Thermopower and electrical conductivity of Mn1.68−XCu0.6+X+Y+ZCo0.24−YNi0.48−Z thin film oxides obtained through metal organic decomposition processing

Moyer, Jerome G.; Kukuruznyak, Dmitry A.; Nguyen, Nam; Prowse, Michael S.; Ohuchi, Fumio S.

doi:10.1063/1.2359067

Cited by 17 publications

(5 citation statements)

References 22 publications

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“…The factor denotes the probability that adjacent sites will be occupied by a Mn 3+ and Mn 4+ redox couple. Considering a fixed value, the is maximized when [Mn 3+ ] oct = [Mn 4+ ] oct 23. To verify the optimal oxide states in the MCN films, we have investigated the XPS spectra for Mn 2p 3/2 signals of the MCN films.…”

Section: Resultsmentioning

confidence: 99%

High performance of Mn-Co-Ni-O spinel nanofilms sputtered from acetate precursors

Huang

Zhou

Ouyang

et al. 2015

Sci Rep

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Mn-Co-Ni-O (MCN) spinel oxide material, a very important transition metal oxide (TMO) with the best application prospects in information and energy fields, was discovered over five decades ago, but its applications have been impeded by the quality of its films due to the magnitude of deposition challenge. Here we report that high quality of MCN nanofilms can be achieved by sputtering deposition via acetate precursors whose decomposition temperatures are matched to the initial synthesis temperature of the MCN thin films. Excellent performance of MCN nanofilms is demonstrated, combining for the first time preferred orientation, high temperature coefficient of resistance, and moderate resistivity. The film devices show an intrinsic recombination with a much faster rate of the order of a microsecond for the laser-pumped carriers, which is ~3 orders of magnitude larger compared with that of the ceramic material. The electronic structure of the thin films confirms that it is indeed of n-type nature, exhibiting appropriate electronic states consistent with the levels of metal electrodes and semiconductors. The results offer a vital avenue for depositing high performance TMO thin films for advanced oxide devices, and will have great significance for exploiting new applications in modern oxide electronics and optoelectronics.

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Section: Resultsmentioning

confidence: 99%

High performance of Mn-Co-Ni-O spinel nanofilms sputtered from acetate precursors

Huang

Zhou

Ouyang

et al. 2015

Sci Rep

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“…It was shown previously that the macroscopic impedance of the NTC materials could be fitted with an equivalent circuit containing a series of one R-CPE (constant phase elements) and one R-C element or two parallel R-C elements representing GB and grain contributions. 8,[16][17][18][19][20] The data fitting was performed using commercial software (Z-View 2), where, for each experimental data point, an optimal value was obtained from the model. A temperature testing chamber with programming controller (MPC-2000 A) was used to support ac impedances at various temperatures.…”

Section: Methodsmentioning

confidence: 99%

Electrical conduction of intrinsic grain and grain boundary in Mn-Co-Ni-O thin film thermistors: Grain size influence

Ling

2011

Journal of Applied Physics

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Section: Resultsmentioning

confidence: 96%

“…In the figure, from S1 to S4 electrodes, the gradual increase in specific capacitance has been observed by doping Cu in CoMnS which exhibits high electrical conductivity than Co and Mn. 56 Whereas in S5 electrode an abrupt decay in capacitance has been noticed because of eliminating Co from the electrode which significantly reduces the area for ions intercalation and causes less charge storage capacity. S4 electrode (Cu 0.75 Co 0.25 MnS) showed maximum specific capacitance of 5000 F/g at 3 mV/s with good capacitance retentivity at a high scan rate affirms its excellent electrochemical performance.…”

Section: Materials Characterizationsmentioning

confidence: 99%

Binder‐free ternary transition metal sulfides for energy storage applications

Zakar

Iqbal

Haider

2022

Intl J of Energy Research

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In this study, stimulating approach electrodeposition has been espoused to fabricate binder-free electrodes of transition metal sulfides to achieve high electrochemical performance for energy storage devices. Here, the effect of Co and Cu with MnS has been scrutinized by gradually replacing Co with Cu concentration. The fabricated electrodes have been examined by FESEM to analyze the structural morphology of the material. Furthermore, electrochemical characterizations have been carried out for exploring the electrode performance which reveals that the S4 electrode (Cu 0.75 Co 0.25 MnS) exhibits the best performance as compared to contender electrodes. This electrode exhibits a high specific capacitance of 4800 F/g at 10 A/g current density with a smaller ESR value of 0.48 Ω. Additionally, the S4 electrode has been used as a cathode and activated carbon (AC) as an anode in assembling of supercapacitor device. Device S4//AC portrayed a maximum energy density of 118 Wh/kg with a power density of 960 W/kg at 1.2 A/g. The obtained results

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Thermopower and electrical conductivity of Mn1.68−XCu0.6+X+Y+ZCo0.24−YNi0.48−Z thin film oxides obtained through metal organic decomposition processing

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Cited by 17 publications

References 22 publications

High performance of Mn-Co-Ni-O spinel nanofilms sputtered from acetate precursors

High performance of Mn-Co-Ni-O spinel nanofilms sputtered from acetate precursors

Electrical conduction of intrinsic grain and grain boundary in Mn-Co-Ni-O thin film thermistors: Grain size influence

Binder‐free ternary transition metal sulfides for energy storage applications

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