• 文献标题:   One-step synthesis of nitrogen-decorated CeO2/reduced graphene oxide nanocomposite and its electrocatalytic activity for triiodide/iodide reduction
  • 文献类型:   Article
  • 作  者:   WEI LG, WU QH, YANG YS, JIANG B, SUN GL, FENG J, YU FR, KANG Y, DONG GH
  • 作者关键词:   photovoltaic, composite, catalytic
  • 出版物名称:   JOURNAL OF MATERIALS RESEARCH
  • ISSN:   0884-2914 EI 2044-5326
  • 通讯作者地址:   Heilongjiang Univ Sci Technol
  • 被引频次:   0
  • DOI:   10.1557/jmr.2020.113
  • 出版年:   2020

▎ 摘  要

The nitrogen-decorated CeO2/reduced graphene oxide nanocomposite (CeO2/N-rGO) was one-step synthesized by a facile hydrothermal technique and applied as counter electrode materials for dye-sensitized solar cells (DSSCs). For comparison, CeO2/rGO and rGO were also synthesized by adjusting corresponding reactants. It was found that the as-synthesized CeO2/N-rGO shows better electrocatalytic activity for triiodide/iodide reduction than that of pure rGO and CeO2/rGO, and a synergistic effect of nitrogen and CeO2 on the rGO sheets was observed. The photoelectric conversion efficiency of DSSCs based on CeO2/N-rGO counter electrode was 3.20%, which is higher than that of CeO2/rGO (2.45%) and rGO counter electrode (1.37%). Furthermore, the synergistic effect of nitrogen and CeO2 on the rGO sheets was also discussed in detail with different CeO2 amount levels. It is believed that this one-step synthetic method is a potential way to synthesize low-cost and efficient rGO-based multiple composited counter electrode materials to replace more expensive Pt.