Liquid electrolyte mediated flexible pouch-type hybrid supercapacitor based on binderless core–shell nanostructures assembled with honeycomb-like porous carbon

Veerasubramani, Ganesh Kumar; Chandrasekhar, Arunkumar; Sudhakaran, M.S.P.; Mok, Young Sun; Kim, Sang‐Jae

doi:10.1039/c7ta01308f

Cited by 99 publications

(33 citation statements)

References 67 publications

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“…Moreover, the device even maintained good areal energy density of 0.26 mWh cm −2 at high power density 27.22 mW cm −2 . Impressively, the obtained energy and power density values of this HSC are comparable or even higher than the previously reported asymmetric SCs/HSCs, such as hierarchical Ni‐Co‐S NSs//graphene (0.118 mWh cm −2 at 10.4 mW cm −2 ), Ag@Ce 6 Mo 10 O 39 //AC (0.0183 mWh cm −2 at 0.739 mW cm −2 ), core–shell‐like NiCo 2 S 4 hierarchical structures//activated carbon (0.121 mWh cm −2 at 0.941 mW cm −2 ), Ni‐Co‐S nanoflakes//polypyrrole (0.112 mWh cm −2 at 1.5 mW cm −2 ), Ni 0.8 Cu 0.2 ‐S nanostructures//N‐doped graphene (0.138 mWh cm −2 at 6.4 mW cm −2 ), Ni‐Mo‐S//Ni‐Fe‐S (0.228 mWh cm −2 at 1.58 mW cm −2 ), Ni 3 S 2 @CdS//porous carbon (0.259 mWh cm −2 at 1.482 mW cm −2 ), Zn‐Ni‐P//Fe 2 O 3 @NG (0.346 mWh cm −2 at 2.37 mW cm −2 ), core–shell CoMoO 4 @Co(OH) 2 //porous carbon (0.167 mWh cm −2 at 1.5 mW cm −2 ), CoNi 2 S 4 /Ni 3 S 2 @Ni(OH) 2 //active carbon (0.432 mWh cm −2 at 1.646 mW cm −2 ), and MnCo 2 S 4 //rGO (0.25 mWh cm −2 at 6.4 mW cm −2 ), respectively. Moreover, the comparative results of our HSC with many other reports are also summarized in Table S2 (Supporting Information).…”

Section: Resultssupporting

confidence: 67%

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni_0.67Co_0.33S‐Based Hybrid Supercapacitors

Nagaraju

Sekhar

Ramulu

2019

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113

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Self‐powered charging systems in conjunction with renewable energy conversion and storage devices have attracted promising attention in recent years. In this work, a prolific approach to design a wind/solar‐powered rechargeable high‐energy density pouch‐type hybrid supercapacitor (HSC) is proposed. The pouch‐type HSC is fabricated by engineering nature‐inspired nanosliver (nano‐Ag) decorated Ni0.67Co0.33S forest‐like nanostructures on Ni foam (nano‐Ag@NCS FNs/Ni foam) as a battery‐type electrode and porous activated carbon as a capacitive‐type electrode. Initially, the core–shell‐like NCS FNs/Ni foam is prepared via a single‐step wet‐chemical method, followed by a light‐induced growth of nano‐Ag onto it for enhancing the conductivity of the composite. Utilizing the synergistic effects of forest‐like nano‐Ag@NCS FNs/Ni foam as a composite electrode, the fabricated device shows a maximum capacitance of 1104.14 mF cm−2 at a current density of 5 mA cm−2 and it stores superior energy and power densities of 0.36 mWh cm−2 and 27.22 mW cm−2, respectively along with good cycling stability, which are higher than most of previous reports. The high‐energy storage capability of HSCs is further connected to wind fans and solar cells to harvest renewable energy. The wind/solar charged HSCs can effectively operate various electronic devices for a long time, enlightening its potency for the development of sustainable energy systems.

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Section: Resultssupporting

confidence: 67%

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni_0.67Co_0.33S‐Based Hybrid Supercapacitors

Nagaraju

Sekhar

Ramulu

2019

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113

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“…The maximum capacities of Electrodes I and III are much lower and can only reach 309 mA h/g (371 µA h/cm 2 ) and 324 mA h/g (453 µA h/cm 2 ), respectively, over 25% and 21% lower than that of Electrode II. Notably, the specific capacity of our homogeneous architecture here is favorably comparable with those of previously reported nanostructures, including CoMoO 4 @Co(OH) 2 core-shell structures (265 mA h/cm 2 at 2 mA/cm 2 ) [46], as well as CoMoO 4 nanoflakes (32.40 mA h/g; 492.48 µAh/cm 2 ) [47], Ni–Mo–S nanosheets (312 mA h/g at 1 mA/cm 2 ) [48], and flower-like Mn–Co oxysulfide (136 mA h/g at 2 A/g) [49]. Detailed comparisons in electrochemical performances among these devices and our structure can be found in Table S1.…”

