Please wait a minute...
J4  2012, Vol. 46 Issue (2): 237-242    DOI: 10.3785/j.issn.1008-973X.2012.02.009
    
Performances of the NASICON type solid-state electrolyte prepared
by Kaolin doping and all solid-state lithium ion battery
ZHENG Wei-dong, SHUI Miao, RENG Zheng-juan, SHU Jie, XU Dan, ZHANG Rui-feng
Faculty of Materials Science and Chemical Engineering,Ningbo University, g Ningbo 315211, China
Download:   PDF(0KB) HTML
Export: BibTeX | EndNote (RIS)      

Abstract  

To improve the low ionic conductivity of LiTi2(PO4)3 based solid state electrolyte,NASICON type fast ion conductors Li1+2x+2yAlxMgyTi2-x-ySixP3-xO12were prepared by Mg2+, Al3+ and Si4+ co-doping which originated from Kaolin of Zhejiang Sanmen district. The influences of the content of the doping elements and testing temperature on ionic conductivity were studied. The results show that ionic conductivity reaches maximum 7.86×10-4 S·cm-1 tested at T=423 K for the composite Li1.8Al0.1Mg0.3Ti1.6Si0.1P2.9O12. Spray Pyrolysis was applied to fabricate the in situ all solid-state lithium ion battery Al/ Li1+xV3O8/ Li1.8Al0.1Mg0.3Ti1.6Si0.1P2.9O12 /C system and 50 charge-discharge cycles were tested between 1.8 ~3.9 V. The battery shows rather good stability and capacity retention capability. After 30 cycles, the discharge capacities are stabilized between 190 and 205 mAh·g-1 with more than 90% discharge efficiency.



Published: 20 March 2012
CLC:  TQ 152  
Cite this article:

ZHENG Wei-dong, SHUI Miao, RENG Zheng-juan, SHU Jie, XU Dan, ZHANG Rui-feng. Performances of the NASICON type solid-state electrolyte prepared
by Kaolin doping and all solid-state lithium ion battery. J4, 2012, 46(2): 237-242.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2012.02.009     OR     http://www.zjujournals.com/eng/Y2012/V46/I2/237


高岭土掺杂NASICON固体电解质及全固态电池性能

针对LiTi2(PO4)3基固态电解质电导率低的问题,采用浙江三门高岭土矿作为主要原料,以高温固相法制备铝、镁、硅共掺杂钠超离子导体(NASICON)型快离子导体Li1+2x+2yAlxMgyTi2-x-ySixP3-xO12.研究掺杂比例、温度对固态电解质离子电导率的影响.结果表明,组成为Li1.8Al0.1Mg0.3Ti1.6Si0.1P2.9O12固体电解质在423 K时有最高离子电导率7.86×10-4 S·cm-1.以该组成固态电解质为基片,喷雾热解原位制备Al/ Li1+xV3O8/ Li1.8Al0.1Mg0.3Ti1.6Si0.1 P2.9O12 /C全固态电池并在1.8~3.9 V电压区间进行50次充放电测试.该电池具有较好的稳定性及循环容量保持能力.30次循环以后放电容量基本稳定在190~205 mAh·g-1之间,充放电效率大于90%.

[1] 吴宇平,万春荣,姜长印.锂离子二次电池[M].北京:化学工业出版社,2002: 210-218.
[2] 温兆银,朱修剑,许晓雄,等.全固态锂二次电池的研究[C]∥第十二届中国固态离子学学术会议论文集.苏州:中国硅酸盐学会,2004: 24-28.
WEN zhaoyin, ZHU xiujian, XU xiaoxiong, et al. Research on AllSolidState lithium secondary batteries [C]∥ the twelfth China SolidState Ionics Conference Proceedings. Suzhou: Chinese Ceramic Society, 2004: 24-28.
[3] SUZUKI T, YOSHIDA K, UEMATSU K, et al. Structure refinement of lithium ion conductors Li3Sc2(PO4)3 and Li3-2x(Sc1-xMx)2(PO4)3 (M=Ti, Zr) with x=0.10 by neutron diffraction [J]. Solid State Ionics, 1998, 113: 89-96.
[4] 张保柱.锂快离子导体Li8Al1-xSi2xP1-xO8系统研究[J].山西大学学报:自然科学版, 2006, 29(1): 65-68.
ZHANG Baozhu. Studies on fast ion system Li8Al1-xSi2xP1-xO8 [J]. Shanxi Daxue Xuebao: Science, 2006, 29(1): 65-68.
[5] ARBI K, MANDAL S, ROJO J M. Dependence of ionic conductivity on composition of fast ionic conductors Li1+xTi2-xAlx(PO4)3, 0 ≤ x ≤ 0.7. A parallel NMR and electricimpedance study[J]. Chem. Mater, 2002, 14(3): 1091-1097.
[6] ZHANG Y R, WANG W J. The study of new lithium fast ion conductor Li1+2x+yAlxYyTi2-x-ySixP3-xO12 based on kaolinite [J]. Solid State Ionics, Materials and Devices, 2000: 63-67.
[7] ZHANG Y R, CHEN W Q, WANG W J. The synthesis and characterization of new lithium fast ion conductor Li1+2x+yAlxZnyTi2-x-ySixP3-xO12 based on kaolinite [J]. Solid State Ionics, Materials and Devices, 2000: 69-73.
[8] MEI A, JIANG Q H, LIN Y H, et al. Lithium lanthanum titanium oxide solidstate electrolyte by spark plasma sintering [J]. Journal of Alloys and Compounds, 2009, 486 (1/2): 871-875.
[9] 李枝贤,韩坤明,鲁道荣,等. 高容量锂离子电池正极材料Li1+xV3O8的制备及改性研究[J].金属功能材料,2007, 14(4): 15-18.
LI Zhixian, HAN Kunming, LU Daorong, et al. Synthesis of Li1+xV3O8 as Cathode materials with a high capacity and improvement of discharge [J]. Metallic Functional Materials, 2007, 14(4):15-18.

No related articles found!