Voltage holding and self-discharge phenomenon in ZnO-Co3O4 core-shell heterostructure for binder-free symmetric supercapacitors

Mishra, Rajneesh Kumar; Choi, Gyu Jin; Choi, Hyeon Jong; Singh, Jay; Mirsafi, Fateme Sadat; Rubahn, Horst‐Günter; Mishra, Yogendra Kumar; Lee, Seung Hee

doi:10.1016/j.cej.2021.131895

Cited by 57 publications

(18 citation statements)

References 65 publications

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“…[95] As shown in Figure 12a ical performance, with a specific capacitance of 177.0 F/g and an energy density of 39.3 Wh/kg, Power density (19064.3 W/kg) and excellent cycle stability maintain 92.8% of the original performance after 10000 constant current charging and discharging cycles (Figure 12b ~d). [96] The combination of nickel foam as a self-supporting skeleton can increase the contact area between electrodes and electrolytes, expose more electroactive reaction sites and shorten the transport path of charge and ion diffusion. Hu et al therefore synthesized flower-shaped ZnO/Co 3 O 4 nanobeam arrays grown on nickel foam by a simple one-step hydrothermal method.…”

Section: Co 3 O 4 Based Binary Oxide (Hydroxide) Compositesmentioning

confidence: 99%

Recent Progress in Co₃O₄‐Based Nanomaterials for Supercapacitors

Liu

Yang

et al. 2023

ChemNanoMat

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Supercapacitors which have been widely used in portable electronics and hybrid electric vehicles are considered to be fascinating energy storage devices owing to their higher energy density than traditional capacitors and higher power density than batteries. The performance of supercapacitors is much dependent on the properties of the used electrode materials, and much effort has been devoted to exploring high‐performance electrodes. During the past decade, cobalt‐based materials, especially Co3O4 and its composites, have been regarded as prominent electrode materials for supercapacitors in view of their relatively low cost, high theoretical specific capacitance, non‐toxicity, and excellent electrochemical activity. In this review, we attempt to provide some basic insights into the rational design of Co3O4 based materials/composites and their capacitive properties for supercapacitors. The electrochemical advantages of Co3O4 as a supercapacitor material are summarized, and many examples are illustrated. The remaining challenges in exploration of Co3O4‐based materials as efficient electrodes for supercapacitors are also discussed and the future research directions are offered.

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Section: Co 3 O 4 Based Binary Oxide (Hydroxide) Compositesmentioning

confidence: 99%

Recent Progress in Co₃O₄‐Based Nanomaterials for Supercapacitors

Liu

Yang

et al. 2023

ChemNanoMat

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“…Nanostructured electrodes present specific properties owing to their structure-dependent benefits in expediting the reaction kinetics of the diffusion activity and attaining cyclic stability. Various electrode materials with low dimensional architectures (0D, 1D, 2D, and 3D) and hierarchical and hollow nanostructures have been widely designed and applied in this area [ 30 , 31 , 32 , 33 ]. Electrode materials are the main components in the development of high-efficiency supercapacitors for next-generation portable electronic devices.…”

Section: Supercapacitorsmentioning

confidence: 99%

Cellulose-Derived Nanostructures as Sustainable Biomass for Supercapacitors: A Review

Kumar

2022

Polymers

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Sustainable biomass has attracted a great attention in developing green renewable energy storage devices (e.g., supercapacitors) with low-cost, flexible and lightweight characteristics. Therefore, cellulose has been considered as a suitable candidate to meet the requirements of sustainable energy storage devices due to their most abundant nature, renewability, hydrophilicity, and biodegradability. Particularly, cellulose-derived nanostructures (CNS) are more promising due to their low-density, high surface area, high aspect ratio, and excellent mechanical properties. Recently, various research activities based on CNS and/or various conductive materials have been performed for supercapacitors. In addition, CNS-derived carbon nanofibers prepared by carbonization have also drawn considerable scientific interest because of their high conductivity and rational electrochemical properties. Therefore, CNS or carbonized-CNS based functional materials provide ample opportunities in structure and design engineering approaches for sustainable energy storage devices. In this review, we first provide the introduction and then discuss the fundamentals and technologies of supercapacitors and utilized materials (including cellulose). Next, the efficacy of CNS or carbonized-CNS based materials is discussed. Further, various types of CNS are described and compared. Then, the efficacy of these CNS or carbonized-CNS based materials in developing sustainable energy storage devices is highlighted. Finally, the conclusion and future perspectives are briefly conferred.

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“…Among these materials, the low-cost ZnO shows intriguing characteristics such as high carrier mobility, long carrier diffusion, ease of synthesis on substrates, and non-toxicity. 13,14 As a result, ZnO has been widely used in charge transfer applications such as photovoltaic, 15 photocatalysis, 16 and gas sensors. 17 It has electron transporting and hole blocking characteristics and readily generates photoexcited electrons on light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Stacked vanadium pentoxide–zinc oxide interface for optically-chargeable supercapacitors

et al. 2023

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Voltage holding and self-discharge phenomenon in ZnO-Co3O4 core-shell heterostructure for binder-free symmetric supercapacitors

Cited by 57 publications

References 65 publications

Recent Progress in Co₃O₄‐Based Nanomaterials for Supercapacitors

Recent Progress in Co₃O₄‐Based Nanomaterials for Supercapacitors

Cellulose-Derived Nanostructures as Sustainable Biomass for Supercapacitors: A Review

Stacked vanadium pentoxide–zinc oxide interface for optically-chargeable supercapacitors

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Voltage holding and self-discharge phenomenon in ZnO-Co3O4 core-shell heterostructure for binder-free symmetric supercapacitors

Cited by 57 publications

References 65 publications

Recent Progress in Co3O4‐Based Nanomaterials for Supercapacitors

Recent Progress in Co3O4‐Based Nanomaterials for Supercapacitors

Cellulose-Derived Nanostructures as Sustainable Biomass for Supercapacitors: A Review

Stacked vanadium pentoxide–zinc oxide interface for optically-chargeable supercapacitors

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Product

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Recent Progress in Co₃O₄‐Based Nanomaterials for Supercapacitors

Recent Progress in Co₃O₄‐Based Nanomaterials for Supercapacitors