Doping Effect of Cobalt on Various Properties of Nickel Oxide Prepared by Solution Combustion Method

Sharma, Khem Raj; Negi, N. S.

doi:10.1007/s10948-020-05753-2

Cited by 21 publications

(4 citation statements)

References 55 publications

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“…25 The major phase being the NiO phase was eminent from the high nickel content of the precursor. 26 The shifting of the reflections to lower angles is an indication of the increased crystallite size, 27 where the P-HC-NCA exhibited a shift by 0.2°, which is greater than that of LC-NCA. The minor reflections at ∼44.5°, 51.5°and 58.9°, and 64.7°may be attributed to Co 3 O 4 type impurity phases.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Kopuklu

Gómez-Martín

Winter

et al. 2021

ACS Sustainable Chem. Eng.

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Herein, we report a sacrificial carbon fiber (CF) template-assisted synthesis of LiNi0.8Co0.15Al0.05O2 (C-NCA) by the Pechini method. An anisotropic primary particle morphology with an interconnected microstructure is obtained, originating from local overheating and oxygen-deficient zones induced by combustion of the CFs during high-temperature lithiation. Moreover, the particles assembled around the CFs demonstrated denser packing compared to the reference bare NCA (B-NCA) synthetized in the absence of the CF template. The anisotropic surfaces facilitate ion transport and stabilize the structure for high voltage and temperature operation. C-NCA||Li metal cells exhibit a reversible capacity of 106 mA h g–1 at 10 C and are able to retain 96% of their initial capacity as the C-rate is reverted to 0.1 C. The state of health of C-NCA||graphite full cells remains at 70% after 200 cycles at 0.33 C within 2.8–4.3 V. The results outperform the B-NCA cell, exhibiting a significant loss over 66 cycles while delivering only 50% of its initial capacity. The synthesis method allows for a straightforward route for tailoring the particle size, shape, and crystallinity, enabling the development of stable nickel-rich cathode materials, even at an upper cutoff voltage of 4.5 V or an operating temperature of 60 °C.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Kopuklu

Gómez-Martín

Winter

et al. 2021

ACS Sustainable Chem. Eng.

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“…2 (a-d) shows the SEM micrographs of CoFe 2 − x Sm x O 4 (x = 0.0, 0.050, 0.075 and 0.1) ferrite NPs. The SEM images displays a ake type morphology with more porous structure [29][30]. These large pores are generated because of liberation of more gases at the time combustion process.…”

Section: Scanning Electron Microscope and Eds Analysismentioning

confidence: 99%

Facile synthesis of Samarium (Sm 3+ ) doped Cobalt-iron oxide nano ferrite as an advanced electrode material for supercapacitor applications

Khasim,

PASHA,

et al. 2024

Preprint

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Herein, we present the design and fabrication of samarium (Sm3+) doped cobalt-iron oxide ferrites nanocomposites for utilization as an efficient energy storage material. We have employed a simple, low cost and quick one step solution combustion method used to synthesize CoFe2 − xSmxO4 (x = 0.0, 0.050, 0.075 and 0.1) ferrites composites. The synthesized CoFe2 − xSmxO4 NPs undergo different analytical and spectroscopic characterizations methods like scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and ultraviolet visible (UV-visible) analytical and spectroscopic methods that used to confirm the morphological and structural properties of the synthesized NPs. The electrochemical properties synthesized ferrites composites were significantly improved after inclusion of rare earth (RE) metal such as samaniuim (Sm3+) nanoparticles (NPs) into the host cobalt-iron-oxide. It was notice that the creation of single phase in pure CoFe2 − xSmxO4 ferrite remains unaltered by the mechanism of doping even in the ferrites composite. Nevertheless, doping of RE metal significantly influences over the morphological and structural properties, further more enhancement in the electrochemical performance of samarium doped CoFe2 − xSmxO4 ferrite composite. The highest specific capacity about 850 F/g was achieved for CoFe2 − xSmxO4 (x = 0.1) composite electrode material, which shows more superior in compare to pure CoFe2 − xSmxO4 (x = 0) which is about 340 F/g. However, CoFe2 − xSmxO4 (x = 0.1) composite shows a superior capacitance retention of the order of 98% even after 5000 cycles of operation at a scan rate of 250 mV/s. The electrode material fabricated by using CoFe2 − xSmxO4 ferrite composites behave as positive electrode and at the same time activated nickel behave as negative electrode which is render an energy density of 30.16 Wh/kg at a power density of 400 Wh/kg. The results obtained in presented studies offer a hopeful way for the fabrication high-performance electrode material for supercapacitor which is more suitable for light weight electronic devices, electric vehicles, and forthcoming generation supercapacitor applications.

