Global GET-Future Laboratory & Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, 339-700, Korea.
Adv Mater. 2014 May 21;26(19):3055-62. doi: 10.1002/adma.201304986. Epub 2014 Feb 12.
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.
用于染料敏化太阳能电池（DSSC）的 Pt 基电催化剂极具挑战性，通过在氮气存在下简单地将石墨球磨，制备了边缘氮掺杂的石墨烯纳米片（NGnPs）。与传统的 Pt 基器件（9.96%）相比，基于特定纳米片的 DSSC（标记为“NGnP5”）显示出优异的光伏性能（功率转换效率为 10.27%）。更重要的是，NGnP 对电极与钴配合物氧化还原偶对表现出出色的电化学稳定性和电催化活性。
