Comparative Study on Morphological and Electrochemical Properties of Nickel–Cobalt Double Hydroxide, Cobalt Hydroxide, and Nickel Hydroxide

Kim, Kyung Ho; Motoyama, Sena; Abe, Yoshio; Kawamura, Midori; Kiba, Takayuki

doi:10.1007/s11664-019-07051-7

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…28 However, obtaining a material with rationally designed morphology enhances the electrode stability and performance depending on the architecture of the electrode materials. [29][30][31][32] Between the top-down and bottom-up techniques of material synthesis, the top-down approach is restricted for many applications as the precursor needs to be layered, and hazardous chemicals are required for exfoliation. 33 In contrast, bottom-up approaches like hydrothermal, chemical vapour deposition, solution-based synthesis, hot injection, electrodeposition, etc.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the effect of growth time on bifunctional layered hydroxide electrodes for high-performance energy storage and green energy conversion

Das,

Nardekar,

Kesavan

et al. 2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Unveiling the effect of growth time on bifunctional layered hydroxide electrodes for high-performance energy storage and green energy conversion

Das,

Nardekar,

Kesavan

et al. 2024

J. Mater. Chem. A

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“…Some layered hydroxides have a large number of active surface groups or hydroxyl groups, which contribute to the adsorption of probe molecules, thus displaying a particular SERS activity. For example, cobalt hydroxide [Co(OH) 2 ] materials have a rich layered structure and a specific surface area, which can provide more active sites . However, the SERS effect of high performance was difficult to achieve with a single Co(OH) 2 material.…”

Section: Introductionmentioning

confidence: 99%

“…For example, cobalt hydroxide [Co(OH) 2 ] materials have a rich layered structure and a specific surface area, which can provide more active sites. 31 However, the SERS effect of high performance was difficult to achieve with a single Co(OH) 2 material. Because the SERS effect of semiconductors and other non-noble metal materials is mainly attributable to the charge transfer mechanism (CT) between the substrates and adsorbates.…”

Section: ■ Introductionmentioning

confidence: 99%

Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)₂ Nanoflower Arrays for Surface-Enhanced Raman Scattering

Fan

Huang

et al. 2023

Inorg. Chem.

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A simple and reliable method is developed to fabricate Ag-nanoparticle-decorated Co(OH)2 nanoflowers grafted on polyacrylonitrile (PAN) nanopillar arrays as uniform and sensitive surface-enhanced Raman scattering (SERS) substrates. First, Co(OH)2-nanosheet-assembled nanoflowers are achieved on the highly uniform PAN nanopillar arrays via electrochemical deposition. Then, Ag nanoparticles (Ag-NPs) are decorated onto the Au-nanoparticle-precoated Co(OH)2 nanoflowers based on a spontaneous redox reaction (SRR) between the silver ions and Co(OH)2 nanosheets at room temperature. Ag-NPs can be successfully in situ synthesized on the Co(OH)2 nanoflowers, and Au nanoparticles precoated on the surface of the Co(OH)2 nanosheets can ensure that the Co(OH)2 nanoflower structure does not collapse. Because of the highly uniform PAN nanopillar arrays and the high-density sub-10 nm gaps between the neighboring Ag-NPs on the surface of the Co(OH)2 nanoflowers, the hierarchical three-dimensional Ag@Co(OH) x grown on PAN nanopillar arrays can produce a reproducible and sensitive SERS effect. To verify the SERS performance of the substrate, 4-aminothiophenol (4-ATP) is used as the probe molecule, and the Ag@Co(OH) x grown on PAN nanopillar arrays is employed as the SERS substrate. As a result, 4-ATP concentrations as low as 10–10 M can still be identified, exhibiting high SERS activity. Additionally, the relative standard deviation value of the main characteristic peak of 10–5 M 4-ATP is 9.43%, indicating good uniformity of the SERS signal of the substrate. The SRR between silver ions and Co(OH)2 can provide a simple route to prepare heterostructures as SERS substrates, which has great potential for application in the field of analysis.

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Electrochemical Performance of Flexible Electrodes for Supercapacitors, Lithium‐Ion Batteries, and Sodium‐Ion Batteries

Xiao,

Li,

Pan

et al. 2024

ChemistrySelect

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In summary, Ni(OH)2 nanoflowers (Ni(OH)2 NFs) and Ni(OH)2 nanoflowers grown on Ni foan (Ni(OH)2 NFs@NF) were synthesised using a one‐step hydrothermal process. In energy storage applications, the Ni(OH)2 NFs@NF can be a useful electrode material. When utilized as a supercapacitor electrode material, the Ni(OH)2 NFs@NF shows a discharge specific capacity of 100.0 F g−1, which is greater than that of pure Ni(OH)2 NFs (27.3 F g−1) at an applied current density of 0.4 A g−1. In lithium‐ion batteries (LIBs), the Ni(OH)2 NFs@NF composite is used as an anode and has primordial discharge and charge capacities of 1595.2 and 1104.3 mAh g−1, individually. Lithium‐ion batteries are made possible by the Ni(OH)2 NFs@NF anode, which has an amazing capacity of 213.8 mAh g−1 after 50 cycles. Ni(OH)2 NFs@NF are employed as sodium ion batteries(SIBs) anodes, and Ni(OH)2 NFs@NF has 440.0 and 217.9 mAh g−1 for the primal discharge and charge capacities, individually. The Ni(OH)2 NFs@NF anode with a high capacity of 122.7 mAh g−1 following 50 cycling numbers allows for construction of lithium ion batteries,Ni(OH)2 NFs@NF has better sodium and lithium ion storage capacity than Ni(OH)2 NFs.The content of this study is intended to provide a reference for future research on nickel hydroxide flexible electrodes.

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Comparative Study on Morphological and Electrochemical Properties of Nickel–Cobalt Double Hydroxide, Cobalt Hydroxide, and Nickel Hydroxide

Cited by 8 publications

References 23 publications

Unveiling the effect of growth time on bifunctional layered hydroxide electrodes for high-performance energy storage and green energy conversion

Unveiling the effect of growth time on bifunctional layered hydroxide electrodes for high-performance energy storage and green energy conversion

Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)₂ Nanoflower Arrays for Surface-Enhanced Raman Scattering

Electrochemical Performance of Flexible Electrodes for Supercapacitors, Lithium‐Ion Batteries, and Sodium‐Ion Batteries

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Comparative Study on Morphological and Electrochemical Properties of Nickel–Cobalt Double Hydroxide, Cobalt Hydroxide, and Nickel Hydroxide

Cited by 8 publications

References 23 publications

Unveiling the effect of growth time on bifunctional layered hydroxide electrodes for high-performance energy storage and green energy conversion

Unveiling the effect of growth time on bifunctional layered hydroxide electrodes for high-performance energy storage and green energy conversion

Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)2 Nanoflower Arrays for Surface-Enhanced Raman Scattering

Electrochemical Performance of Flexible Electrodes for Supercapacitors, Lithium‐Ion Batteries, and Sodium‐Ion Batteries

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Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)₂ Nanoflower Arrays for Surface-Enhanced Raman Scattering