Thorn-shaped NiCo2O4 nanoparticles as multi-functional electrocatalysts for electrochemical applications

Sreekanth, T.V.M.; Yoo, Kisoo; Kim, J.

doi:10.1016/j.jtice.2020.09.006

Cited by 12 publications

(5 citation statements)

References 52 publications

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“…Figure 3a 33,34 Figure 3e is the high-resolution spectra of Co 2p, the binding energies at 779.5 eV and 794.5 eV can be corresponded to Co 3+ , while the peaks located at 781.0 eV and 760.2 eV belong to Co 2+ . 35,36 Likewise, the Cu 2 P spectrum in Fig. 3f displays the major Cu 2p 3/2 and Cu 2p 1/2 peaks, with the peaks centered at 933.2 eV and 953.1 eV attributing to the Cu + , and the peaks at 934.7 eV and 954.5 eV belonging to Cu 2+ .…”

Section: Resultsmentioning

confidence: 95%

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo₂O₄ Nanosheets Wrapped CuO Nanowires

Zhao¹,

Huang²,

Long³

et al. 2022

J. Electrochem. Soc.

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A type of NiCo2O4-based hierarchically-nanostructured composite has been synthesized for electrooxidation of glucose. The Cu(OH)2 nanowires were initially growth in-situ on the surface of Cu foam (CF) and wrapped with Ni-Co precursor (Ni-Co Pre) to prepare nanocomposites (Ni-Co Pre@Cu(OH)2 NWs/CF). Then, the obtained composites were annealed in air to form the NiCo2O4 nanosheets wrapped CuO nanowires nanostructures which were supported on the Cu foam (NiCo2O4@CuO NWs/CF). Because of the synergism of Ni, Co, and Cu, as well as the enhanced surface area by hierarchical nanostructure, the as-prepared NiCo2O4@CuO NWs/CF sensor exhibits outstanding electrooxidation activity for glucose detection, including high sensitivity (7.98 μA/μM/cm2), wide linear range (1.0×10-3-2.0 mM), low detection limit (0.68 μM), and fast response/recovery times (1.3/2.0 s). Meanwhile, the as-fabricated sensor also possesses good reproducibility, flexibility, selectivity, and long-term stability, which is a promising platform for glucose electrooxidation and determination in serum sample.

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Section: Resultsmentioning

confidence: 95%

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo₂O₄ Nanosheets Wrapped CuO Nanowires

Zhao¹,

Huang²,

Long³

et al. 2022

J. Electrochem. Soc.

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“…Several diffraction peaks were noted at 18.91, 31.11, 36.71, 38.41, 44.51, 59.11, and 64.91 that can be ascribed to the (111), ( 220), (311), ( 222), (400), (511), and (440) crystallographic planes of cubic NiCo 2 O 4 , which is compatible with the standard card JCPDS # 01-073-1702. 37,[39][40][41] In addition to the peaks of NiCo 2 O 4 , Ag-NiCo 2 O 4 exhibited diffraction peaks at the two theta values of 37.71, 43.81, 63.71, 76.51 and 80.61, which are ascribed to the (111), ( 200), ( 220), ( 311) and (222) planes of cubic silver. 42 The XRD pattern of Ag/C is also given in Fig.…”

Section: Structural Study Of the Catalystmentioning

confidence: 99%

Augmented and sustained oxygen reduction reaction activity of NiCo₂O₄ by the incorporation of Ag

Nubla,

Anju,

et al. 2023

New J. Chem.

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“…Up to now, huge efforts have been invested in the development of nanostructured NiCo 2 O 4 materials, such as nanoparticles, nanorods, nanosheets, and nanoflowers, to increase the electrochemical performance. For example, Sun et al .…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, huge efforts have been invested in the development of nanostructured NiCo 2 O 4 materials, such as nanoparticles, 9 nanorods, 10 nanosheets, 11 and nanoflowers, 12 to increase the electrochemical performance. For example, Sun et al 11 successfully synthesized different morphologies of NiCo 2 O 4 nanosheets and nanoneedles and their hybrid nanostructures via a solvothermal method, exhibiting high specific capacitance values of 938.4, 1022.4, and 1347.4 F g −1 at 1 A g −1 , because nanocrystallization of NiCo 2 O 4 could shorten the diffusion pathways of the ion/electron and enlarge the active surface area.…”

Section: Introductionmentioning

confidence: 99%

NiCo₂O₄ Nanosheets on Hollow Carbon Nanofibers for Flexible Solid-State Supercapacitors

Liu

Raza

et al. 2022

ACS Appl. Nano Mater.

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The carbon nanofiber-based all-solid-state supercapacitors hold great promise in powering portable electronics, while the low specific capacitance and intrinsic fragility have hindered their practical application. Here, flexible N-doped hollow carbon nanofibers (HCNFs) were prepared using poly-(acrylonitrile-co-acrylamide) as a precursor by the coaxial electrospinning method. The leaf-like NiCo 2 O 4 nanosheets are located on the inner and outer walls of the carbon layer via a simple solvothermal method to construct 3D freestanding NiCo 2 O 4 / HCNFs electrodes for a flexible all-solid-state supercapacitor. The hollow structure of HCNFs provides both inner and outer surfaces for NiCo 2 O 4 nanosheets and shortens the distance of ion transportation. NiCo 2 O 4 /HCNFs possesses an enhanced specific capacitance of 1864.0 F g −1 at 1 A g −1 and a good capacitance retention capability of 91.7% after 5000 times cycling, which is one of the best reported cycling stabilities to date. The symmetrical all-solid-state supercapacitors (ASSCs) were directly prepared with NiCo 2 O 4 /HCNFs as an electrode without adding any conductive agents and binders, which have good flexibility and a maximum energy density of 44.3 W h kg −1 at a specific power of 814.8 W kg −1 . Five series-connected ASSCs assembled by NiCo 2 O 4 /HCNFs can lighten a "DHU" logo composed of 36 lightemitting diodes, indicating their potential application prospect in wearable and portable devices.

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Thorn-shaped NiCo2O4 nanoparticles as multi-functional electrocatalysts for electrochemical applications

Cited by 12 publications

References 52 publications

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo₂O₄ Nanosheets Wrapped CuO Nanowires

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo₂O₄ Nanosheets Wrapped CuO Nanowires

Augmented and sustained oxygen reduction reaction activity of NiCo₂O₄ by the incorporation of Ag

NiCo₂O₄ Nanosheets on Hollow Carbon Nanofibers for Flexible Solid-State Supercapacitors

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Thorn-shaped NiCo2O4 nanoparticles as multi-functional electrocatalysts for electrochemical applications

Cited by 12 publications

References 52 publications

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo2O4 Nanosheets Wrapped CuO Nanowires

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo2O4 Nanosheets Wrapped CuO Nanowires

Augmented and sustained oxygen reduction reaction activity of NiCo2O4 by the incorporation of Ag

NiCo2O4 Nanosheets on Hollow Carbon Nanofibers for Flexible Solid-State Supercapacitors

Contact Info

Product

Resources

About

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo₂O₄ Nanosheets Wrapped CuO Nanowires

Electrochemical Nonenzymatic Glucose Detection Based on the Nanostructures of NiCo₂O₄ Nanosheets Wrapped CuO Nanowires

Augmented and sustained oxygen reduction reaction activity of NiCo₂O₄ by the incorporation of Ag

NiCo₂O₄ Nanosheets on Hollow Carbon Nanofibers for Flexible Solid-State Supercapacitors