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Fibril-Type Textile Electrodes Enabling Extremely High Areal Capacity through Pseudocapacitive Electroplating onto Chalcogenide Nanoparticle-Encapsulated Fibrils
Authors
Woojae Chang
Jinhan Cho
+5 more
Yongmin Ko
Younji Ko
Cheong Hoon Kwon
Seokmin Lee
Donghyeon Nam
Publication date
25 September 2022
Publisher
Wiley-VCH Verlag
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PubMed
Abstract
Effective incorporation of conductive and energy storage materials into 3D porous textiles plays a pivotal role in developing and designing high-performance energy storage devices. Here, a fibril-type textile pseudocapacitor electrode with outstanding capacity, good rate capability, and excellent mechanical stability through controlled interfacial interaction-induced electroplating is reported. First, tetraoctylammonium bromide-stabilized copper sulfide nanoparticles (TOABr-CuS NPs) are uniformly assembled onto cotton textiles. This approach converts insulating textiles to conductive textiles preserving their intrinsically porous structure with an extremely large surface area. For the preparation of textile current collector with bulk metal-like electrical conductivity, Ni is additionally electroplated onto the CuS NP-assembled textiles (i.e., Ni-EPT). Furthermore, a pseudocapacitive NiCo-layered double hydroxide (LDH) layer is subsequently electroplated onto Ni-EPT for the cathode. The formed NiCo-LDH electroplated textiles (i.e., NiCo-EPT) exhibit a high areal capacitance of 12.2 F cm(-2) (at 10 mA cm(-2)), good rate performance, and excellent cycling stability. Particularly, the areal capacity of NiCo-EPT can be further increased through their subsequent stacking. The 3-stack NiCo-EPT delivers an unprecedentedly high areal capacitance of 28.8 F cm(-2) (at 30 mA cm(-2)), which outperforms those of textile-based pseudocapacitor electrodes reported to date. © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.TRU
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Last time updated on 12/01/2024
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Last time updated on 12/12/2022