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| Measurement of Formation Free Energy for NaSbO3 and Na2TeO3 by Electromotive Force Method |
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Received:January 15, 2015
Revised:January 19, 2015
Accepted:January 20, 2015
Published Online:August 10, 2015
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| DOI： |
| KeyWord:formation;free energy;of NaSbO3, formation;free energy;of Na2TeO3, β-β″-Al2O3 Electrolyte, Electrochemistry |
| Author | Institution |
| WANG Zhimeng |
School of Materials and Metallurgy,Northeastern University |
| XIE Hongwei |
School of Materials and Metallurgy,Northeastern University |
| ZHANG Yi |
National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sciences |
| ZHAI Yuchun |
School of Materials and Metallurgy,Northeastern University |
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| Abstract: |
| The solid electrolyte cells Pt∣Sb2O5, NaSbO3‖β(β″)-Al2O3‖NaCrO2, Cr2O3∣Pt and Pt∣TeO2, Na2TeO3‖β(β″)-Al2O3‖NaCrO2, Cr2O3∣Pt were assembled using β(β″)-Al2O3 as solid electrolyte, and then formation free energies of NaSbO3 and Na2TeO3 were calculated by measuring the electromotive force (EMF) of cells. The relationship between formation free energy and temperature (700～1300K) for NaSbO3 can be described as ==-655.88 0.2039T±4.10 (kJ/mol) and that for Na2TeO3 in the temperature range of 700～1100K can be described as =-700.35 0.0519T±9.29 (kJ/mol). |
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