The behavior of the UPD of Sb(Ⅲ) at a platinum anode has beell systema tically studied using various electrochemical techniques such as potential sweep, potential step, and differential capacity in order to better un...The behavior of the UPD of Sb(Ⅲ) at a platinum anode has beell systema tically studied using various electrochemical techniques such as potential sweep, potential step, and differential capacity in order to better understand the effects of the UPD of Sb (Ⅲ) on the electrocatalytic activity of the substrate.Experiments show that the UPD of Sb(Ⅲ) can tch place on the surface of poly crystalline platinum. The amount of the adsorbed antimony by UPD and the dissolved antimony by anodic oxidation depends upon the potential applied. At potential greater than Eeq, antimony adsorbed atoms axe formed. As the potential becomes more positive,the amounts of the adsorbed antimony atoms decrease and a complete oxidative stripping occurs at a potential greater than 0.90V.It has been found that eath antimony adsorbed atom occupies three sites of platinum.展开更多
High performance Pt counter electrode is prepared by using vacuum thermal decomposition at a relatively low (120℃) temperature on a flexible polyethylene naphthalate substrate coated with indium-doped tin oxide for u...High performance Pt counter electrode is prepared by using vacuum thermal decomposition at a relatively low (120℃) temperature on a flexible polyethylene naphthalate substrate coated with indium-doped tin oxide for use in flexible dye-sensitized solar cells.The obtained Pt counter electrode shows a good chemical stability,high light transmittance,and high electrocatalytic activity for the I3-/I-redox reaction.The energy conversion efficiency of a flexible dye-sensitized solar cell based on the prepared Pt counter electrode and a TiO 2 /Ti photoanode reaches 5.14% under a simulated solar light irradiation with intensity of 100 mW cm-2.展开更多
文摘The behavior of the UPD of Sb(Ⅲ) at a platinum anode has beell systema tically studied using various electrochemical techniques such as potential sweep, potential step, and differential capacity in order to better understand the effects of the UPD of Sb (Ⅲ) on the electrocatalytic activity of the substrate.Experiments show that the UPD of Sb(Ⅲ) can tch place on the surface of poly crystalline platinum. The amount of the adsorbed antimony by UPD and the dissolved antimony by anodic oxidation depends upon the potential applied. At potential greater than Eeq, antimony adsorbed atoms axe formed. As the potential becomes more positive,the amounts of the adsorbed antimony atoms decrease and a complete oxidative stripping occurs at a potential greater than 0.90V.It has been found that eath antimony adsorbed atom occupies three sites of platinum.
基金supported by the National High Technology Research and Development Program of China(2009AA03Z217)the National Natural Science Foundation of China(90922028,51002053)
文摘High performance Pt counter electrode is prepared by using vacuum thermal decomposition at a relatively low (120℃) temperature on a flexible polyethylene naphthalate substrate coated with indium-doped tin oxide for use in flexible dye-sensitized solar cells.The obtained Pt counter electrode shows a good chemical stability,high light transmittance,and high electrocatalytic activity for the I3-/I-redox reaction.The energy conversion efficiency of a flexible dye-sensitized solar cell based on the prepared Pt counter electrode and a TiO 2 /Ti photoanode reaches 5.14% under a simulated solar light irradiation with intensity of 100 mW cm-2.
