Título: Nano EnergyImportada do Authenticus Pesquisar Publicações da Revista

Vol. 22

Páginas: 396-405

ISSN: 2211-2855

Editora: Elsevier

ISI Web of Knowledge - 56 Citações

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INSPEC

CORDIS: Ciências Tecnológicas

ID Authenticus: P-00K-8AJ

DOI: 10.1016/j.nanoen.2016.02.029

Abstract (EN): Electricity from renewable energy sources is craving for efficient storage technologies, in particular solar industry, to enable practical small-scale solutions for residential and offices use. The best stationary technology is probably the redox flow batteries. This article proposes the direct conversion of sunlight into electrochemical energy stored in a redox flow battery. A photoelectrochemical cell is used to charge a vanadium redox flow cell (CdS(s)|V3+, VO2+||V3+, V2+|Carbon Felt(s), E0 =0.6 VNHE). A CdS thin film photoelectrode is prepared to directly charge the cell, pairs V3+/VO2+. CdS photoanode exhibits competitive photocurrents, when compared to other photoelectrochemical devices, and yields enough photovoltage to charge the vanadium battery up to 75% with no external bias. An overlayer of CdSe improves the performance of CdS with current densities up to ca. 1.4 mA cm
2 . Finally, a tandem configuration is tested using a dye-sensitized solar cell and a CdS photoanoade creating 1.3 V of photovoltage. This tandem arrangement proves to charge conventional all vanadium redox cell (DSC/CdS(s)|VO2+, VO2 +||V3+, V2+|Carbon Felt(s), E0 =1.2 VNHE) without external bias.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10

Tipo de Licença: