Science Daily June 26, 2023
CoSn(OH)6 (CSO) is a perovskite-type hydroxide that is a promising catalyst for the oxygen evolution reaction (OER). An international team of researchers (Japan, China, Thailand) synthesized and characterized CSO using a solution plasma process. Tests revealed that highly crystalline CSO could be synthesized by adjusting the pH of the precursor solution to more than 10 to 12. The synthesized CSO had a cubic shape, and its size was approximately 100 to 300 nm. The valences of Co and Sn in CSO were divalent and tetravalent, respectively. The catalytic properties were evaluated using an electrochemical method. The overpotential were estimated to be 350 mV and 69.58 mV per decade. The sample showed the most superior catalytic properties among all samples synthesized and superior to those of commercial RuO2. From the results of optical emission spectroscopy, the active species formed in the plasma were clarified and the mechanism of CSO synthesis was discussed based on the active species… read more. TECHNICAL ARTICLEÂ
Graphical abstract. Credit: Sustainable Energy & Fuels, 2023; 7 (11): 2582