標題: Study on Oxidation State Dependent Electrocatalytic Ability for I-/I-3(-) Redox Reaction of Reduced Graphene Oxides
作者: Yeh, Min-Hsin
Lin, Lu-Yin
Huang, Tzu-Yen
Chuang, Hui-Min
Chu, Chih-Wei
Ho, Kuo-Chuan
光電工程學系
Department of Photonics
關鍵字: Counter electrode;Dye-sensitized solar cells;Electrocatalytic ability;Photothermal reduction process;Reduced graphene oxide
公開日期: 1-一月-2014
摘要: The influence of oxidation states on electrocatalytic abilities for I-3(-) reduction is discussed for reduced graphene oxide (rGO), which is a promising catalyst of counter electrodes for dye-sensitized solar cells (DSSCs). The oxidation states of rGO can be controlled via a photothermal reduction process by varying exposure times. The results reveal that the rGO with lower oxidation state shows smaller charge transfer resistance at the electrode/electrolyte interface and better electrocatalytic ability attributed to higher standard heterogeneous rate constant (k(0)) and reasonable electrochemical surface area (A(e)) for I-3(-) reduction, both are quantitatively determined by a rotating disk electrode system using the Koutecky-Levich equation.
URI: http://dx.doi.org/10.1002/elan.201300321
http://hdl.handle.net/11536/24578
ISSN: 1040-0397
DOI: 10.1002/elan.201300321
期刊: ELECTROANALYSIS
Volume: 26
Issue: 1
起始頁: 147
結束頁: 155
顯示於類別:期刊論文


文件中的檔案:

  1. 000337699600017.pdf