Synthesis of Apatite-Type LSO Electrolyte Doped Alkali Earth by Urea-Nitrate Combustion

doi:DOI:10.3969/j.cnki.jdxb.2017.01.014

Journal of Jishou University（Natural Sciences Edition)

• Chemistry and chemical engineering • Previous Articles Next Articles

Synthesis of Apatite-Type LSO Electrolyte Doped Alkali Earth by Urea-Nitrate Combustion

LI Wenzhao，HUANG Zhiliang，LU Mian，CHEN Changlian，ZHANG Zhanhui

(College of Material Science and Engineering，Wuhan Institute of Technology，Wuhan 430074，China)

Online:2017-01-25 Published:2017-01-17
About author:LI Wenzhao (1995—),female，was born in Ezhou City,Hubei Province，graduate student for master degree;research area is function materials
Supported by:
National Natural Science Foundation of China (51242010)；National Key Technology R&D Program (2013BAB07B01);Hubei Province Key Technology R&D Program (2014BCB034)；National Natural Science Foundation of Hubei Province of China (2014CFB796)

Abstract

Abstract:

The urea-nitrate combustion method was introduced to prepare high purity La9.33M_x(SiO₄)₆O₂+δ (M are Sr，Ca and Mg) conductor at low-temperature.The as-prepared samples were investigated by XRD，FT-IR，SEM and EIS.The results showed that the powders transformed into P63/m apatite-type after burning at 800 ℃ for 12 h.Obvious effects of alkali earth doping amount on the microcosmic appearance of sintered La9.33Mx(SiO4)6O2+δwas observed，and the crystal structures altered with the different doping content.In addition，La9.33Mx(SiO4)6O2+δ sintered body possessed good resistance reversibility and stability.The conductivity was improved efficiently with the proper amount of alkali earth oxide，and the optimal doping content was 0.2.Under the same doping content，the ionic conductivity was enhanced as the radius of alkali earth cationic increased (Sr⁺＞Ca⁺＞Mg⁺).

Key words: apatite type solid electrolyte, lanthanum silicate, alkali earth doping, combustion, ionic conductivity

LI Wenzhao，HUANG Zhiliang，LU Mian，CHEN Changlian，ZHANG Zhanhui. Synthesis of Apatite-Type LSO Electrolyte Doped Alkali Earth by Urea-Nitrate Combustion[J]. Journal of Jishou University（Natural Sciences Edition), DOI: DOI:10.3969/j.cnki.jdxb.2017.01.014.

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Synthesis of Apatite-Type LSO Electrolyte Doped Alkali Earth by Urea-Nitrate Combustion

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