Mo-doped Li2MnSiO4/C nanocomposite synthesized by citric acid-assisted sol-gel method with enhanced electrochemical properties

被引：14

作者：

Lai, Chunyan ^{[1
]}

Wang, Zhen ^{[1
]}

Xu, Qunjie ^{[1
]}

Li, Hexing ^{[1
]}

机构：

[1] Shanghai Univ Electr Power, Coll Environm & Chem Engn, Shanghai, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 139卷

关键词：

Energy storage and conversion; Lithium orthosilicate; Nanocomposites; Electrical properties; CATHODE MATERIALS; NANOSTRUCTURED LI2MNSIO4/C; STATE SYNTHESIS; PERFORMANCE; CR; FE;

D O I：

10.1016/j.matlet.2014.10.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Li2MnSiO4/C nanocomposite doped with Mo6+ ion was successfully synthesized by a citric acid-assisted sol-gel method. (NH4)(6)Mo7O24 . 4H(2)O was selected to act as the source of Mo6+ . The Li2MnSiO4/C nanocomposite samples doped with Mo ion have less MnO impurity in the results of XRD patterns, showing lower electronic transfer resistance and higher specific capacity than undoped Li2MnSiO4/C material. Especially, the Li(2)MnSia(4)/C nanocomposite doped with 6 wt% Mo6+ shows a discharge capacity of 207.3 mAh/g at 0.05 C and 199.7 mAh/g at 0.1 C. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：134 / 137

页数：4

共 27 条

[1] First-principles investigation of Li ion diffusion in Li2FeSiO4 [J].

Araujo, Rafael B. ;

Scheicher, Ralph H. ;

de Almeida, J. S. ;

Ferreira da Silva, A. ;

Ahuja, Rajeev .

SOLID STATE IONICS, 2013, 247 :8-14

[2] Structure and Lithium Transport Pathways in Li2FeSiO4 Cathodes for Lithium Batteries [J].

Armstrong, A. Robert ;

Kuganathan, Navaratnarajah ;

Islam, M. Saiful ;

Bruce, Peter G. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (33) :13031-13035

[3] Structural Evolution of Li2Fe1-yMnySiO4 (y=0, 0.2, 0.5, 1) Cathode Materials for Li-Ion Batteries upon Electrochemical Cycling [J].

Chen, Ruiyong ;

Heinzmann, Ralf ;

Mangold, Stefan ;

Chakravadhanula, V. S. Kiran ;

Hahn, Horst ;

Indris, Sylvio .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (02) :884-893

[4] Synthesis of nanostructured Li2MnSiO4/C using a microwave assisted sol-gel process with water as a base solvent [J].

Choi, Jeon-Jin ;

Kim, Soo ;

Im, Won-Bin ;

Chang, Wonyoung ;

Cho, Byung-Won ;

Kim, Jong Hak ;

Choi, Hee-Lack ;

Chung, Kyung Yoon .

JOURNAL OF ELECTROCERAMICS, 2013, 31 (1-2) :176-180

[5] Controlled shape with enhanced electrochemical performance of various ions doped Li2MnSiO4 cathode nanoparticles [J].

Choi, Sungho ;

Kim, Sue Jin ;

Yun, Young Jun ;

Lee, Sun Sook ;

Choi, Si-Young ;

Jung, Ha-Kyun .

MATERIALS LETTERS, 2013, 105 :113-116

[6] Partial substitution of Mn/Si with V, Cr or Al in Li2MnSiO4 nanoparticle: Dependence of the physical and electrochemical properties on the substitution strategy [J].

Deng, C. ;

Zhang, S. ;

Wu, Y. X. ;

Zhao, B. D. .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2014, 719 :150-157

[7]

Deng C, 2012, INT J ELECTROCHEM SC, V7, P4559

[8] Characterization of Li2MnSiO4 and Li2eSiO4 cathode materials synthesized via a citric acid assisted sol-gel method [J].

Deng, C. ;

Zhang, S. ;

Fu, B. L. ;

Yang, S. Y. ;

Ma, L. .

MATERIALS CHEMISTRY AND PHYSICS, 2010, 120 (01) :14-17

[9] Sol-gel derived nanostructured Li2MnSiO4/C cathode with high storage capacity [J].

Devaraj, S. ;

Kuezma, M. ;

Ng, C. T. ;

Balaya, P. .

ELECTROCHIMICA ACTA, 2013, 102 :290-298

[10] Enhanced electrochemical performance of LiFePO4/C via Mo-doping at Fe site [J].

Gao, Haiyan ;

Jiao, Lifang ;

Peng, Wenxiu ;

Liu, Guang ;

Yang, Jiaqin ;

Zhao, Qianqian ;

Qi, Zhan ;

Si, Yuchang ;

Wang, Yijing ;

Yuan, Huatang .

ELECTROCHIMICA ACTA, 2011, 56 (27) :9961-9967

← 1 2 3 →