Perforated mesoporous NiO nanostructures for an enhanced pseudocapacitive performance with ultra-high rate capability and high energy density

Kitchamsetti, Narasimharao; Chikate, Parameshwar R.; Patil, Ranjit A.; Ma, Yuan‐Ron; Shirage, Parasharam M.; Devan, Rupesh S.

doi:10.1039/c9ce01475f

Cited by 35 publications

(9 citation statements)

References 56 publications

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“…Nickel oxides with molecular formulas of NiO, NiO 2 , and Ni 2 O 3 can be engineered to obtain cubic, monoclinic, rhombohedral, and hexagonal crystalline phases. 364–369 Mainly, p-type semiconducting stoichiometric NiO with a wide bandgap of 3.6–4 eV 65,370,371 and deep valence band edge ( i.e. , −5.2 to −5.4 eV) provides excellent band alignment with the perovskite light absorber.…”

Section: Hole Transport Layer (Htl)mentioning

confidence: 99%

Understanding the role of inorganic carrier transport layer materials and interfaces in emerging perovskite solar cells

et al. 2022

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Section: Hole Transport Layer (Htl)mentioning

confidence: 99%

Understanding the role of inorganic carrier transport layer materials and interfaces in emerging perovskite solar cells

et al. 2022

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“…In Figure 4 d, the well-redox peaks observed at 0.4 V and 0.2 V indicate the faradaic reaction of Co 2+ /Co 3+ and Ni 2+ /Ni 3+ . The reversible faraday reactions between the electrode and electrolyte interface can be described by the following redox Reactions (5) and (6) [ 9 ]. Ni(OH) 2 + OH − ↔ NiOOH + H 2 O Co(OH) 2 + OH − ↔ CoOOH + H 2 O …”

Section: Resultsmentioning

confidence: 99%

“…EDLCs can store charge based on physical charge accumulation and non-faradaic mechanisms. Due to their large surface area, good electric conductivity, and easy accessibility, carbon nanomaterials with inherent porous structures are utilized to drive highly accessible electrolyte penetration [ 5 , 6 , 7 , 8 , 9 ]. Another side, the charge storage in pseudo-capacitors depends on the fast and reversible faradaic redox reactions on the surface of electroactive materials.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Hierarchically Grown Flake-like NiCo Layered Double Hydroxide Nanosheets on Transitioned Polystyrene towards Triboelectricity-Driven Self-Charging Hybrid Supercapacitors

Kitchamsetti

Cho

et al. 2023

Polymers

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Recently, there is a need to explore the utilization of various heterostructures using the designed nanocomposites and tuning the surfaces of electrodes for improving the electrochemical performance of supercapacitors (SC). In this work, a novel approach is successfully employed through a facile two-step synthetic route with the assistance of a microwave for only 1 min. Depending on the glass transition of a polystyrene (PS) substrate and electrochemical deposition (ECD) of electroactive Ni-Co layered double hydroxides (LDHs), a hierarchically designed flake-like morphology can be readily prepared to enhance the surface-active sites, which allows a rhombohedral Ni-Co LDHs electrode to obtain superior electrochemical properties. Further, the interactions between electrode and electrolyte during the diffusion of ions are highly simplified using multiple enhanced electroactive sites and shorter pathways for electron transfer. The unique surface architecture of the PS substrate and the synergistic effect of the bimetallic components in Ni-Co LDHs enable this substrate to obtain desired electrochemical activity in charge storage systems. The optimized MWC Co0.5Ni0.5 electrode exhibited an areal capacity of 100 µAh/cm2 at a current density of 1 mA/cm2 and a remarkable capacity retention of 91.2% over 5000 continuous charging and discharging cycles due to its remarkable synergistic effect of abundant faradaic redox reaction kinetics. The HSC device is assembled with the combination of optimized MWC Co0.5Ni0.5 and activated carbon as a positive and negative electrode, respectively. Further, the electrochemical test results demonstrated that MWC Co0.5Ni0.5 //AC HSC device showed a high areal capacitance of 531.25 mF/cm2 at a current density of 5 mA/cm2. In addition, the fabricated an aqueous HSC device showed a power density of 16 mW/cm2 at an energy density of 0.058 mWh/cm2, along with the remarkable capacity retention of 82.8% even after 10,000 continuous charging and discharging cycles. Moreover, the assembled hybrid supercapacitor (HSC) device is integrated with a triboelectric nanogenerator (TENG) for the development of energy conversion and storage systems. Not only an extensive survey of materials but also an innovative solution for recent progress can confirm the wide range of potential SC applications. Remarkably, this study is a new way of constructing self-powered energy storage systems in the field of sustainable wearable electronics and future smart sensing systems.

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“…The less intensity peak at 531.1 eV is assigned to the surface contamination, in the form of carbon or hydroxides, etc. [ 28 , 32 ]. In general, the XPS study validates the formation of stoichiometric MTO nanodiscs.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

Kitchamsetti

Didwal

Mulani

et al. 2021

Heliyon

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MTO nanodiscs synthesized using the hydrothermal approach were explored for the photocatalytic removal of methylene blue (MB), rhodamine B (RhB), congo red (CR), and methyl orange (MO). The disc-like structures of ~16 nm thick and ~291 nm average diameter of stoichiometric MTO were rhombohedral in nature. The MTO nanodiscs delivered stable and recyclable photocatalytic activity under Xe lamp irradiation. The kinetic studies showed the 89.7, 80.4, 79.4, and 79.4 % degradation of MB, RhB, MO, and CR at the rate constants of 0.011(±0.001), 0.006(±0.001), 0.007(±0.0007), and 0.009 (±0.0001) min −1 , respectively, after the 180 min of irradiation. The substantial function of photogenerated holes and hydroxide radicals pertaining to the dye removal phenomena is confirmed by radical scavenger trapping studies. Overall, the present studies provide a way to develop pristine and heterostructure perovskite for photocatalysts degradation of various organic wastes.

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Perforated mesoporous NiO nanostructures for an enhanced pseudocapacitive performance with ultra-high rate capability and high energy density

Abstract: The morphology of NiO (1D nanobelts and 2D nanosheets) has a significant effect on the pseudocapacitive performance. The perforated and interlinked mesoporous structure of NiO nanobelts delivered higher power and energy density than nanosheets.

Cited by 35 publications

References 56 publications

Understanding the role of inorganic carrier transport layer materials and interfaces in emerging perovskite solar cells

Understanding the role of inorganic carrier transport layer materials and interfaces in emerging perovskite solar cells

Microwave-Assisted Hierarchically Grown Flake-like NiCo Layered Double Hydroxide Nanosheets on Transitioned Polystyrene towards Triboelectricity-Driven Self-Charging Hybrid Supercapacitors

Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

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