Fundamental Consideration for Electrochemical Engineering of Supercapattery

Akinwolemiwa, Bamidele

doi:10.21577/0103-5053.20180010

Cited by 16 publications

(19 citation statements)

References 41 publications

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“…However, the low power density (< 1 kW kg −1 ) of batteries [31,35] and the very low energy density of supercapacitors (5)(6)(7)(8)(9)(10) Wh kg −1 ) [36] hinder their practical applications in hybrid electric vehicles, renewable energy storage grid and so on. Therefore, more attention should be given to the development of safe, long cycle life and highperformance energy storage devices having both high energy and power densities [12,[37][38][39][40][41][42]. Figure 1a represents the clear picture of energy and power densities of various energy storage devices known as Ragone plot [43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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HIGHLIGHTS• This article reviewed the recent progress on material challenges, charge storage mechanism, and electrochemical performance evaluation of supercapatteries.• Supercapatteries bridge the gap between supercapacitors (low energy density) and batteries (low power density). Fig. 1 a Ragone plot of various electrochemical energy conversion and storage devices [43]. b Schematic illustration of charge storage mechanism of EDL capacitor in porous carbon electrode. c Representation of EDLC structures: Helmholtz model, Gouy-Chapman model and Gouy-Chapman-Stern model. Schematic representation of the charge storage mechanisms in pseudocapacitor; d Intercalation (bulk redox) and e surface redox Nano-Micro Lett.(2020) 12:85Page 5 of 46 85 Table 1 Classification of various energy storage devices according to their charge storage mechanisms NFCS non-Faradaic capacitive storage = EDLC storage, CFS capacitive Faradaic storage = pseudocapacitive storage, NCFS non-capacitive Faradaic storage = battery-type storage Device Supercapattery Battery Supercapacitor Hybrid supercapacitor EDLC Pseudocapacitors

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Section: Introductionmentioning

confidence: 99%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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“…Various comprehensive reviews on supercapacitors and supercapatteries as well as critical reviews on electrode materials, electrolytes and engineering fundamentals of supercapatteries have been published in the past 3 years [25][26][27][28][29][30]. This review, however, intends to introduce the fundamentals of supercapatteries and present recent progress in supercapattery development in terms of electrode and electrolyte materials, device design and engineering and performance advantages and limitations.…”

Section: Introductionmentioning

confidence: 99%

Supercapatteries as High-Performance Electrochemical Energy Storage Devices

Chen

2020

Electrochem. Energ. Rev.

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129

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The development of novel electrochemical energy storage (EES) technologies to enhance the performance of EES devices in terms of energy capacity, power capability and cycling life is urgently needed. To address this need, supercapatteries are being developed as innovative hybrid EES devices that can combine the merits of rechargeable batteries with the merits of supercapacitors into one device. Based on these developments, this review will present various aspects of supercapatteries ranging from charge storage mechanisms to material selection including electrode and electrolyte materials. In addition, strategies to pair different types of electrode materials will be discussed and proposed, including the bipolar stacking of multiple supercapattery cells internally connected in series to enhance the energy density of stacks by reducing the number of bipolar plates. Furthermore, challenges for this stack design will also be discussed together with recent progress on bipolar plates.

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“…Supercapatteries can be coined based on the following two criteria, such as i) by pairing a battery electrode with a supercapacitor electrode or ii) from materials that possess both the Nernstian and capacitive charge storage capacities. [18] At this juncture, the capacitive electrode delivers high power density by the formation of electric double layer, while the battery electrode delivers an increased energy density. Thus, the flexible supercapatteries can provide both high power and energy density in any form, such as bending, stretching, twisting, and folding modes.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

Surendran

Shanmugapriya

Sivanantham

et al. 2018

Advanced Energy Materials

263

144

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Functionalizing nanostructured carbon nanofibers (CNFs) with bimetallic phosphides enables the material to become an active electrode for multifunctional applications. A facile electrospinning technique is utilized for the first time to develop NiCoP nanoparticles encapsulated CNFs that are used as an energy storage system of supercapattery, and as an electrocatalyst for oxygen reduction, oxygen evolution, and hydrogen evolution reaction in KOH electrolyte. Evolving from the inclusion of bimetallic phosphide nanoparticles, the NiCoP/CNF electrode unveils superior‐specific capacitance (333 Fg−1 at 2 Ag−1) and rate capability (87%). The fabricated supercapattery device offers a voltage of 1.6 V that supplies a remarkable energy density (36 Wh kg−1) along with an improved power density (4000 W kg−1) and unwavering cyclic stability (25 000 cycles). Meanwhile, the NiCoP/CNF electrode has simultaneously performed well as a multifunctional electrocatalyst for oxygen reduction reaction at a half‐wave potential of 0.82 V versus reversible hydrogen electrode and can attain a current density of 10 mA cm−2 at a very low overpotential of 268 and 130 mV for the oxygen evolution reaction and hydrogen evolution reaction, respectively. Thus, the NiCoP/CNF with all its inimitable electrode properties has profoundly proved its proficiency at handling multifunctional challenges in terms of both storage and conversion.

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Fundamental Consideration for Electrochemical Engineering of Supercapattery

Cited by 16 publications

References 41 publications

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Supercapatteries as High-Performance Electrochemical Energy Storage Devices

Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

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