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KAg4I5(10%AgI) composite is prepared by the solid-state reaction method in the dark and dry conditions, and its structure, morphology, ion conductivity properties, and phase transition temperature are studied by X-ray diffraction, scanning electron microscope, impedance spectroscopy, differential scanning calorimetry and other analytical tools. The results show that when the two phases (AgI and KAg4I5 phases) in the composite are both fast ionic conductor phases, ionic conductivity of composite is higher than that of the single phase, and the heating and cooling of the conductivity curves form a hysteresis loop.During heating and cooling, AgI phase transition temperature lags 5 and 10 ℃ respectively.We use the interaction interface, the interface stress phase and Gouy-Chapman model to analyze the mechanism for the improved conductivity of this composite and phase transition temperature change when the two phases are both the fast ionic conductive.
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Keywords:
- ionic conductivity /
- electrochemical potential /
- space charge region /
- phase transition temperature
[1] Liu L F, Lee S W, Li J B, Alexe M, Rao G H, Zhou W Y, Lee J J, Lee W, Gsele U 2008 Nanotechnology 19 495706
[2] [3] Lee J S, Adams S, Maier J 2000 Solid State Ion. 136137 1261
[4] [5] Albert S, Frolet N, Yot P, Pradel A, Ribes M 2006 Solid State Ion. 177 3009
[6] Shahi K, Wagner J B 1980 Appl. Phys. Lett. 37 15
[7] [8] Yamada H, Bhattacharyya A J, Maier J 2006 Adv. Funct. Mater. 16 525
[9] [10] Sata N, Eberman K, Eberl K, Maier J 2000 Nature 408 21
[11] [12] Maier J 1995 Prog. Solid State Chem. 23 171
[13] [14] [15] Maier J 2005 Nature Mater. 4 805
[16] Maier J 2004 Solid State Ion. 175 7
[17] [18] Zimmer F, Ballone P, Maier J, Parrinello M 2000 J. Phys. Chem. 112 14
[19] [20] [21] Jamnik J, Maier J, Pejovnik S 1995 Solid State Ion. 75 51
[22] Uvarov N F 2007 Russ. Chem. Rev. 76(5) 415
[23] [24] [25] Maier J 1995 Solid State Ion. 75 139
[26] Guo X X, Matei I, Jamnik J, Lee J S, Maier J 2007 Phys. Rev. B 76 125429
[27] [28] [29] Guo X X, Maier J 2009 Adv. Funct. Mater. 19 96
[30] Saito Y, Maier J 1996 Solid State Ion. 8688 581
[31] [32] [33] Song Q G, Jiang E Y 2007 Acta Phys. Sin. 57 1827(in Chinese)[宋庆功、姜恩永 2007 57 1827]
[34] [35] Uvarov N F, Vaněk P, Savinov M, Petzelt J 2000 Solid State Ion. 127 253
[36] [37] Uvarov N F, Vaněk P, Savinov M, Petzelt J 2000 J. Mater. Synth Proc. 8 5
[38] [39] Maier J 2001 Chem. Eur. J. 7 22
[40] Liang C H, Kazuya T, Hasegawa T, Aono M, Iyi N 2007 J. Appl. Phys. 102 124308
[41] [42] Martinie B, Troccaz M, Claudy P, Letoffe J 1987 J. Phys. Chem. Solids 48 943
[43] [44] Lajzerowicz J 1981 Ferroelectrics 35 219
[45] -
[1] Liu L F, Lee S W, Li J B, Alexe M, Rao G H, Zhou W Y, Lee J J, Lee W, Gsele U 2008 Nanotechnology 19 495706
[2] [3] Lee J S, Adams S, Maier J 2000 Solid State Ion. 136137 1261
[4] [5] Albert S, Frolet N, Yot P, Pradel A, Ribes M 2006 Solid State Ion. 177 3009
[6] Shahi K, Wagner J B 1980 Appl. Phys. Lett. 37 15
[7] [8] Yamada H, Bhattacharyya A J, Maier J 2006 Adv. Funct. Mater. 16 525
[9] [10] Sata N, Eberman K, Eberl K, Maier J 2000 Nature 408 21
[11] [12] Maier J 1995 Prog. Solid State Chem. 23 171
[13] [14] [15] Maier J 2005 Nature Mater. 4 805
[16] Maier J 2004 Solid State Ion. 175 7
[17] [18] Zimmer F, Ballone P, Maier J, Parrinello M 2000 J. Phys. Chem. 112 14
[19] [20] [21] Jamnik J, Maier J, Pejovnik S 1995 Solid State Ion. 75 51
[22] Uvarov N F 2007 Russ. Chem. Rev. 76(5) 415
[23] [24] [25] Maier J 1995 Solid State Ion. 75 139
[26] Guo X X, Matei I, Jamnik J, Lee J S, Maier J 2007 Phys. Rev. B 76 125429
[27] [28] [29] Guo X X, Maier J 2009 Adv. Funct. Mater. 19 96
[30] Saito Y, Maier J 1996 Solid State Ion. 8688 581
[31] [32] [33] Song Q G, Jiang E Y 2007 Acta Phys. Sin. 57 1827(in Chinese)[宋庆功、姜恩永 2007 57 1827]
[34] [35] Uvarov N F, Vaněk P, Savinov M, Petzelt J 2000 Solid State Ion. 127 253
[36] [37] Uvarov N F, Vaněk P, Savinov M, Petzelt J 2000 J. Mater. Synth Proc. 8 5
[38] [39] Maier J 2001 Chem. Eur. J. 7 22
[40] Liang C H, Kazuya T, Hasegawa T, Aono M, Iyi N 2007 J. Appl. Phys. 102 124308
[41] [42] Martinie B, Troccaz M, Claudy P, Letoffe J 1987 J. Phys. Chem. Solids 48 943
[43] [44] Lajzerowicz J 1981 Ferroelectrics 35 219
[45]
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