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A CZTSSe thin film solar cell was fabricated by a sol–gel method with an efficiency of 8.08%.

The electrochemical production of H 2 O 2 from twoelectron water oxidation in a HCO 3 − -containing aqueous electrolyte has been recently developed, but the objective issues of H 2 O 2 decomposition, low purity, and inconvenient storage options have not drawn enough attention in previous reports. In the present work, commercial fluorine-doped SnO 2 (FTO) glass was investigated as a model anode material for the electrochemical production of H 2 O 2 in a KHCO 3 aqueous electrolyte. Although H 2 O 2 was electrochemically produced in the FTO-glass-anodebased cell, the electrochemical decomposition and nonstorability of H 2 O 2 products in a KHCO 3 aqueous electrolyte were also observed. On the basis of the activation property of HCO 3 − in the conversion of H 2 O 2 into • OH, the electrochemically produced H 2 O 2 in a KHCO 3 aqueous electrolyte was investigated to achieve the degradation of methylene blue and tetracycline, respectively. Our work reveals objective issues about the electrochemical synthesis of H 2 O 2 in a HCO 3 − -containing electrolyte and provides inspired applications of this research.

A detailed investigation of the effects of Nd on the microstructure, mechanical properties and electrochemical properties of lead anode in 160g.L-1 at 35°C was carried out. Galvanostatic polarization and Chronopotentiometry (CP) were used to study the electrochemical behavior ( such as anodic potential, corrosion rate and the composition of passive film) of the Pb and Pb-Nd anodes. The metallographic structure and passive film morphology of Pb and Pb-Nd anodes were observed and analyzed using polarizing microscope and scanning electronic microscopy (SEM), respectively. The experimental results show the grains become smaller and aggregation of PbxNdy become severe as the content of Nd increases. The addition of Nd enhances the formation of PbO2, inhibits the formation of PbSO4 and PbO and reduces the anodic potential. However, Holes presenting on rough passive film of high Nd content Pb-Nd anodes accelerate the corrosion.