Surface modification of FePO4 particles with conductive layer of polypyrrole

被引：10

作者：

Fedorkova, Andrea ^{[1
]}

Wiemhoefer, Hans-Dieter ^{[2
]}

Orinakova, Renata ^{[3
]}

Orinak, Andrej ^{[3
]}

Kaniansky, Dusan ^{[1
]}

机构：

[1] Comenius Univ, Fac Sci, Dept Analyt Chem, SK-84215 Bratislava 4, Slovakia

[2] Univ Munster, Inst Inorgan & Analyt Chem, D-48149 Munster, Germany

[3] Safarik Univ, Inst Chem, Fac Sci, SK-04154 Kosice, Slovakia

来源：

SOLID STATE SCIENCES | 2010年 / 12卷 / 05期

关键词：

Polypyrrole; Oxidative polymerization; Lithium ion batteries; Iron (III) phosphate; LITHIUM BATTERIES; ELECTRODE;

D O I：

10.1016/j.solidstatesciences.2010.01.030

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Polypyrrole-FePO4 powder was synthesized by an oxidative polymerization of pyrrole monomer on the surface of FePO4 powder. The polymerization reaction was initiated using hydrogen peroxide in an acidified solution and catalysed with Fe3+. The samples were investigated by light microscopy (LM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX). These methods confirmed the presence of polypyrrole on FePO4 particles and its homogeneous distribution in the composite material. To determine the PPy content in the PPy-FePO4 composites a thermogravimetric analysis was used. Cyclic voltammetry curves (CV) were measured and compared in a non-aqueous lithium salt solution for electrodes consisting of pellets made from pure FePO4 and FePO4/PPy. Electrochemical impedance spectroscopy (EIS) showed that coating of PPy significantly decreases the charge transfer resistance of PPy-FePO4 electrodes. (C) 2010 Elsevier Masson SAS. All rights reserved.

引用

页码：924 / 928

页数：5

共 10 条

[1] Conducting composites of polypyrrole and polyaniline - A review [J].

Bhattacharya, A ;

De, A .

PROGRESS IN SOLID STATE CHEMISTRY, 1996, 24 (03) :141-181

[2] Ruthenium oxide-added quartz iron phosphate as a new intercalation electrode in rechargeable lithium cells [J].

Croce, F ;

D'Epifanio, A ;

Reale, P ;

Settimi, L ;

Scrosati, B .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (05) :A576-A581

[3] Greener method for high-quality polypyrrole [J].

Dias, H. V. Rasika ;

Fianchini, Mauro ;

Rajapakse, R. M. Gamini .

POLYMER, 2006, 47 (21) :7349-7354

[4] Improving lithium batteries by tethering carbon-coated LiFePO4 to polypyrrole [J].

Huang, Yun-Hui ;

Park, Kyu-Sung ;

Goodenough, John B. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (12) :A2282-A2286

[5] Enzymatic synthesis and characterization of a water-soluble, conducting poly(o-toluidine) [J].

Nabid, MR ;

Entezami, AA .

EUROPEAN POLYMER JOURNAL, 2003, 39 (06) :1169-1175

[6] Phospho-olivines as positive-electrode materials for rechargeable lithium batteries [J].

Padhi, AK ;

Nanjundaswamy, KS ;

Goodenough, JB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (04) :1188-1194

[7] Neutron diffraction and electrochemical studies on Li1-xAg2Sn [J].

Sreeraj, Puravankara ;

Wiemhoefer, Hans-Dieter ;

Hoffmann, Kolf-Dieter ;

Walter, Jens ;

Kirfel, Armin ;

Poettgen, Rainer .

SOLID STATE SCIENCES, 2006, 8 (07) :843-848

[8] Catalytic synthesis of conductive polypyrrole using iron(III) catalyst and molecular oxygen [J].

Toshima, N ;

Ihata, O .

SYNTHETIC METALS, 1996, 79 (02) :165-172

[9]

van der Pauw L J., 1958, PAUW, Philips Research Reports, V13, P1

[10] An investigation of polypyrrole-LiFePO4 composite cathode materials for lithium-ion batteries [J].

Wang, GX ;

Yang, L ;

Chen, Y ;

Wang, JZ ;

Bewlay, S ;

Liu, HK .

ELECTROCHIMICA ACTA, 2005, 50 (24) :4649-4654

← 1 →