Fabrication and performance evaluation of button cell supercapacitors based on MnO2 nanowire/carbon nanobead electrodes

Ranjusha, R.; Ramakrishna, Seeram; Nair, A. Sreekumaran; Anjali, P.; Vineeth, S. K.; Sonia, T.; Sivakumar, N.; Subramanian, K. R. V.; Nair, Shantikumar V.; Balakrishnan, Avinash

doi:10.1039/c3ra41992d

Cited by 35 publications

(19 citation statements)

References 53 publications

(75 reference statements)

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“…Apart from the above discussed MnO x /carbon hybrid structures, amorphous carbon matrix holding MnO x nanoparticles or nanorods, and those with activated carbons, carbon nanoparticles or nanobeads, carbon aerogels, and mesoporous carbons have also been reported, in attempts to enhance the electrical conductivity of the MnO x ‐based supercapacitor electrodes.…”

Section: Mnox‐based Hybrid Electrodes For Supercapacitorsmentioning

confidence: 99%

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Wang

2018

Advanced Materials

100

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Of the transition metals, Mn has the greatest number of different oxides, most of which have a special tunnel structure that enables bulk redox reactions. The high theoretical capacitance and capacity results from a greater number of accessible oxidation states than other transition metals, wide potential window, and the high natural abundance make MnO species promising electrode materials for energy storage applications. Although MnO electrode materials have been intensely studied over the past decade, their electrochemical performance is still insufficient for practical applications. Currently, there is a trade-off between specific capacitance and loading mass. MnO species have intrinsically poor electrical conductivity, and current structural designs are not sophisticated enough to accommodate enough redox-active sites. Recent studies have certainly made progress in increasing capacitance through making use of electrically conductive components and controlling the morphology of the MnO species to expose more surface area. To increase the capacitance of MnO electrodes to the largest extent without limiting loading mass, further structural design at the nanoscale and manipulation of the electrically conductive component are required. An ideal nanostructure is proposed to guide future research toward closing the gap between achieved and theoretical capacitance, without limiting the loading mass.

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Section: Mnox‐based Hybrid Electrodes For Supercapacitorsmentioning

confidence: 99%

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Wang

2018

Advanced Materials

100

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“…The presence of redox peaks can be attributed to the intercalation and de-intercalation of OH -ions from the electrolyte. The possible faradaic reactions occurring on the surface can be shown as: [25,26] NiMoO 4 + yOH -+ e -↔ NiMoO 4-y . yOH -+ (1-y) NiMoO 4 + H 2 O+ e -…”

Section: Influence Of CV Scan Ratesmentioning

confidence: 99%

2 D amorphous frameworks of NiMoO4 for supercapacitors: defining the role of surface and bulk controlled diffusion processes

Ajay¹,

Paravannoor²,

Joseph³

et al. 2015

Applied Surface Science

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“…Figure 10(c) displays the constant current discharge performance of C-12 at different discharging currents. From these discharge curves, the energy density and power density was derived from the literature [26]. The obtained specific capacitance values were 897, 787 and 750 Fg -1 at discharge current densities of 0.6 Ag -1 , 6 Ag -1 and 12 Ag -1 , respectively.…”

Section: Page 11 Of 33mentioning

confidence: 99%

Mesoscopic architectures of Co(OH) 2 spheres with an extended array of microporous threads as pseudocapacitor electrode materials

Pillai¹,

Rajagopalan²,

Amruthalakshmi³

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Fabrication and performance evaluation of button cell supercapacitors based on MnO2 nanowire/carbon nanobead electrodes

Cited by 35 publications

References 53 publications

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

Manganese‐Oxide‐Based Electrode Materials for Energy Storage Applications: How Close Are We to the Theoretical Capacitance?

2 D amorphous frameworks of NiMoO4 for supercapacitors: defining the role of surface and bulk controlled diffusion processes

Mesoscopic architectures of Co(OH) 2 spheres with an extended array of microporous threads as pseudocapacitor electrode materials

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