Electrochemical determination of activity of Na2O in Na2Ti6O13-TiO2 two phase system between 803–1000 K

Mudenda, Steven; Kale, Girish M.

doi:10.1016/j.electacta.2017.11.158

“…Some very impressive data have been published on the sol-gel synthesis technique and how it influences the electrical behaviour of MgZr4P6O24 solid-state electrolyte (1)(2)(3)(4)(5)(6)(7)(8). However, data on sol-gel chemical synthesis of novel MgHf4P6O24 solid-state electrolyte and other phosphate ceramic electrolytes are scarcely reported.…”

Section: Introductionmentioning

confidence: 99%

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Adamu

¹

,

Kale

²

2021

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Data from electrochemical impedance measurement of MgHf4P6O24 and MgZr4P6O24 solid-state electrolytes show significant improvement in the ionic conductivity of the ceramic electrolytes. The electrical behaviour of MgHf4P6O24 and MgZr4P6O24 solidstate electrolytes were measured using two-probe analysis at a temperature range of 182 -764 o C, and at a frequency within 100 mHz to 32 MHz range. In this analysis, promising bulk ionic conductivity of 4.52 x 10 -4 Scm -1 and 7.23 x 10 -3 Scm -1 were achieved for MgHf4P6O24 and MgZr4P6O24 electrolytes, respectively, at impedance maximum temperatures of 747 o C and 725 o C, respectively. The sol-gel method was deployed in the synthesis of MgHf4P6O24 and MgZr4P6O24 nanoparticles electrolytes. The thermogravimetric analysis -differential scanning calorimetry (TGA-DSC), and X-ray diffraction (XRD) were characterisation techniques deployed in this study to determine and evaluate the phase composition structure of the nanoparticles calcined at 900 o C and the sample pellets sintered at 1300 o C.

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“…Some very impressive data have been published on the sol-gel synthesis technique and how it influences the electrical behaviour of MgZr4P6O24 solid-state electrolyte (1)(2)(3)(4)(5)(6)(7)(8). However, data on sol-gel chemical synthesis of novel MgHf4P6O24 solid-state electrolyte and other phosphate ceramic electrolytes are scarcely reported.…”

Section: Introductionmentioning

confidence: 99%

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Adamu¹,

Kale²

2021

Meet. Abstr.

0

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Data from electrochemical impedance measurement of MgHf4P6O24 and MgZr4P6O24 solid-state electrolytes show significant improvement in the ionic conductivity of the ceramic electrolytes. The electrical behaviour of MgHf4P6O24 and MgZr4P6O24 solidstate electrolytes were measured using two-probe analysis at a temperature range of 182 -764 o C, and at a frequency within 100 mHz to 32 MHz range. In this analysis, promising bulk ionic conductivity of 4.52 x 10 -4 Scm -1 and 7.23 x 10 -3 Scm -1 were achieved for MgHf4P6O24 and MgZr4P6O24 electrolytes, respectively, at impedance maximum temperatures of 747 o C and 725 o C, respectively. The sol-gel method was deployed in the synthesis of MgHf4P6O24 and MgZr4P6O24 nanoparticles electrolytes. The thermogravimetric analysis -differential scanning calorimetry (TGA-DSC), and X-ray diffraction (XRD) were characterisation techniques deployed in this study to determine and evaluate the phase composition structure of the nanoparticles calcined at 900 o C and the sample pellets sintered at 1300 o C.

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“…Electroceramics such as magnesium zirconium phosphate, MgZr4P6O24, and other phosphate solid electrolytes have been widely studied owing to their potential as solid electrolyte in electrochemical devices and thermodynamic measurements (1)(2)(3)(4)(5)(6)(7)(8).…”

Section: Introductionmentioning

confidence: 99%

Novel MgHf₄P₆O₂₄ as a Solid Electrolyte in Mg-Sensors

Adamu

¹

,

Kale

²

2020

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In this paper, the electrochemical impedance analysis of MgHf4P6O24 electroceramic oxide electrolyte on platinised pellets of 13mm diameter (Ø) and 3.8mm thickness depicts the electrical properties of Mg 2+ -cation conducting species in the characterised solid-state electrolytes measured using the two-probe analysis at 182-764 o C, and from 100mHz to 32MHz, were evaluated. In this analysis, promising ionic conductivity of 4.52 x 10 -4 Scm -1 for MgHf4P6O24 electroceramic electrolyte was exhibited at 747 o C, thereby maintaining both materials and operational stability at 1000 o C ≤ T/ o C≤1300.In addition to this, the design, fabrication and testing of solid-state Mg-sensors using the electrochemical method have been achieved. The novel high-temperature Mg-sensors were designed using the highly conducting Mg 2+ -cation solid-state electrolyte by incorporating a biphasic powder mixture of MgCr2O4 + Cr2O3 solid-state reference electrode, which has shown promising trend after successfully sensing Mg dissolved in molten Al at 700±5 o C.

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Electrochemical determination of activity of Na2O in Na2Ti6O13-TiO2 two phase system between 803–1000 K

Abstract: This is a repository copy of Electrochemical determination of activity of Na2O in Na2Ti6O13-TiO2 two phase system between 803-1000 K.

Cited by 6 publications

References 22 publications

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Novel MgHf₄P₆O₂₄ as a Solid Electrolyte in Mg-Sensors

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Electrochemical determination of activity of Na2O in Na2Ti6O13-TiO2 two phase system between 803–1000 K

Abstract: This is a repository copy of Electrochemical determination of activity of Na2O in Na2Ti6O13-TiO2 two phase system between 803-1000 K.

Cited by 6 publications

References 22 publications

Improved Ionic Conductivity of MgM4P6O24 (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Improved Ionic Conductivity of MgM4P6O24 (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Improved Ionic Conductivity of MgM4P6O24 (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Novel MgHf4P6O24 as a Solid Electrolyte in Mg-Sensors

Contact Info

Product

Resources

About

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Improved Ionic Conductivity of MgM₄P₆O₂₄ (M = Hf, Zr) Ceramic Solid-State Electrolytes by Sol-Gel Synthesis

Novel MgHf₄P₆O₂₄ as a Solid Electrolyte in Mg-Sensors