Influence of excess lithium and sintering on the conductivity of Li1.3Al0.3Ti1.7(PO4)3

被引：23
作者：
Li, Ziying [1 ]
Zhao, Xiujian [1 ]
机构：
[1] Wuhan Univ Technol Univ, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China
来源：
FUNCTIONAL MATERIALS LETTERS | 2019年 / 12卷 / 04期
关键词：
NASICON; excess lithium; sintering; ionic conductivity; IONIC-CONDUCTIVITY; SOLID ELECTROLYTES; CONDUCTORS;
D O I：
10.1142/S1793604719500474
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NASICON-type samples with different amount of excess lithium content in starting materials, Li1.3(1+x)Al0.3Ti1.7(PO4)(3) (0 <= x <= 0.5), were prepared by conventional solid-state reaction. Effect of excess lithium and sintering conditions on composition and electrical properties of LATP were investigated. X-ray diffraction and Scanning electron microscopy were used to characterize the composition, crystal structure and morphology, respectively. The total ionic conductivities of samples were measured by AC-impedance spectra. The optimal addition amount of excess Li was found to be 40 mol.% with the highest conductivity of 3.1 x 10(-4 )S/cm at 25 degrees C. The improvement of the conductivity of LATP can be attributed to the increasing of Li+ carriers and the formation of glassy phase in samples which acted as binders and provided excess Li ion vacancies for lithium transport.
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页数：5
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共 32 条
[1]  
[Anonymous], 2008, NATURE, V451, P652
[2]   IONIC-CONDUCTIVITY OF LITI2(PO4)3 MIXED WITH LITHIUM-SALTS [J].
AONO, H ;
SUGIMOTO, E ;
SADAOKA, Y ;
IMANAKA, N ;
ADACHI, GY .
CHEMISTRY LETTERS, 1990, (03) :331-334
[3]   IONIC-CONDUCTIVITY OF SOLID ELECTROLYTES BASED ON LITHIUM TITANIUM PHOSPHATE [J].
AONO, H ;
SUGIMOTO, E ;
SADAOKA, Y ;
IMANAKA, N ;
ADACHI, G .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1990, 137 (04) :1023-1027
[4]   IONIC-CONDUCTIVITY AND SINTERABILITY OF LITHIUM TITANIUM PHOSPHATE SYSTEM [J].
AONO, H ;
SUGIMOTO, E ;
SADAOKA, Y ;
IMANAKA, N ;
ADACHI, G .
SOLID STATE IONICS, 1990, 40-1 :38-42
[5]   Dependence of ionic conductivity on composition of fast ionic conductors Li1+xTi2-xAlx(PO4)3, 0 ≤ x ≤ 0.7.: A parallel NMR and electric impedance study [J].
Arbi, K ;
Mandal, S ;
Rojo, JM ;
Sanz, J .
CHEMISTRY OF MATERIALS, 2002, 14 (03) :1091-1097
[6]   Influence of LiBO2 addition on the microstructure and lithium -ion conductivity of Li1+xAlxTi2-x(PO4)3(x=0.3) ceramic electrolyte [J].
Bai, Hainan ;
Hu, Jiulin ;
Li, Xiaoguang ;
Duan, Yusen ;
Shao, Feng ;
Kozawa, Takahiro ;
Naito, Makio ;
Zhang, Jingxian .
CERAMICS INTERNATIONAL, 2018, 44 (06) :6558-6563
[7]   Increase in grain boundary ionic conductivity of Li1.5Al0.5Ge1.5(PO4)3 by adding excess lithium [J].
Chung, Habin ;
Kang, Byoungwoo .
SOLID STATE IONICS, 2014, 263 :125-130
[8]   Lithium conducting solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 obtained via solution chemistry [J].
Duluard, Sandrine ;
Paillassa, Aude ;
Puech, Laurent ;
Vinatier, Philippe ;
Turq, Viviane ;
Rozier, Patrick ;
Lenormand, Pascal ;
Taberna, Pierre-Louis ;
Simon, Patrice ;
Ansart, Florence .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2013, 33 (06) :1145-1153
[9]   Ceramic and polymeric solid electrolytes for lithium-ion batteries [J].
Fergus, Jeffrey W. .
JOURNAL OF POWER SOURCES, 2010, 195 (15) :4554-4569
[10]   Electrochemical properties of Li1.4Al0.4Ti1.6(PO4)3 synthesized by a co-precipitation method [J].
Huang, Lezhi ;
Wen, Zhaoyin ;
Wu, Meifen ;
Wu, Xiangwei ;
Liu, Yu ;
Wang, Xiuyan .
JOURNAL OF POWER SOURCES, 2011, 196 (16) :6943-6946
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