文摘要：Flexible supercapacitors with high mechanical strength,excellent flexibility,and high performance are highly desired to meet the increasing demands of flexible electronics.However,the trade-off between mechanical and electrochemical properties remains challenging.In this context,an interface-engineered strategy approach was proposed to construct polylactic acid(PLA)/polyaniline(PANI)/MXene(PPM)film electrodes for flexible supercapacitor applications.In the PPM electrode,the porous PLA prepared from the nonsolvent-induced-phase-separation method served as an ideal flexible substrate,providing excel-lent flexibility and high mechanical strength,whereas PANI as the coupling agent,enhanced the interfa-cial strength between PLA and the electroactive MXene that was firmly anchored and deposited on PLA through a facile layer-by-layer dip coating method.The tensile strength at break,elongation at break,and toughness of PPM are 53.09 MPa,11.09％,and 4.12 MJ/m3,respectively,much higher than those of pure MXene(29.36 MPa,4.62％,and 0.75 MJ/m3).At an optimum mass loading density of 3 mg cm-2 for MXene,the fabricated PPM3 film electrode achieved a high specific capacitance of 290.8 F g-1 at a cur-rent density of 1 A g-1 in the three-electrode setup,approximately 1.5 times that of 190.8 F g-1 for pure MXene.Meanwhile,the symmetric all-solid-state supercapacitor based on PPM3 film electrodes delivers a high specific capacitance of 193.7 F g-1 at a current density of 0.25 A g-1,with a corresponding high energy density of 9.3 Wh kg-1at a power density of 291.3 W kg-1.The SC retains 86％of its original ca-pacitance even bent at 120° and also possesses an excellent fire-retardant ability,demonstrating its great potential for flexible and safe wearable electronics.

外文关键词：

Flexible supercapacitorsPorous polylactic acidMXeneInterface engineering

作者：

Zhaoyang Li、Jiongru Li、Bo Wu、Huige Wei、Hua Guo、Zeinhom M.El-Bahy、Baosheng Liu、Muhun He、Saad Melhi、Xuetao Shi、Saleh D.Mekkey、Yunlong Sun、Ben Bin Xu、Zhanhu Guo

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作者单位：

Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization,College of Chemical Engineering and Materials Science,Tianjin University of Science and Technology,Tianjin 300457,China

College of Light Industry Science and Engineering,Tianjin University of Science and Technology,Tianjin 300457,China

Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals,Tianjin University of Science and Technology,Tianjin 300457,China

Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an 710072,China

Department of Chemistry,Faculty of Science,Al-Azhar University,Nasr City 11884,Cairo,Egypt

College of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China

Department of Chemistry,College of Science,University of Bisha,Bisha,61922,Saudi Arabia

Chemistry Department,College of Sciences and Arts,Northern Border University,Rafha,91911,Saudi Arabia

Department of Mechanical and Civil Engineering,Faculty of Engineering and Environment,Northumbria University,Newcastle Upon Tyne NE1 8ST,UK

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出版年：

2024

DOI：

10.1016/j.jmst.2024.02.084

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.203(36)