Articles with "asymmetric supercapacitors" as a keyword



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Fe2O3 Nanoneedles on Ultrafine Nickel Nanotube Arrays as Efficient Anode for High‐Performance Asymmetric Supercapacitors

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Published in 2017 at "Advanced Functional Materials"

DOI: 10.1002/adfm.201606728

Abstract: High performance of electrochemical energy storage devices depends on the smart structure engineering of electrodes, including the tailored nanoarchitectures of current collectors and subtle hybridization of active materials. To improve the anode supercapacitive performance of… read more here.

Keywords: asymmetric supercapacitors; fe2o3 nanoneedles; nanotube arrays; nanoneedles ultrafine ... See more keywords
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Integrated Biomonitoring Sensing with Wearable Asymmetric Supercapacitors Based on Ti3C2 MXene and 1T‐Phase WS2 Nanosheets

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Published in 2020 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202003673

Abstract: Research on wearable sensing technologies has been gaining considerable attention in the development of portable bio‐monitoring devices for personal health. However, traditional energy storage systems with defined size and shape have inherent limitations in satisfying… read more here.

Keywords: wearable asymmetric; sensing wearable; integrated biomonitoring; supercapacitors based ... See more keywords
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High-Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na0.5 MnO2 Nanosheet Assembled Nanowall Arrays.

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Published in 2017 at "Advanced materials"

DOI: 10.1002/adma.201700804

Abstract: The voltage limit for aqueous asymmetric supercapacitors is usually 2 V, which impedes further improvement in energy density. Here, high Na content Birnessite Na0.5 MnO2 nanosheet assembled nanowall arrays are in situ formed on carbon… read more here.

Keywords: asymmetric supercapacitors; mno2 nanosheet; na0 mno2; nanowall arrays ... See more keywords
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Flexible Asymmetric Supercapacitors with Ultrahigh Energy Density through Synergistic Design of Electrodes

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Published in 2018 at "Advanced Science"

DOI: 10.1002/advs.201800784

Abstract: Abstract Despite being among the most researched energy storage devices, supercapacitors have often suffered from their relatively low operating voltage and energy density, which greatly limit their practical applications. In this work, asymmetric supercapacitors (ASCs)… read more here.

Keywords: flexible asymmetric; asymmetric supercapacitors; energy; asc devices ... See more keywords
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Flexible Asymmetric Supercapacitors Based on Nitrogen-Doped Graphene Hydrogels with Embedded Nickel Hydroxide Nanoplates.

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Published in 2017 at "ChemSusChem"

DOI: 10.1002/cssc.201600150

Abstract: To push the energy density limit of supercapacitors (SCs), new electrode materials with hierarchical nano-micron pore architectures are strongly desired. Graphene hydrogels that consist of 3 D porous frameworks have received particular attention but their capacitance… read more here.

Keywords: flexible asymmetric; graphene hydrogels; asymmetric supercapacitors; doped graphene ... See more keywords
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Vanadium and Niobium MXenes-Bilayered V2 O5 Asymmetric Supercapacitors.

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Published in 2023 at "Small methods"

DOI: 10.1002/smtd.202201551

Abstract: MXenes offer high metallic conductivity and redox capacitance that are attractive for high-power, high-energy storage devices. However, they operate limitedly under high anodic potentials due to irreversible oxidation. Pairing them with oxides to design asymmetric supercapacitors… read more here.

Keywords: asymmetric supercapacitors; voltage window; energy storage;
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One-step electrodeposition fabrication of iron cobalt sulfide nanosheet arrays on Ni foam for high-performance asymmetric supercapacitors

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Published in 2020 at "Ionics"

DOI: 10.1007/s11581-020-03508-6

Abstract: Herein, a non-polluting and simple electrodeposition strategy is presented by us for fabricating ternary iron cobalt transition metal sulfide (FeCoS) on Ni foam with nanosheet arrays, which are used as cathode materials for asymmetric supercapacitors.… read more here.

Keywords: asymmetric supercapacitors; nanosheet arrays; high performance; iron cobalt ... See more keywords
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Highly bonded T-Nb2O5/rGO nanohybrids for 4 V quasi-solid state asymmetric supercapacitors with improved electrochemical performance

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Published in 2018 at "Nano Research"

DOI: 10.1007/s12274-018-2049-1

Abstract: T-Nb2O5/reduced graphene oxide nanohybrids were fabricated via the hydrothermal attachment of Nb2O5 nanowires to dispersed graphene oxide nanosheets followed by a high-temperature phase transformation. Electrochemical measurements showed that the nanohybrid anodes possessed enhanced reversible capacity… read more here.

Keywords: solid state; asymmetric supercapacitors; highly bonded; bonded nb2o5 ... See more keywords
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Fabrication of completely interface-engineered Ni(OH)2/rGO nanoarchitectures for high-performance asymmetric supercapacitors

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Published in 2018 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2017.09.145

Abstract: Abstract Mesoporous nickel hydroxides Ni(OH) 2 /graphene nanohybrids were fabricated via heteroassembly of oppositely charged exfoliated Ni(OH) 2 and graphite oxide (GO) nanosheets in formamide. The resulting hybrids exhibited a hierarchically porous networks composed of… read more here.

Keywords: asymmetric supercapacitors; rgo; high performance; capacitance ... See more keywords
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Three-dimensional nanoporous N-doped graphene/iron oxides as anode materials for high-density energy storage in asymmetric supercapacitors

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Published in 2018 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2017.11.001

Abstract: Abstract There is considerable interest in developing novel electrode materials for storing/delivering more energy than carbonaceous materials at fast charge/discharge rates. Here we demonstrate nitrogen-doped graphene/iron oxide hybrid electrode with three-dimensional nanoporous architecture (NP NDG/FeOx)… read more here.

Keywords: storage; asymmetric supercapacitors; energy; doped graphene ... See more keywords
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Hierarchical structure electrodes of NiO ultrathin nanosheets anchored to NiCo2O4 on carbon cloth with excellent cycle stability for asymmetric supercapacitors

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Published in 2019 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2018.08.142

Abstract: Abstract To fabricate free-standing electrodes with hierarchical structured redox-type metal oxides has become a wise strategy for the development of high-performance energy storage systems. Two types of NiCo2O4 with needle-like and slice-like morphologies act as… read more here.

Keywords: nico2o4 nio; ultrathin nanosheets; nanosheets anchored; nio ultrathin ... See more keywords