Improved performance using a plasticized polymer electrolyte for quasi-solid state dye-sensitized solar cells

被引：31

作者：

Cui, Yanzheng ^{[1
]}

Zhang, Jing ^{[1
]}

Wang, Peiqing ^{[1
]}

Zhang, Xueni ^{[1
]}

Zheng, Jun ^{[1
]}

Sun, Qiang ^{[1
]}

Feng, Jiangwei ^{[1
]}

Zhu, Yuejin ^{[1
]}

机构：

[1] Ningbo Univ, Fac Sci, Ningbo 315211, Zhejiang, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2012年 / 74卷

基金：

中国国家自然科学基金;

关键词：

Dye-sensitized solar cell; Polymer electrolytes; Ionic conductivity; Electrochemical impedance measurement; LiN(SO2CF3)(2); POLY(ETHYLENE OXIDE); LIQUID ELECTROLYTES; TIO2; FILMS; EFFICIENCY; LITHIUM; CONDUCTIVITY; CONFORMATION; ION; PEO; NANOCOMPOSITES;

D O I：

10.1016/j.electacta.2012.04.061

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A PEO/P(VDF-HFP) polymer-blend electrolyte is modified by different amounts of LiN(SO2CF3)(2) (lithium bis(trifluoromethanesulfone)imide, LiTFSI). Fourier transform infrared (FT-IR) and differential scanning calorimetry (DSC) are carried out to examine the configuration changes of the polymer electrolyte. LiTFSI acts as a plasticizer influencing the ionic conductivity of the LiTFSI-modified polymer electrolyte, and improves the short-circuit photocurrent effectively. The electrochemical impedance spectroscopy (EIS) indicates that the intercalation or adsorption of overdose Li+ to the TiO2 photoanode surface positively changes the Fermi energy level and the conduction band. This improves the interface recombination in the DSSC and reduces the open-circuit voltage. With moderate LiTFSI content (0.05 g, nKI/nI(2) = 7:1) modification, the DSSC exhibits a 1.6 mA cm(-2) improvement of current density and an improved performance of 5.03% compared with 4.51% of the original DSSC. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：194 / 200

页数：7

共 46 条

[1] Determination of parameters of electron transport in dye-sensitized solar cells using electrochemical impedance spectroscopy [J].

Adachi, Motonari ;

Sakamoto, Masaru ;

Jiu, Jinting ;

Ogata, Yukio ;

Isoda, Seiji .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (28) :13872-13880

[2] Ionic conductivity and interfacial properties of nanochitin-incorporated polyethylene oxide-LiN(C2F5SO2)2 polymer electrolytes [J].

Angulakshmi, N. ;

Kumar, T. Prem ;

Thomas, Sabu ;

Stephan, A. Manuel .

ELECTROCHIMICA ACTA, 2010, 55 (04) :1401-1406

[3]

ARMAND MB, 1987, POLYM ELECTROLYTE RE, pCH1

[4] COORDINATION AND CONFORMATION IN PEO, PEGM AND PEG SYSTEMS CONTAINING LITHIUM OR LANTHANUM TRIFLATE [J].

BERNSON, A ;

LINDGREN, J ;

HUANG, WW ;

FRECH, R .

POLYMER, 1995, 36 (23) :4471-4478

[5] Hydrogen bonding effect on the poly(ethylene oxide), phenolic resin, and lithium perchlorate-based solid-state electrolyte [J].

Chen, HW ;

Jiang, CH ;

Wu, HD ;

Chang, FC .

JOURNAL OF APPLIED POLYMER SCIENCE, 2004, 91 (02) :1207-1216

[6] MOLECULAR TRANSPORT IN LIQUIDS AND GLASSES [J].

COHEN, MH ;

TURNBULL, D .

JOURNAL OF CHEMICAL PHYSICS, 1959, 31 (05) :1164-1169

[7] Connectivity, ionic interactions, and migration in a fast-ion-conducting polymer-in-salt electrolyte based on poly(acrylonitrile) and LiCF3SO3 [J].

Ferry, A ;

Edman, L ;

Forsyth, M ;

MacFarlane, DR ;

Sun, JZ .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (04) :2346-2348

[8] SYNTHESIS, PROPERTIES, AND REACTIONS OF BIS((TRIFLUOROMETHYL)SULFONYL) IMIDE, (CF3SO2)2NH [J].

FOROPOULOS, J ;

DESMARTEAU, DD .

INORGANIC CHEMISTRY, 1984, 23 (23) :3720-3723

[9] PHYSICAL-PROPERTIES OF SOLID POLYMER ELECTROLYTE PEO(LITFSI) COMPLEXES [J].

GORECKI, W ;

JEANNIN, M ;

BELORIZKY, E ;

ROUX, C ;

ARMAND, M .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, 7 (34) :6823-6832

[10]

GRAY FM, 1987, POLYM ELECTROLYTE RE, pCH6

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