One-Dimensional NiSe–Se Hollow Nanotubular Architecture as a Binder-Free Cathode with Enhanced Redox Reactions for High-Performance Hybrid Supercapacitors

Subhadarshini, Suvani; Pavitra, E.; Raju, G. Seeta Rama; Chodankar, Nilesh R.; Goswami, Dipak Kumar; Huh, Yun Suk; Das, Poushali

doi:10.1021/acsami.0c05612

Cited by 36 publications

(43 citation statements)

References 57 publications

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“…It is worth mentioning that, specific capacitances can be calculated by various equations as mentioned in the literature in varying unit terms as well, however, recently researchers have initiated to use the equation given below explicitly for nonlinear charge–discharge curves [ 46,47 ]

\begin{matrix} C_{normals} = \frac{2 i_{m} \int V d t}{{(V_{normalf} - V_{normali})}^{2}} \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Adhikari

Seenivasan

et al. 2020

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traditional battery systems. [10,11] Practically, lower energy density bounds the applicability of supercapacitors over battery systems, leaving more room in developing high energy density supercapacitors without having to compromise the power competence. [12-14] A well-known approach offering such outstanding energy density is via fabrication of asymmetric supercapacitor device that focusses on the positive materials excellency exhibiting high specific capacitance and providing a broad potential window when combined with a double-layer type negative electrode material. [15-17] Co 3 O 4 , a pseudocapacitive metal oxide, belonging to the family of spinel is a promising positive active material in electrochemical energy storage devices owing to its high specific capacitance (3560 F g −1) theoretically with being earthabundant, cost-effective, and also environment friendly. [18-20] Pseudocapacitors follow faradaic redox electrochemical reactions on the material's surface through continuous intercalation/deintercalation of electrons or ions which makes the surface vulnerable to destruction resulting in lower efficiency of the electroactive material affecting the electrochemical cycles. [21-23] Therefore, much effort has been put forward to increase the efficiency and stability of the Co 3 O 4 structures through nanostructured, [18] heterostructured, [24,25] and core-shell type structures [26] to reduce the structural deterioration from Co 3 O 4 and increase the overall specific capacitances. For instance, a 3D hierarchical structure of CoWO 4 /Co 3 O 4 was developed that exhibited significantly high specific capacitance of 1728 F g −1 at a current density of 1 A g −1 retaining about 85.9% specific capacitance after 5000 cycles. [27] Paliwal and Meher design a heterostructure of Co 3 O 4 /NiCo 2 O 4 perforated nanosheets that delivers specific capacitance of 1767 F g −1 at a current density of 0.5 A g −1 maintaining 552 F g −1 capacitance at high current density 16 A g −1. Additionally, the asymmetric device composed of Co 3 O 4 /NiCo 2 O 4 ||N-rGO retains 93.8% areal capacitance after 10 000 operating cycles. [28] An excellent core-shell type CoO@Co 3 O 4 nanocrystals were grown solvothermally which delivered 3377 F g −1 specific capacitance at current density 2 A g −1 and the capacity retention was about 58.6% after 4000 charge-discharge cycles. [29] Lu et al. reported Co 3 O 4 /CoS core-shell nanosheets grown over Ni-foam by room temperature sulfurization process. The structure showed an improved specific capacitance as high as 1658 F g −1 at 1 A g −1 Designing of multicomponent transition metal oxide system through the employment of advanced atomic layer deposition (ALD) technique over nanostructures obtained from wet chemical process is a novel approach to construct rational supercapacitor electrodes. Following the strategy, core-shell type NiO/Co 3 O 4 nanocone array structures are architectured over Ni-foam (NF) substrate. The high-aspect-ratio Co 3 O 4 nanocones are hydrothermally grown over NF following the p...

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\begin{matrix} C_{normals} = \frac{2 i_{m} \int V d t}{{(V_{normalf} - V_{normali})}^{2}} \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Adhikari

Seenivasan

et al. 2020

Small

View full text Add to dashboard Cite

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“…Many researches highly concerned on the progress of storage system energetically responses prompt application [1,2]. When compared to various energy storage devices, electrochemical capacitors also called supercapacitor has come forward because of power density [3,4], long term service life [5,6] and low cost of the significant importance [7,8].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric polyhedron structured NiSe₂@MoSe₂ device for use as a supercapacitor

et al. 2021

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“…S13a, † the relevant equivalent circuit comprises the internal resistance (R s ), charge-transfer resistance (R ct ), Warburg resistance (W), and the capacitance (Q). 85 The R ct and R s values of the NiCo 2 Se 4 HMS electrode are 0.48 Ω and 0.91 Ω, respectively, whereas those for the NiCo 2 Se 4 MF electrode are 2.22 Ω and 0.72 Ω, respectively. Meanwhile, the slope of the NiCo 2 Se 4 HMS electrode is much higher than that of the NiCo 2 Se 4 MF electrode.…”

Section: Electrochemical Performance Of Nico 2 Se 4 Hmss and Bise Hmssmentioning

confidence: 98%

A self-templating scheme for the synthesis of NiCo₂Se₄ and BiSe hollow microspheres for high-energy density asymmetric supercapacitors

et al. 2022

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One-Dimensional NiSe–Se Hollow Nanotubular Architecture as a Binder-Free Cathode with Enhanced Redox Reactions for High-Performance Hybrid Supercapacitors

Cited by 36 publications

References 57 publications

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Asymmetric polyhedron structured NiSe₂@MoSe₂ device for use as a supercapacitor

A self-templating scheme for the synthesis of NiCo₂Se₄ and BiSe hollow microspheres for high-energy density asymmetric supercapacitors

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One-Dimensional NiSe–Se Hollow Nanotubular Architecture as a Binder-Free Cathode with Enhanced Redox Reactions for High-Performance Hybrid Supercapacitors

Cited by 36 publications

References 57 publications

Encapsulation of Co3O4 Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Encapsulation of Co3O4 Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Asymmetric polyhedron structured NiSe2@MoSe2 device for use as a supercapacitor

A self-templating scheme for the synthesis of NiCo2Se4 and BiSe hollow microspheres for high-energy density asymmetric supercapacitors

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Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Encapsulation of Co₃O₄ Nanocone Arrays via Ultrathin NiO for Superior Performance Asymmetric Supercapacitors

Asymmetric polyhedron structured NiSe₂@MoSe₂ device for use as a supercapacitor

A self-templating scheme for the synthesis of NiCo₂Se₄ and BiSe hollow microspheres for high-energy density asymmetric supercapacitors