Título: Solar EnergyImportada do Authenticus Pesquisar Publicações da Revista

Vol. 86 Nº 2

ISSN: 0038-092X

Editora: Elsevier

ISI Web of Knowledge - 87 Citações

ISI Web of Science

Scopus - 98 Citações

INSPEC

FOS: Ciências da engenharia e tecnologias > Engenharia química

ID Authenticus: P-002-DFZ

DOI: 10.1016/j.solener.2011.11.010

Abstract (EN): Stand-alone graphene-based films were prepared from graphene oxide (GO) nanoplatelets and their use as counter-electrodes (CEs) in dye-sensitized solar cells (DSCs) was investigated. The graphene-based CEs were produced by spray deposition of GO and chemically reduced GO, followed by thermal annealing under an inert atmosphere. These GO-based CEs were shown to have similar transparency as a reference CE made of Pt. Consistent with impedance data from symmetrical half-cells, DSCs assembled with such GO-based CEs exhibited relative efficiencies of ca. 75% comparatively to the reference Pt CE. The possibility of obtaining transparent (transmittance higher than 80%) and reasonable catalytic films for DSCs (energy conversion efficiency of 2.64%) from GO nanoplatelets was demonstrated. The need for reduction of the graphene oxide nanoplatelets prior to deposition was not observed, allowing for a simplified CE manufacturing process. However, further work is still needed to equal or surpass the performance of Pt CEs.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Publicação abrangida pelo Journal Citation Reports 2015

Nº de páginas: 9