Graphene nanoplatelets doped with N at its edges as metal-free cathodes for organic dye-sensitized solar cells.
basic_science · Level V
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- Record sourced from PubMed, PMID 24677174.
- Also identified by DOI 10.1002/adma.201304986.
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Abstract
Challenging precious Pt-based electrocatalysts for dye-sensitized solar cells (DSSCs), graphene nanoplatelets that are N-doped at the edges (NGnPs) are prepared via simply ball-milling graphite in the presence of nitrogen gas. DSSCs based on specific nanoplatelets designated "NGnP5" display superior photovoltaic performance (power conversion efficiency, 10.27%) compared to that of conventional Pt-based devices (9.96%). More importantly, the NGnP counter electrode exhibits outstanding electrochemical stability and electrocatalytic activity with a cobalt-complex redox couple.