Section: Resultssupporting

confidence: 84%

Homogeneous Core/Shell NiMoO4@NiMoO4 and Activated Carbon for High Performance Asymmetric Supercapacitor

Dong

Hui

et al. 2019

Nanomaterials

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Here, we report the extraordinary electrochemical energy storage capability of NiMoO4@NiMoO4 homogeneous hierarchical nanosheet-on-nanowire arrays (SOWAs), synthesized on nickel substrate by a two-stage hydrothermal process. Comparatively speaking, the SOWAs electrode displays superior electrochemical performances over the pure NiMoO4 nanowire arrays. Such improvements can be ascribed to the characteristic homogeneous hierarchical structure, which not only effectively increases the active surface areas for fast charge transfer, but also reduces the electrode resistance significantly by eliminating the potential barrier at the nanowire/nanosheet junction, an issue usually seen in other reported heterogeneous architectures. We further evaluate the performances of the SOWAs by constructing an asymmetric hybrid supercapacitor (ASC) with the SOWAs and activated carbon (AC). The optimized ASC shows excellent electrochemical performances with 47.2 Wh/kg in energy density of 1.38 kW/kg at 0–1.2 V. Moreover, the specific capacity retention can be as high as 91.4% after 4000 cycles, illustrating the remarkable cycling stability of the NiMoO4@NiMoO4//AC ASC device. Our results show that this unique NiMoO4@NiMoO4 SOWA has great prospects for future energy storage applications.

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“…Since the NCM-based MOFs showed different mass loadings under various growth timings, we calculated the areal capacity instead of gravimetric capacity. The areal capacity of the prepared materials was calculated using the following formulae [49]:…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Ternary MOF-Based Redox Active Sites Enabled 3D-on-2D Nanoarchitectured Battery-Type Electrodes for High-Energy-Density Supercapatteries

et al. 2020

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Designing rationally combined metal–organic frameworks (MOFs) with multifunctional nanogeometries is of significant research interest to enable the electrochemical properties in advanced energy storage devices. Herein, we explored a new class of binder-free dual-layered Ni–Co–Mn-based MOFs (NCM-based MOFs) with three-dimensional (3D)-on-2D nanoarchitectures through a polarity-induced solution-phase method for high-performance supercapatteries. The hierarchical NCM-based MOFs having grown on nickel foam exhibit a battery-type charge storage mechanism with superior areal capacity (1311.4 μAh cm−2 at 5 mA cm−2), good rate capability (61.8%; 811.67 μAh cm−2 at 50 mA cm−2), and an excellent cycling durability. The superior charge storage properties are ascribed to the synergistic features, higher accessible active sites of dual-layered nanogeometries, and exalted redox chemistry of multi metallic guest species, respectively. The bilayered NCM-based MOFs are further employed as a battery-type electrode for the fabrication of supercapattery paradigm with biomass-derived nitrogen/oxygen doped porous carbon as a negative electrode, which demonstrates excellent capacity of 1.6 mAh cm−2 along with high energy and power densities of 1.21 mWh cm−2 and 32.49 mW cm−2, respectively. Following, the MOF-based supercapattery was further assembled with a renewable solar power harvester to use as a self-charging station for various portable electronic applications.

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Liquid electrolyte mediated flexible pouch-type hybrid supercapacitor based on binderless core–shell nanostructures assembled with honeycomb-like porous carbon

Abstract: The current challenges in the usage of liquid electrolyte in energy storage devices are closely correlated with the flexibility and portability of the devices.

Cited by 99 publications

References 67 publications

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni_0.67Co_0.33S‐Based Hybrid Supercapacitors

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni_0.67Co_0.33S‐Based Hybrid Supercapacitors

Homogeneous Core/Shell NiMoO4@NiMoO4 and Activated Carbon for High Performance Asymmetric Supercapacitor

Ternary MOF-Based Redox Active Sites Enabled 3D-on-2D Nanoarchitectured Battery-Type Electrodes for High-Energy-Density Supercapatteries

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Liquid electrolyte mediated flexible pouch-type hybrid supercapacitor based on binderless core–shell nanostructures assembled with honeycomb-like porous carbon

Abstract: The current challenges in the usage of liquid electrolyte in energy storage devices are closely correlated with the flexibility and portability of the devices.

Cited by 99 publications

References 67 publications

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni0.67Co0.33S‐Based Hybrid Supercapacitors

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni0.67Co0.33S‐Based Hybrid Supercapacitors

Homogeneous Core/Shell NiMoO4@NiMoO4 and Activated Carbon for High Performance Asymmetric Supercapacitor

Ternary MOF-Based Redox Active Sites Enabled 3D-on-2D Nanoarchitectured Battery-Type Electrodes for High-Energy-Density Supercapatteries

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Product

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About

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni_0.67Co_0.33S‐Based Hybrid Supercapacitors

An Integrated Approach Toward Renewable Energy Storage Using Rechargeable Ag@Ni_0.67Co_0.33S‐Based Hybrid Supercapacitors