Abstract
Composite electrolytes are well-known multiphase systems and exhibit maxima in the conductivity at certain second-phase concentration. An attempt has been made to investigate a number of sodium sulfate (Na2SO4)-based composite systems. The dispersoids that have been used are MgO, Al2O3, and SiO2. The samples have been characterized using impedance spectroscopy, X-ray diffraction, and differential scanning calorimetry. The maximum conductivity has been observed for MgO dispersed system, and the percolation threshold has been observed at 30-mol% dispersoid, MgO concentration. Interestingly, two maxima have been observed in case of the Na2SO4–SiO2 and Na2SO4–Al2O3 composite systems. In the Na2SO4–SiO2 system, the first maximum occurs at lower concentration, i.e., in the range between 10 and 20 mol%, whereas the second occurs at the 40-mol% dispersoid concentration. For the Na2SO4–Al2O3 system, although slightly indistinguishable, two peaks in the conductivity vs composition plot have been observed around 12- and 30-mol% Al2O3 concentrations.
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References
Liang CC (1973) J Electrochem Soc 128:1289
Jain A, Saha S, Gopalan P, Kulkarni AR (2000) Mater Res Bull 35:2337
Jain A, Saha S, Gopalan P, Kulkarni AR (2000) J Solid State Chem 153:287
Dudney NJ (1985) Amer Ceram Soc 68:538
Dudney NJ (1989) Ann Rev Mater Sci 19:103
Gopalan P, Saha S, Bobade S, Kulkarni AR (2000) J Solid State Chem 155:154
Maier J (1995) Prog Solid State Chem 23:171
Shahi K, Wagner JB Jr (1981) Solid State Ionics 3/4:295
Uvarov NF, Isupov VP, Sharma V, Shukla AK (1992) Solid State Ionics 51:41
Uvarov NF, Bokhonov BB, Isupov VP, Hairetdinov EF (1994) Solid State Ionics 74:15
Uvarov NF, Shrivastava OP, Hairetdinov EF (1989) Solid State Ionics 36:39
Imanaka N, Kuwabara S, Adachi G-Y, Shiokawa J (1987) Solid State Ionics 23:15
Imanaka N, Yamaguchi Y, Adachi G-Y, Shiokawa J, Yoshioka H (1986) Solid State Ionics 20:153
Nakamura O, Goodenough JB (1982) Solid State Ionics 7:119
Nakamura O, Goodenough JB (1982) Solid State Ionics 7:125
Hartwing P, Rudo K, Weppner W (1981) Solid State Ionics 5:403
Hartwing P, Weppner W (1981) Solid State Ionics 3/4:249
Skarstad PM, Merritt DR, Owens BB (1981) Solid State Ionics 3/4:277
Akila R, Jacob KT (1987) Solid State Ionics 25:217
Zhao Z-Y, Wang C-Y, Dai S-Y, Chen L-Q (1983) Solid State Ionics 9/10:1174
Maier J (1985) J Phys Chem Solids 46:309
Maier J (1984) Phys Status Solidi B 123:K89
Maier J (1984) Phys Status Solidi 124:K187
Kracek FC, Gibson RE (1930) J Phys Chem 34:188
Nord AG (1973) Acta Chem Scand 27:814
Naruse H, Tanaka K, Morikawa H, Maurumo F, Mehrotra BN (1987) Acta Crystallogr B 43:143
Eysel W, Hofer HH, Keester KL, Hahn T (1985) Acta Crystallogr B 41:5
Choi BK, Lockwood DJ (1989) Phys Rev B 40:4863
Choi BK (1992) Solid State Ionics 58:133
Choi BK, Lee HK, Kim YW (2000) Solid State Ionics 155:154
Lunden A (1995) Solid State Ionics 76:249
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Bobade, S.M., Kulkarni, A.R. & Gopalan, P. Electrical properties of Na2SO4-based composite systems. Ionics 13, 257–262 (2007). https://doi.org/10.1007/s11581-007-0081-3
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DOI: https://doi.org/10.1007/s11581-007-0081-3