Effects of TiO2 doping on Li+-stabilized Na-β"-alumina for energy storage applications

被引：16

作者：

Dirksen, C. L. ^{[1
]}

Skadell, K. ^{[1
]}

Schulz, M. ^{[1
]}

Stelter, M. ^{[1
]}

机构：

[1] Fraunhofer Inst Ceram Technol & Syst IKTS, Michael Faraday Str 1, D-07629 Hermsdorf, Germany

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2019年 / 213卷

关键词：

Na-beta ''-alumina; TiO2; doping; Solid electrolyte; Sintering aid; Ceramics; RELATIVE STABILITY; ELECTROLYTE; CONDUCTIVITY;

D O I：

10.1016/j.seppur.2018.12.028

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Sodium-ion conductive Li+-stabilized Na-beta ''-alumina was synthesized by calcinating a mixture of AlO(OH), Na2CO3 and Li2CO3. For additional improvement of the characteristics the ceramic powder was doped with various amounts of TiO2 and sintered at 1400, 1500 and 1600 degrees C. The effects of doping and sintering temperature were evaluated by measuring fracture strength, ionic conductivity, density, morphology and phase composition. The conductivity was raised from 0.2 to 0.3 S cm(-1) at 300 degrees C by adding 1.5 wt.-% TiO2 to the Na-beta ''-alumina. By adding 1 wt.-% of TiO2 to the electrolyte material, the characteristic fracture strength sigma(0) was increased from 188 to 277 MPa. Aside from that, changes in the microstructure, due to doping were observed. The altered properties of the ceramic were mainly assigned to changes in the microstructure.

引用

页码：88 / 92

页数：5

共 23 条

[1] EFFECT OF TIO2 ON INITIAL SINTERING OF AL2O3 [J].

BAGLEY, RD ;

CUTLER, IB ;

JOHNSON, DL .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1970, 53 (03) :136-&

[2] EFFECT OF FOREIGN ION ADDITION ON RELATIVE STABILITY AND ELECTRIC-CONDUCTIVITY OF BETA ALUMINUM AND BETA ALUMINUM TYPE PHASES [J].

BOILOT, JP ;

THERY, J .

MATERIALS RESEARCH BULLETIN, 1976, 11 (04) :407-414

[3] INFLUENCE OF FOREIGN IONS ADDITION ON RELATIVE STABILITY AND ELECTRICAL-CONDUCTIVITY OF BETA- AND BETA''- ALUMINA TYPE PHASES LOCALIZATION OF IMPURITIES [J].

BOILOT, JP ;

KAHN, A ;

THERY, J ;

COLLONGUES, R ;

ANTOINE, J ;

VIVIEN, D ;

CHEVRETTE, C ;

GOURIER, D .

ELECTROCHIMICA ACTA, 1977, 22 (07) :741-745

[4] Microstructure control and properties of β"-Al2O3 solid electrolyte [J].

Chen, Guangyu ;

Lu, Jiachun ;

Li, Lin ;

Chen, Lixin ;

Jiang, Xinbiao .

JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 673 :295-301

[5] Advances in ZEBRA batteries [J].

Dustmann, CH .

JOURNAL OF POWER SOURCES, 2004, 127 (1-2) :85-92

[6] The effect of TiO2 and MnO2 on densification and microstructural development of alumina [J].

Erkalfa, H ;

Misirli, Z ;

Baykara, T .

CERAMICS INTERNATIONAL, 1998, 24 (02) :81-90

[7] Ionic transport and localized ionic motion in Na-β"-alumina, Na1.70Li0.32Al10.66O17 [J].

Funke, Klaus ;

Banhatti, Radha Dilip .

JOURNAL OF MATERIALS SCIENCE, 2007, 42 (06) :1942-1947

[8]

HODGE JD, 1984, J AM CERAM SOC, V67, P183, DOI 10.1111/j.1151-2916.1984.tb19738.x

[9] High temperature sodium batteries: status, challenges and future trends [J].

Hueso, Karina B. ;

Armand, Michel ;

Rojo, Teofilo .

ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (03) :734-749

[10] COMPLEX PLANE ANALYSIS OF THE IMPEDANCE AND ADMITTANCE OF POLYCRYSTALLINE SODIUM-BETA-ALUMINA DOPED WITH TRANSITION-METAL IONS [J].

KENNEDY, JH ;

AKRIDGE, JR ;

KLEITZ, M .

ELECTROCHIMICA ACTA, 1979, 24 (07) :781-787

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