Graphene Nanoplatelets Outperforming Platinum as the Electrocatalyst in Co-Bipyridine-Mediated Dye-Sensitized Solar Cells

被引：327

作者：

Kavan, Ladislav ^{[1
,2
]}

Yum, Jun-Ho ^{[2
]}

Graetzel, Michael ^{[2
]}

机构：

[1] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, Vvi, CZ-18223 Prague, Czech Republic

[2] Swiss Fed Inst Technol, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

来源：

NANO LETTERS | 2011年 / 11卷 / 12期

基金：

欧洲研究理事会;

关键词：

Graphene; dye sensitized solar cell; cobalt redox shuttle; electrochemical impedance spectroscopy; COUNTER-ELECTRODE; MASS-TRANSPORT; CARBON; COMPLEXES;

D O I：

10.1021/nl203329c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Graphene nanoplatelets (GNP) in the form of thin semitransparent films on F-doped SnO2 (FTO) exhibit high electrocatalytic activity for the Co(bpy)(3)(3+/2+) redox couple in acetonitrile electrolyte solution. The GNP film is superior to the traditional electrocatalyst, that is, platinum, both in charge-transfer resistance (exchange current) and in electrochemical stability under prolonged potential cycling. The good electrochemical performance of GNP is readily applicable for dye-sensitized solar cells with Y123-sensitized TiO2 photoanodes and Co(bpy)(3)(3+/2+) as the redox shuttle. The dye-sensitized solar cell with GNP cathode is superior to that with the Pt-FTO cathode particularly in fill factor and in power conversion efficiency at higher illumination intensity.

引用

页码：5501 / 5506

页数：6

共 25 条

[1] Design of Organic Dyes and Cobalt Polypyridine Redox Mediators for High-Efficiency Dye-Sensitized Solar Cells [J].

Feldt, Sandra M. ;

Gibson, Elizabeth A. ;

Gabrielsson, Erik ;

Sun, Licheng ;

Boschloo, Gerrit ;

Hagfeldt, Anders .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (46) :16714-16724

[2] Characterization of screen printed carbon counter electrodes for Co(II)/(III) mediated photoelectrochemical cells [J].

Ghamouss, Fouad ;

Pitson, Robbin ;

Odobel, Fabrice ;

Boujtita, Mohammed ;

Caramori, Stefano ;

Bignozzi, Carlo A. .

ELECTROCHIMICA ACTA, 2010, 55 (22) :6517-6522

[3] Photoelectrochemical cells [J].

Grätzel, M .

NATURE, 2001, 414 (6861) :338-344

[4] Dye-Sensitized Solar Cells [J].

Hagfeldt, Anders ;

Boschloo, Gerrit ;

Sun, Licheng ;

Kloo, Lars ;

Pettersson, Henrik .

CHEMICAL REVIEWS, 2010, 110 (11) :6595-6663

[5] Dye-sensitized solar cell redox shuttles [J].

Hamann, Thomas W. ;

Ondersma, Jesse W. .

ENERGY & ENVIRONMENTAL SCIENCE, 2011, 4 (02) :370-381

[6] Diffusion in the electrolyte and charge-transfer reaction at the platinum electrode in dye-sensitized solar cells [J].

Hauch, A ;

Georg, A .

ELECTROCHIMICA ACTA, 2001, 46 (22) :3457-3466

[7] Graphene Nanoplatelet Cathode for Co(III)/(II) Mediated Dye-Sensitized Solar Cells [J].

Kavan, Ladislav ;

Yum, Jun-Ho ;

Nazeeruddin, Mohammad Khaja ;

Graetzel, Michael .

ACS NANO, 2011, 5 (11) :9171-9178

[8] Optically Transparent Cathode for Dye-Sensitized Solar Cells Based on Graphene Nanoplatelets [J].

Kavan, Ladislav ;

Yum, Jun Ho ;

Graetzel, Michael .

ACS NANO, 2011, 5 (01) :165-172

[9] Mass transport and charge transfer rates for Co(III)/Co(II) redox couple in a thin-layer cell [J].

Liberatore, M. ;

Petrocco, A. ;

Caprioli, F. ;

La Mesa, C. ;

Decker, F. ;

Bignozzi, C. A. .

ELECTROCHIMICA ACTA, 2010, 55 (12) :4025-4029

[10] Using EIS for diagnosis of dye-sensitized solar cells performance [J].

Liberatore, M. ;

Decker, F. ;

Burtone, L. ;

Zardetto, V. ;

Brown, T. M. ;

Reale, A. ;

Di Carlo, A. .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2009, 39 (11) :2291-2295

← 1 2 3 →