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.
Original language | English |
---|---|
Pages (from-to) | 3055-3062 |
Number of pages | 8 |
Journal | Advanced Materials |
Volume | 26 |
Issue number | 19 |
DOIs | |
State | Published - 21 May 2014 |
Keywords
- electrocatalysts
- electrode materials
- graphene
- nanoplatelets
- solar cells