A direct current pulse technique to enhance conductivity of heterogeneous electrolytes

被引：5

作者：

Gupta, N. ^{[1
]}

Thokchom, J. S. ^{[1
]}

Kumar, B. ^{[1
]}

机构：

[1] Univ Dayton, Res Inst, Electrochem Power Grp, Div Met & Ceram, Dayton, OH 45469 USA

来源：

JOURNAL OF POWER SOURCES | 2008年 / 185卷 / 02期

关键词：

Nanocomposite; Space charge effect; Ionic conductivity; DC potential; Carrier concentration; Mobility;

D O I：

10.1016/j.jpowsour.2008.09.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A heterogeneous electrolyte comprised of PEG(6000):LiClO4 (8:1)-MgO (20 wt.%) was prepared and characterized. The electrolyte was subjected to a DC potential of 10mV and the effect of the potential on conductivity evolution was investigated. The DC potential enhanced the conductivity by a factor of 25. The enhancement in conductivity was due to the formation of space charge around MgO that resulted in the development of an internal field. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1415 / 1419

页数：5

共 16 条

[1] Electrochemical and solid state NMR characterization of composite PEO-based polymer electrolytes [J].

Cheung, IW ;

Chin, KB ;

Greene, ER ;

Smart, MC ;

Abbrent, S ;

Greenbaum, SG ;

Prakash, GKS ;

Surampudi, S .

ELECTROCHIMICA ACTA, 2003, 48 (14-16) :2149-2156

[2] Multinuclear solid-state NMR, self-diffusion coefficients, differential scanning calorimetry, and ionic conductivity of solid organic-inorganic hybrid electrolytes based on PPG-PEG-PPG diamine, siloxane, and lithium perchlorate [J].

Kao, HM ;

Chao, SW ;

Chang, PC .

MACROMOLECULES, 2006, 39 (03) :1029-1040

[3] AN ELECTROCHEMICAL STUDY OF PEOLIBF4-GLASS COMPOSITE ELECTROLYTES [J].

KUMAR, B ;

SCHAFFER, JD ;

NOOKALA, M ;

SCANLON, LG .

JOURNAL OF POWER SOURCES, 1994, 47 (1-2) :63-78

[4] Composite electrolytes for lithium rechargeable batteries [J].

Kumar, B ;

Scanlon, LG .

JOURNAL OF ELECTROCERAMICS, 2000, 5 (02) :127-139

[5] Ionic conduction through heterogeneous solids: Delineation of the blocking and space charge effects [J].

Kumar, B. ;

Nellutla, S. ;

Thokchom, J. S. ;

Chen, C. .

JOURNAL OF POWER SOURCES, 2006, 160 (02) :1329-1335

[6] From colloidal to composite electrolytes: properties, peculiarities, and possibilities [J].

Kumar, B .

JOURNAL OF POWER SOURCES, 2004, 135 (1-2) :215-231

[7] Structural evolution and conductivity of PEO:LiBF4-MgO composite electrolytes [J].

Kumar, B ;

Scanlon, L ;

Marsh, R ;

Mason, R ;

Higgins, R ;

Baldwin, R .

ELECTROCHIMICA ACTA, 2001, 46 (10-11) :1515-1521

[8] Ionic conductivity of polymer-ceramic composites [J].

Kumar, B ;

Rodrigues, SJ ;

Scanlon, LG .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (10) :A1191-A1195

[9] Polymer-ceramic composite electrolytes: conductivity and thermal history effects [J].

Kumar, B ;

Scanlon, LG .

SOLID STATE IONICS, 1999, 124 (3-4) :239-254

[10] Space charge-mediated ionic transport in yttria-stabilized zirconia-alumina composite membranes [J].

Kumar, Binod ;

Thokchom, Joykumar S. .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (04) :1175-1181

← 1 2 →