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Formation of Thick Dense Yttrium Iron Garnet Films Using Aerosol Deposition
Published on: May 15, 2015
Electrodeposited-film electrodes derived from a precursor dinitrosyl iron complex for electrocatalytic water
Wei-Liang Li1, Tzung-Wen Chiou, Chien-Hong Chen
1Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan. d9623817@oz.nthu.edu.tw wfliaw@mx.nthu.edu.tw.
Abstract:
In artificial photosynthesis, water splitting plays an important role for the conversion and storage of renewable energy sources. Here, we report a study on the electrocatalytic properties of the electrodeposited-film electrodes derived from irreversible electro-reduction/-oxidation of a molecular dinitrosyl iron complex (DNIC) {Fe(NO)2}9 [(Me6tren)Fe(NO)2]+ (Me6tren = tris[2-(dimethylamino)ethyl]amine) for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) in alkaline solution, individually. For HER, the overpotential and Tafel slope for the electrodeposited-film cathode are lower than those of the equiv.-weight Pt/C electrode. The electrodeposited-film anode for the OER is stable for 139 h. Integration of the electrodeposited-film cathode and anode into a single electrode-pair device for electrocatalytic water splitting exhibits an onset voltage of 1.77 V, achieving a geometrical current density of 10 mA cm-2.
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