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“…Other modes like 1TO at near 330 and 367 cm -1 correspond to stretching modes of NiO. [35] The surface morphology and microstructure of the as-prepared MOFs as well as their corresponding derivatives were studied under the field emission scanning electron microscopy (FESEM) analysis. As shown in Figure 2a 1 -e 2 ; Figure S3a 1 -e 1 , Supporting Information, it can be observed that Co 1 -MOF sample is composed of large-scale blocks, while the other Ni contained MOFs exhibit rod-like morphology with a smooth surface and the aspect ratio is changed gradually with the increase of Ni molar ratio.…”

Section: Structural Characterizationsmentioning

confidence: 99%

Highly Efficient and Selective Visible‐Light Driven Photoreduction of CO₂ to CO by Metal–Organic Frameworks‐Derived NiCoO Porous Microrods

Yang

Zhang

Luo

et al. 2022

Small

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Photocatalytic CO2 reduction by solar energy into carbonaceous feedstock chemicals is recognized as one of the effective ways to mitigate both the energy crisis and greenhouse effect, which fundamentally relies on the development of advanced photocatalysts. Here, the exploration of porous microrod photocatalysts based on novel NiCoO solid solutions derived from bimetallic metal–organic frameworks (MOFs) is reported. They exhibit overall enhanced photocatalytic performance with both high activity and remarkable selectivity for reducing CO2 into CO under visible‐light irradiation, which are superior to most related photocatalysts reported. Accordingly, the Ni0.2‐Co0.8‐O microrod (MR‐N0.2C0.8O) photocatalyst delivers high efficiency for photocatalytic CO2 reduction into CO at a rate up to ≈277 µmol g–1 h–1, which is ≈35 times to that of its NiO counterpart. Furthermore, they display a high selectivity of ≈85.12%, which is not only better than that of synthesized Co3O4 (61.25%) but also superior to that of reported Co3O4‐based photocatalysts. It is confirmed that the Co and Ni species are responsible for CO2CO conversion activity and selectivity, respectively. In addition, it is verified, by adjusting the Ni contents, that the band structure of NiCoO microrods can be tailored with favorable reduction band potentials, which thus enhance the selectivity toward CO2 photoreduction.

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Doping Effect of Cobalt on Various Properties of Nickel Oxide Prepared by Solution Combustion Method

Cited by 21 publications

References 55 publications

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Facile synthesis of Samarium (Sm 3+ ) doped Cobalt-iron oxide nano ferrite as an advanced electrode material for supercapacitor applications

Highly Efficient and Selective Visible‐Light Driven Photoreduction of CO₂ to CO by Metal–Organic Frameworks‐Derived NiCoO Porous Microrods

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Doping Effect of Cobalt on Various Properties of Nickel Oxide Prepared by Solution Combustion Method

Cited by 21 publications

References 55 publications

Improved Lithium-Ion Transport Within the LiNi0.8Co0.15Al0.05O2 Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Improved Lithium-Ion Transport Within the LiNi0.8Co0.15Al0.05O2 Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Facile synthesis of Samarium (Sm 3+ ) doped Cobalt-iron oxide nano ferrite as an advanced electrode material for supercapacitor applications

Highly Efficient and Selective Visible‐Light Driven Photoreduction of CO2 to CO by Metal–Organic Frameworks‐Derived NiCoO Porous Microrods

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Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Highly Efficient and Selective Visible‐Light Driven Photoreduction of CO₂ to CO by Metal–Organic Frameworks‐Derived NiCoO Porous Microrods