High-performance flexible one-dimensional(1D)electrochemical energy storage devices are crucial for the applications of wearable electronics.Although much progress on various 1D energy storage devices has been made,challenges involving fabrication cost,scalability,and efficiency remain.Herein,a high-performance flexible all-fiber zinc-ion battery(ZIB)is fabricated using a low-cost,scalable,and efficient continuous wet-spinning method.Viscous composite inks containing cellulose nanofibers/carbon nan-otubes(CNFs/CNTs)binary composite network and either manganese dioxide nanowires(MnO2 NWs)or commercial Zn powders are utilized to spinning fiber cathodes and anodes,respectively.MnO2 NWs and Zn powders are uniformly dispersed in the interpenetrated CNFs/CNTs fibrous network,leading to homogenous composite inks with an ideal shear-thinning property.The obtained fiber electrodes demon-strate favorable uniformity and flexibility.Benefiting from the well-designed electrodes,the assembled flexible fiber-shaped ZIB delivers a high specific capacity of 281.5 mAh g-1 at 0.25 A g-1 and displays excellent cycling stability over 400 cycles.Moreover,the wet-spun fiber-shaped ZIBs achieve ultrahigh gravimetric and volumetric energy densities of 47.3 Wh kg-1 and 131.3 mWh cm-3,respectively,based on both cathode and anode and maintain favorable stability even after 4000 bending cycles.This work offers a new concept design of 1D flexible ZIBs that can be potentially incorporated into commercial tex-tiles for wearable and portable electronics.

Tingting Ga;Guangyuan Yan;Xin Yang;Qing Yan;Yankuan Tian;Jianwei Song;Faxue Li;Xueli Wang;Jianyong Yu;Yiju Li;Shaojun Guo

Key Laboratory of Textile Science and Technology,Ministry of Education,College of Textiles,Donghua University,Shanghai 201620,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China;School of Biological and Chemical Engineering,NingboTech University,Ningbo 315100,Zhejiang,China;State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace Engineering,Xi'an Jiaotong University,Xi'an 710049,Shaanxi,China;School of Materials Science and Engineering,Peking University,Beijing 100871,China

能源化学

[1]Tingting Ga;Guangyuan Yan;Xin Yang;Qing Yan;Yankuan Tian;Jianwei Song;Faxue Li;Xueli Wang;Jianyong Yu;Yiju Li;Shaojun Guo-.Wet spinning of fiber-shaped flexible Zn-ion batteries toward wearable energy storage)[J].能源化学,2022(08):192-200

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