New generation of hybrid carbon/Ni(OH)2 electrochemical capacitor using functionalized carbon electrode

Comte, Annaïg Le; Brousse, Thierry; Bélanger, Daniel

doi:10.1016/j.jpowsour.2016.03.065

Cited by 33 publications

(22 citation statements)

References 36 publications

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“…The concept of hybrid supercapacitors has therefore been proposed. A hybrid supercapacitor combines a capacitive electrode and a faradaic electrode operating in either aqueous [1] or organic-based electrolytes [2]. Driven by the concern for increased safety, aqueous-based hybrid supercapacitors have attracted much interest over the last two decades.…”

Section: Introductionmentioning

confidence: 99%

“…The limited potential window of operation of the positive electrode enables the activated carbon-negative electrode to be operated in a much larger potential window compared to a symmetrical EDLC design in the same electrolyte. Since the capacitance ( C in F·g −1 ) of the carbon electrode is the same as in a standard EDLC and since the potential window is increased (∆ U in V), the resulting capacity ( Q in C·g −1 ) is concomitantly increased [1,3,4] according to the well-known equation:

Q = C \times Δ U

…”

Section: Introductionmentioning

confidence: 99%

“…The design of full hybrid cells is out of the scope of the present paper and will not be treated. The papers from Zheng et al, Le Comte et al, as well as the handbook of Beguin et al give a full explanation on the determination of the performance of hybrid devices (energy and power densities …) [1,3,11]. …”

Section: Introductionmentioning

confidence: 99%

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Ni(OH)2 and NiO Based Composites: Battery Type Electrode Materials for Hybrid Supercapacitor Devices

et al. 2018

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Nanocomposites of Ni(OH)2 or NiO have successfully been used in electrodes in the last five years, but they have been falsely presented as pseudocapacitive electrodes for electrochemical capacitors and hybrid devices. Indeed, these nickel oxide or hydroxide electrodes are pure battery-type electrodes which store charges through faradaic processes as can be shown by cyclic voltammograms or constant current galvanostatic charge/discharge plots. Despite this misunderstanding, such electrodes can be of interest as positive electrodes in hybrid supercapacitors operating under KOH electrolyte, together with an activated carbon-negative electrode. This study indicates the requirements for the implementation of Ni(OH)2-based electrodes in hybrid designs and the improvements that are necessary in order to increase the energy and power densities of such devices. Mass loading is the key parameter which must be above 10 mg·cm−2 to correctly evaluate the performance of Ni(OH)2 or NiO-based nanocomposite electrodes and provide gravimetric capacity values. With such loadings, rate capability, capacity, cycling ability, energy and power densities can be accurately evaluated. Among the 80 papers analyzed in this study, there are indications that such nanocomposite electrode can successfully improve the performance of standard Ni(OH)2 (+)//6 M KOH//activated carbon (−) hybrid supercapacitor.

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Section: Introductionmentioning

confidence: 99%

Q = C \times Δ U

…”

Section: Introductionmentioning

confidence: 99%

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Ni(OH)2 and NiO Based Composites: Battery Type Electrode Materials for Hybrid Supercapacitor Devices

et al. 2018

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“…Experimental results were fit by using an equivalent circuit, as shown in inset of Figure 4d. [34] Accordingly, ESR values of approximately 0.55 and 0.64 W · cm À2 were obtained for Fe 3 40] sample shows its higher electrical conductivity due to inclusion of rGO NSs. The obtained results from fitting have been summarized in Table 1.…”

Section: Electrochemical Evaluationmentioning

confidence: 92%

Anchored Fe₃O₄ Nanoparticles on rGO Nanosheets as High‐Power Negative Electrodes for Aqueous Batteries

et al. 2017

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Fe 3 O 4 nanoparticles were anchored on GO nanosheets and evaluated as negative electrode materials for high-performance aqueous batteries. The prepared samples were characterized by using XRD, Raman spectroscopy, TGA, and TEM. The energystorage behavior of the samples was investigated by testing high-mass-loaded (ca. 8.5 mg · cm À2 ) Fe 3 O 4 ÀrGO electrodes with different electrochemical techniques, including cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy. The nanocomposites showed better electrochemical storage properties than pure Fe 3 O 4 nanoparticles and rGO nanosheets, suggesting superior performance through synergistic effects. Accordingly, the Fe 3 O 4 ÀrGO nanocomposite with an optimized composition of [60 : 40] showed a maximum capacity of 402 C · g À1 (111.6 mA · h · g À1 ) and superior rate capability (ca. 40 % capacity retention with a 20-fold increase in scan rate) compared to the pure oxide. To further evaluate the applicability of the Fe 3 O 4 ÀrGO nanocomposite, aqueous batteries based on the Fe 3 O 4 ÀrGO [60 : 40] nanocomposite as negative electrodes and NiCoMnO 4 as positive electrodes were assembled and examined by using various electrochemical techniques. Fe 3 O 4 ÀrGO//NiCoMnO 4 cells demonstrated a maximum specific energy of 26 Wh · kg À1 and a maximum specific power of 6.8 kW · kg À1 , with a desirable rate capability. All of the obtained results suggest the Fe 3 O 4 ÀrGO nanocomposite as a promising negative electrode material for high-power aqueous batteries.[a] J.

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“…53 The grafting of 9,10-phenanthrenequinone on Black Pearls has been shown to lead to a significant improvement of the charge storage performance of a carbon/Ni(OH) 2 hybrid electrochemical capacitor. 54 This is illustrated in Figure 4 by the increase of the voltammetric charge of the negative carbon electrode. Interestingly, a good charge recovery can be maintained at relatively high cycling rate.…”

Section: Stability Of the Faradaic Contribution Over Long-time Cyclingmentioning

confidence: 96%

Grafting of Quinones on Carbons as Active Electrode Materials in Electrochemical Capacitors

Brousse¹,

Cougnon²,

Bélanger³

2018

J. Braz. Chem. Soc.

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The electrochemical performance of electrochemical capacitors can be improved with electroactive quinone molecules. Systems based on redox active electrolyte as well as physisorbed and chemically grafted molecules have been investigated. In all these cases, carbon materials were used as substrate and electrode material. This short review will mainly describe work related to these systems and materials from the authors' laboratories. Nonetheless, some important studies from other research groups will be discussed.

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New generation of hybrid carbon/Ni(OH)2 electrochemical capacitor using functionalized carbon electrode

Cited by 33 publications

References 36 publications

Ni(OH)2 and NiO Based Composites: Battery Type Electrode Materials for Hybrid Supercapacitor Devices

Ni(OH)2 and NiO Based Composites: Battery Type Electrode Materials for Hybrid Supercapacitor Devices

Anchored Fe₃O₄ Nanoparticles on rGO Nanosheets as High‐Power Negative Electrodes for Aqueous Batteries

Grafting of Quinones on Carbons as Active Electrode Materials in Electrochemical Capacitors

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New generation of hybrid carbon/Ni(OH)2 electrochemical capacitor using functionalized carbon electrode

Cited by 33 publications

References 36 publications

Ni(OH)2 and NiO Based Composites: Battery Type Electrode Materials for Hybrid Supercapacitor Devices

Ni(OH)2 and NiO Based Composites: Battery Type Electrode Materials for Hybrid Supercapacitor Devices

Anchored Fe3O4 Nanoparticles on rGO Nanosheets as High‐Power Negative Electrodes for Aqueous Batteries

Grafting of Quinones on Carbons as Active Electrode Materials in Electrochemical Capacitors

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Anchored Fe₃O₄ Nanoparticles on rGO Nanosheets as High‐Power Negative Electrodes for Aqueous Batteries