Journal ArticleDOI
Waterproof, Ultrahigh Areal-Capacitance, Wearable Supercapacitor Fabrics.
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TLDR
Low-cost materials are used including multiwall carbon nanotube, reduced graphene oxide, and metallic textiles to fabricate composite fabric electrodes, in which MWCNT and RGO are alternatively vacuum-filtrated directly onto Ni-coated cotton fabrics to achieve ultrahigh areal capacitance.Abstract:
High-performance supercapacitors (SCs) are promising energy storage devices to meet the pressing demand for future wearable applications. Because the surface area of a human body is limited to 2 m2 , the key challenge in this field is how to realize a high areal capacitance for SCs, while achieving rapid charging, good capacitive retention, flexibility, and waterproofing. To address this challenge, low-cost materials are used including multiwall carbon nanotube (MWCNT), reduced graphene oxide (RGO), and metallic textiles to fabricate composite fabric electrodes, in which MWCNT and RGO are alternatively vacuum-filtrated directly onto Ni-coated cotton fabrics. The composite fabric electrodes display typical electrical double layer capacitor behavior, and reach an ultrahigh areal capacitance up to 6.2 F cm-2 at a high areal current density of 20 mA cm-2 . All-solid-state fabric-type SC devices made with the composite fabric electrodes and water-repellent treatment can reach record-breaking performance of 2.7 F cm-2 at 20 mA cm-2 at the first charge-discharge cycle, 3.2 F cm-2 after 10 000 charge-discharge cycles, zero capacitive decay after 10 000 bending tests, and 10 h continuous underwater operation. The SC devices are easy to assemble into tandem structures and integrate into garments by simple sewing.read more
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Journal ArticleDOI
Bio-Integrated Wearable Systems: A Comprehensive Review
Tyler R. Ray,Jungil Choi,Amay J. Bandodkar,Siddharth Krishnan,Philipp Gutruf,Limei Tian,Roozbeh Ghaffari,John A. Rogers +7 more
TL;DR: This review summarizes the latest advances in this emerging field of "bio-integrated" technologies in a comprehensive manner that connects fundamental developments in chemistry, material science, and engineering with sensing technologies that have the potential for widespread deployment and societal benefit in human health care.
Journal ArticleDOI
Multifunctional and Water-Resistant MXene-Decorated Polyester Textiles with Outstanding Electromagnetic Interference Shielding and Joule Heating Performances
Qi-Wei Wang,Hao-Bin Zhang,Ji Liu,Sai Zhao,Xi Xie,Liu-Xin Liu,Rui Yang,Nikhil Koratkar,Zhong-Zhen Yu +8 more
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Xi Fan,Wanyi Nie,Hsinhan Tsai,Naixiang Wang,Huihui Huang,Ya-Jun Cheng,Rongjiang Wen,Rongjiang Wen,Liujia Ma,Feng Yan,Yonggao Xia +10 more
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Flexible and Multifunctional Silk Textiles with Biomimetic Leaf-Like MXene/Silver Nanowire Nanostructures for Electromagnetic Interference Shielding, Humidity Monitoring, and Self-Derived Hydrophobicity
Journal ArticleDOI
Scalable 2D Hierarchical Porous Carbon Nanosheets for Flexible Supercapacitors with Ultrahigh Energy Density.
Lei Yao,Lei Yao,Qin Wu,Peixin Zhang,Junmin Zhang,Dongrui Wang,Yongliang Li,Xiangzhong Ren,Hongwei Mi,Libo Deng,Zijian Zheng +10 more
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References
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Journal ArticleDOI
Graphene-Based Ultracapacitors
TL;DR: CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here their performance in an ultracapacitor cell is demonstrated, illustrating the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.
Journal ArticleDOI
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TL;DR: This work synthesized a porous carbon with a Brunauer-Emmett-Teller surface area, a high electrical conductivity, and a low oxygen and hydrogen content that has high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes.
Journal ArticleDOI
Scalable fabrication of high-power graphene micro-supercapacitors for flexible and on-chip energy storage
TL;DR: This work demonstrates a scalable fabrication of graphene micro-supercapacitors over large areas by direct laser writing on graphite oxide films using a standard LightScribe DVD burner, which demonstrates a power density among the highest values achieved for any supercapacitor.
Journal ArticleDOI
Liquid-Mediated Dense Integration of Graphene Materials for Compact Capacitive Energy Storage
TL;DR: Taking advantage of chemically converted graphene’s intrinsic microcorrugated two-dimensional configuration and self-assembly behavior, it is shown that such materials can be readily formed by capillary compression of adaptive graphene gel films in the presence of a nonvolatile liquid electrolyte.
Journal ArticleDOI
Stretchable, Porous, and Conductive Energy Textiles
Liangbing Hu,Mauro Pasta,Fabio La Mantia,Lifeng Cui,Sangmoo Jeong,Heather Dawn Deshazer,Jang Wook Choi,Seung Min Han,Yi Cui +8 more
TL;DR: Wearable power devices using everyday textiles as the platform, with an extremely simple "dipping and drying" process using single-walled carbon nanotube (SWNT) ink, are described, which show outstanding flexibility and stretchability and demonstrate strong adhesion between the SWNTs and the textiles of interest.