Thermal and humidity sensing behaviors of Mn1.85Co0.3Ni0.85O4 thin films: Effects of adjusting the surface morphology

He, Lin; Ling, Zhiyuan; Wu, Muying; Zhang, G.; Liu, S.Z.; Zhang, S.Q.; Ling, Dongxiong

doi:10.1016/j.apsusc.2017.03.101

Cited by 8 publications

(2 citation statements)

References 30 publications

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“…Ternary spinel oxides, specifically the Mn-Ni-Co systems, possess good physicochemical characteristics, modified by intrinsic morphological nano-structural control. The properties of ternary systems are determined by the different synthetic methods that have been adopted, such as the hydrothermal method [13,27], wet methods [28], and combustion [29]. The availability of a range of methods gives room for tailored stoichiometric metallic compositions of the spinel lattice [29,30].…”

Section: Introductionmentioning

confidence: 99%

Mn-Ni-Co-O Spinel Oxides towards Oxygen Reduction Reaction in Alkaline Medium: Mn0.5Ni0.5Co2O4/C Synergism and Cooperation

et al. 2021

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Mn-doped spinel oxides MnxNi1−xCo2O4 (x = 0, 0.3, 0.5, 0.7, and 1) were synthesized using the citric acid-assisted sol–gel method. The Mn0.5Ni0.5Co2O4 (x = 0.5) supported on carbon nanosheets, Mn0.5Ni0.5Co2O4/C, was also prepared using the same method employing NaCl and glucose as a template and carbon source, respectively, followed by pyrolysis under an inert atmosphere. The electrocatalytic oxygen reduction reaction (ORR) activity was performed in alkaline media. Cyclic voltammetry (CV) was used to investigate the oxygen reduction performance of MnxNi1−xCo2O4 (x = 0, 0.3, 0.5, 0.7, and 1), and Mn0.5Ni0.5Co2O4 was found to be the best-performing electrocatalyst. Upon supporting the Mn0.5Ni0.5Co2O4 on a carbon sheet, the electrocatalytic activity was significantly enhanced owing to its large surface area and the improved charge transfer brought about by the carbon support. Rotating disk electrode studies show that the ORR electrocatalytic activity of Mn0.5Ni0.5Co2O4/C proceeds via a four-electron pathway. Mn0.5Ni0.5Co2O4/C was found to possess E1/2(V) = 0.856, a current density of 5.54 mA cm−2, and a current loss of approximately 0.11% after 405 voltammetric scan cycles. This study suggests that the interesting electrocatalytic performance of multimetallic transition metal oxides can be further enhanced by supporting them on conductive carbon materials, which improve charge transfer and provide a more active surface area.

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Section: Introductionmentioning

confidence: 99%

Mn-Ni-Co-O Spinel Oxides towards Oxygen Reduction Reaction in Alkaline Medium: Mn0.5Ni0.5Co2O4/C Synergism and Cooperation

et al. 2021

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“…At present, the main preparation methods of NTC thin films are radio frequency magnetron sputtering, evaporation coating, metal organic thermal decomposition, pulsed laser deposition, and so on [7][8][9][10][11]. The metal organic thermal decomposition method is characterized by good controllability and simple operation, but the composition and thickness of the thin film may be uneven.…”

Section: Introductionmentioning

confidence: 99%

Mn-Co-Ni-O thin films prepared by sputtering with alloy target

Zou

et al. 2020

J Adv Ceram

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The thin film of heat-sensitive materials has been widely concerned with the current trend of miniaturization and integration of sensors. In this work, Mn 1.56 Co 0.96 Ni 0.48 O 4 (MCNO) thin films were prepared on SiO 2 /Si substrates by sputtering with Mn-Co-Ni alloy target and then annealing in air at different temperatures (650-900 ℃). The X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) analysis indicated that the main crystalline phase of MCNO thin films was spinel crystal structure; the surface of the thin films was very dense and uniform. The electrical properties of the thin films were studied in the temperature range of-5-50 ℃. The MCNO thin film with a low room temperature resistance R 25 of 71.1 kΩ and a high thermosensitive constant B value of 3305 K was obtained at 750 ℃. X-ray photoelectron spectroscopy (XPS) analysis showed that the concentration of Mn 3+ and Mn 4+ cations in MCNO thin films is the highest when annealing temperature is 750 ℃. The complex impedance analysis revealed internal conduction mechanism of the MCNO thin film and the resistance of the thin film was dominated by grain boundary resistance.

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Structural and optical properties of Mn–Co–Ni–O and Mn–Zn–Ni–O medium-entropy oxide films

Ren

Zhang

Wang

et al. 2023

J Mater Sci: Mater Electron

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Thermal and humidity sensing behaviors of Mn1.85Co0.3Ni0.85O4 thin films: Effects of adjusting the surface morphology

Cited by 8 publications

References 30 publications

Mn-Ni-Co-O Spinel Oxides towards Oxygen Reduction Reaction in Alkaline Medium: Mn0.5Ni0.5Co2O4/C Synergism and Cooperation

Mn-Ni-Co-O Spinel Oxides towards Oxygen Reduction Reaction in Alkaline Medium: Mn0.5Ni0.5Co2O4/C Synergism and Cooperation

Mn-Co-Ni-O thin films prepared by sputtering with alloy target

Structural and optical properties of Mn–Co–Ni–O and Mn–Zn–Ni–O medium-entropy oxide films

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