| 氧基电解质La_(10-x)V_x(SiO_4)_6O_(3+x)的制备及性能测试(英文) |
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| 引用本文： | 袁文辉,申荣平,李莉.氧基电解质La_(10-x)V_x(SiO_4)_6O_(3+x)的制备及性能测试(英文)[J].中国化学工程学报,2010,18(2):328-332. |
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| 作者姓名： | 袁文辉 申荣平 李莉 |
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| 作者单位： | 1. School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, China;2. College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China |
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| 基金项目： | Supported by the Joint Funds of NSFC-Guangdong of China(U0834004);the Natural Science Foundation of Guangdong Province(06025657) |
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| 摘 要： | Apatite-lanthanum silicate has attracted considerable interest in recent years due to its high oxide ion conductivity.In this paper,V-doped samples La10-xVx(SiO4) 6O3+x(0≤x≤1.5) were prepared by sol-gel method and the influences of V-dopant content on calcining temperature and conductivity were reported.The samples were characterized by thermal analysis(TG-DSC) ,X-ray diffraction(XRD) and scanning electron micrograph(SEM) . The apatite was obtained at 800°C,a relatively low temperature in comparison to 1500°C with the conventional solid-state method.The ceramic pellets sintered at 1200°C for 5 h showed a higher relative density than La9.33Si6O26 pellets sintered at 1400°C for 20 h.The conductivities of samples were measured by electrochemical impedance spectroscopy.The conductivity was improved with the increase of V-dopant content on La site.
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| 关 键 词： | oxide ionic conductor sol-gel method interstitial oxygen ion conduction oxyapatite |
| 收稿时间： | 2009-8-7 |
| 修稿时间： | 2009-8-7
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Synthesis and conductivity of oxyapatite ionic conductor La10-xVx(SiO4)6O3+x |
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| YUAN Wenhui,SHEN Rongping,LI Li.Synthesis and conductivity of oxyapatite ionic conductor La10-xVx(SiO4)6O3+x[J].Chinese Journal of Chemical Engineering,2010,18(2):328-332. |
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| Authors: | YUAN Wenhui SHEN Rongping LI Li |
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| Affiliation: | 1. School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, China;2. College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Apatite-lanthanum silicate has attracted considerable interest in recent years due to its high oxide ion conductivity.In this paper,V-doped samples La10-xVx(SiO4)6O3+x(0≤x≤1.5) were prepared by sol-gel method and the influences of V-dopant content on calcining temperature and conductivity were reported.The samples were characterized by thermal analysis(TG-DSC), X-ray diffraction(XRD) and scanning electron micrograph(SEM) . The apatite was obtained at 800℃,a relatively low temperature in comparison to 1500℃ with the conventional solid-state method.The ceramic pellets sintered at 1200℃ for 5 h showed a higher relative density than La9.33Si6O26 pellets sintered at 1400℃ for 20 h.The conductivities of samples were measured by electrochemical impedance spectroscopy.The conductivity was improved with the increase of V-dopant content on La site. |
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| Keywords: | oxide ionic conductor sol-gel method interstitial oxygen ion conduction oxyapatite |
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