Single-atom catalysis in mesoporous photovoltaics: the principle of utility maximization.

Shi, Yantao; Zhao, Chunyu; Wei, Haisheng; Guo, Jiahao; Liang, Suxia; Wang, Aiqin; Zhang, Tao; Liu, Jingyue et al. · Adv Mater · 2014

basic_science · Level V

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Abstract

FeOx -supported single Pt atoms are used for the first time as counter electrodes (CEs) in dye-sensitized solar cells (DSCs), which are mesoporous photovoltaic devices. This system enables the investigation of the electrocatalytic behavior of a single-atom catalyst (SAC). Compared with conventional Pt CEs, the SAC-based CEs exhibit better reversibility as indicated by the peak-to-peak separation (Epp ). A high degree of atom utilization is demonstrated.