High-performance yarn supercapacitor based on directly twisted carbon nanotube@bacterial cellulose membrane
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ORIGINAL RESEARCH
High-performance yarn supercapacitor based on directly twisted carbon nanotube@bacterial cellulose membrane Wenbo Wang . Yuan Yang . Zeqi Chen . Zhongmin Deng . Lingling Fan . Wei Guo . Jie Xu . Zhenghua Meng
Received: 28 March 2020 / Accepted: 20 June 2020 Ó Springer Nature B.V. 2020
Abstract With the rapid development of flexible electronic device, yarn supercapacitors (YSCs) as one kind of flexible energy storage devices are attracting more and more attention. Carbon nanotube (CNT) and conductive polymers are widely investigated as potential active materials in energy storage field. Bacterial cellulose (BC) nanofiber is one of highly promising alternatives to the flexible substrates. Hence, an all-solid-state YSC is successfully fabricated via twisting CNT@BC membrane and
electrochemically depositing polypyrrole. The proposed YSC demonstrates a high areal capacitance of 458 mF cm-2 at a current density of 0.8 mA cm-2 as well as a robust cycling stability (no significant degradation in capacitance after 2000 cycles). Moreover, the proposed YSC is comparatively flexible, confirming it as a promising power source candidate for portable and wearable electronics.
W. Wang W. Guo Z. Meng (&) Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, 430070 Wuhan, China e-mail: [email protected] Y. Yang Z. Chen Z. Deng L. Fan J. Xu (&) State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technology, College of Materials Science and Engineering, Wuhan Textile University, 430200 Wuhan, China e-mail: [email protected]
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Keywords Yarn supercapacitor Bacterial cellulose Polypyrrole Carbon nanotube
Introduction Supercapacitors are a promising candidate among the energy storage systems because of their fast charge/ discharge, long cycling lifetime and high power density (Luo et al. 2018; Lv et al. 2019; Peng et al. 2017d; Qiu et al. 2017; Yan et al. 2018; Yang et al. 2018, 2020; Ye et al. 2016, 2019). In the past decades, the development of portable and wearable electronics has greatly boosted the demand for miniaturized flexible supercapacitors (Hou et al. 2017). Compared with flexible planar supercapacitors, yarn supercapacitors (YSCs) have been extensively studied owing to their potential of being conveniently integrated into wearable electronic devices or woven into breathable textiles (Jin et al. 2018; Qu et al. 2016; Sankar and Selvan 2016; Senthilkumar et al. 2015; Sun et al. 2016; Wang et al. 2018a, b; Wei et al. 2017; Xu et al. 2016; Ye et al. 2016; Yu et al. 2015; Zhang et al. 2019; Zhi et al. 2017; Zhou et al. 2016). Based on
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