Weavable asymmetric carbon nanotube yarn supercapacitor for electronic textiles†
2019-11-13 17:13:43 조회수99
Changsoon Choi,(‡ab) Jong Woo Park,(‡a) Keon Jung Kim,(a) Duck Weon Lee,(a) Mônica Jung de Andrade,(c) Shi Hyeong Kim,(c) Sanjeev Gambhir,(d) Geoffrey M. Spinks,(d) Ray H. Baughman(c) and Seon Jeong Kim(*a) * )Corresponding authors a )Center for Self-powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul 04763, Korea b)Division of Smart Textile Convergence Research, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea c )The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083, USA d )Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW, Australia 원문 링크 :!divAbstract


Asymmetric supercapacitors are receiving much research interests due to their wide operating potential window and high energy density. In this study, we report the fabrication of asymmetrically configured yarn based supercapacitor by using liquid-state biscrolling technology. High loading amounts of reduced graphene oxide anode guest (90.1 wt%) and MnO2 cathode guest (70 wt%) materials were successfully embedded into carbon nanotube yarn host electrodes. The resulting asymmetric yarn supercapacitor coated by gel based organic electrolyte (PVDF-HFP-TEA·BF4) exhibited wider potential window (up to 3.5 V) and resulting high energy density (43 μW h cm−2). Moreover, the yarn electrodes were mechanically strong enough to be woven into commercial textiles. The textile supercapacitor exhibited stable electrochemical energy storage performances during dynamically applied deformations. 

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