Wet spinning of fiber-shaped flexible Zn-ion batteries toward wearable energy storage  

作　　者：Tingting Gao Guangyuan Yan Xin Yang Qing Yan Yankuan Tian Jianwei Song Faxue Li Xueli Wang Jianyong Yu Yiju Li Shaojun Guo 

机构地区：[1]Key Laboratory of Textile Science and Technology,Ministry of Education,College of Textiles,Donghua University,Shanghai 201620,China [2]Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China [3]School of Materials Science and Engineering,Peking University,Beijing 100871,China [4]State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace Engineering,Xi’an Jiaotong University,Xi’an 710049,Shaanxi,China [5]School of Biological and Chemical Engineering,NingboTech University,Ningbo 315100,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2022年第8期192-200,I0006,共10页能源化学（英文版）

基　　金：financially supported by the National Science Fund for Distinguished Young Scholars(52025133);the Beijing Natural Science Foundation(JQ18005);the Tencent Foundation through the XPLORER PRIZE,the National Key R&D Program of China(2017YFA0206701);the BIC-ESAT funding;the financial support of the Central Universities(2232020D-13);the Shanghai Sailing Program(20YF1400700);the National Natural Science Foundation of China(52003045);the financial support from the Young Elite Scientist Sponsorship Program by CAST(2019QNRC001);the“1000-Plan program”of Shaanxi Province;the“Young Talent Support Plan”of Xi’an Jiaotong University。

摘　　要：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 highperformance 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 nanotubes(CNFs/CNTs)binary composite network and either manganese dioxide nanowires(MnO_(2) NWs)or commercial Zn powders are utilized to spinning fiber cathodes and anodes,respectively.MnO_(2) 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 demonstrate favorable uniformity and flexibility.Benefiting from the well-designed electrodes,the assembled flexible fiber-shaped ZIB delivers a high specific capacity of 281.5 m Ah 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 m Wh 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 textiles for wearable and portable electronics.

关 键 词：Manufacturing Wet spinning Zn ion battery NANOCELLULOSE FIBER 

分 类 号：TQ340.64[化学工程—化纤工业] TM912[电气工程—电力电子与电力传动]