Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐Storage
Abstract Methods enabling the controllable fabrication of orderly structural and active nanomaterials, along with high‐speed ionic pathways for charge migration and storage are highly fundamental in fiber‐shaped micro‐supercapacitors (MSCs). However, due to fiber‐electrodes with compact internal mic...
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doaj-a821707e94bd4a5fa846af1c44ce736c2020-11-25T02:18:29ZengWileyAdvanced Science2198-38442020-01-0171n/an/a10.1002/advs.201901931Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐StorageJinku Meng0Guan Wu1Xingjiang Wu2Hengyang Cheng3Zhi Xu4Su Chen5State Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 P. R. ChinaState Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 P. R. ChinaState Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 P. R. ChinaState Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 P. R. ChinaState Key Laboratory of Chemical Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. ChinaState Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 P. R. ChinaAbstract Methods enabling the controllable fabrication of orderly structural and active nanomaterials, along with high‐speed ionic pathways for charge migration and storage are highly fundamental in fiber‐shaped micro‐supercapacitors (MSCs). However, due to fiber‐electrodes with compact internal microstructure and less porosity, MSCs usually display a low energy density. Here, an innovative microfluidic strategy is proposed to design ordered porous and anisotropic core–shell fibers based on nickel oxide arrays/graphene nanomaterials. Owing to the homogeneous microchannels reaction, the graphene core maintains a uniformly anisotropic porous structure, and the nickel oxide shell keeps steadily vertically aligned nanosheets. The MSC presents an ultrahigh energy density (120.3 µWh cm−2) and large specific capacitance (605.9 mF cm−2). This higher performance originates from the microfluidic‐architected core–shell fiber with abundant ionic channels (plentiful micro‐/mesopores), large specific‐surface‐area (425.6 m2 g−1), higher electrical conductivity (176.6 S cm−1), and sufficient redox activity, facilitating ions with quicker diffusion and greater accumulation. Considering those outstanding properties, a wearable self‐powered system, converting and storing solar energy into electric energy, is designed to light up displays. This microfluidic strategy offers an effective way to design new structural materials, which will advance the development of next‐generation wearable/smart industries.https://doi.org/10.1002/advs.201901931fibersmicrofluidicsmicro‐supercapacitorsnickel oxide arraysporous graphene |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jinku Meng Guan Wu Xingjiang Wu Hengyang Cheng Zhi Xu Su Chen |
spellingShingle |
Jinku Meng Guan Wu Xingjiang Wu Hengyang Cheng Zhi Xu Su Chen Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐Storage Advanced Science fibers microfluidics micro‐supercapacitors nickel oxide arrays porous graphene |
author_facet |
Jinku Meng Guan Wu Xingjiang Wu Hengyang Cheng Zhi Xu Su Chen |
author_sort |
Jinku Meng |
title |
Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐Storage |
title_short |
Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐Storage |
title_full |
Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐Storage |
title_fullStr |
Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐Storage |
title_full_unstemmed |
Microfluidic‐Architected Nanoarrays/Porous Core–Shell Fibers toward Robust Micro‐Energy‐Storage |
title_sort |
microfluidic‐architected nanoarrays/porous core–shell fibers toward robust micro‐energy‐storage |
publisher |
Wiley |
series |
Advanced Science |
issn |
2198-3844 |
publishDate |
2020-01-01 |
description |
Abstract Methods enabling the controllable fabrication of orderly structural and active nanomaterials, along with high‐speed ionic pathways for charge migration and storage are highly fundamental in fiber‐shaped micro‐supercapacitors (MSCs). However, due to fiber‐electrodes with compact internal microstructure and less porosity, MSCs usually display a low energy density. Here, an innovative microfluidic strategy is proposed to design ordered porous and anisotropic core–shell fibers based on nickel oxide arrays/graphene nanomaterials. Owing to the homogeneous microchannels reaction, the graphene core maintains a uniformly anisotropic porous structure, and the nickel oxide shell keeps steadily vertically aligned nanosheets. The MSC presents an ultrahigh energy density (120.3 µWh cm−2) and large specific capacitance (605.9 mF cm−2). This higher performance originates from the microfluidic‐architected core–shell fiber with abundant ionic channels (plentiful micro‐/mesopores), large specific‐surface‐area (425.6 m2 g−1), higher electrical conductivity (176.6 S cm−1), and sufficient redox activity, facilitating ions with quicker diffusion and greater accumulation. Considering those outstanding properties, a wearable self‐powered system, converting and storing solar energy into electric energy, is designed to light up displays. This microfluidic strategy offers an effective way to design new structural materials, which will advance the development of next‐generation wearable/smart industries. |
topic |
fibers microfluidics micro‐supercapacitors nickel oxide arrays porous graphene |
url |
https://doi.org/10.1002/advs.201901931 |
work_keys_str_mv |
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