 This study presents a new approach to improving the stability of ruthenium oxides used in the oxygen evolution reaction, OER. Rethenium oxide is commonly used as a catalyst in this reaction, but its limited durability has prevented its widespread use. This study proposes using a caged precursor of ruthenium oxide, which is then calcined to form a coating of carbon on the surface of the catalyst. This process results in a stable catalyst that can last up to 100 hours in 0.5 mH2SO4 without significant degradation. Furthermore, the catalyst shows superior performance compared to other catalysts with an over-potential of just 220 mV at 10 mA Cm2. This study demonstrates the potential of this method for improving the stability of ruthenium oxide catalysts, making them more suitable for practical applications. This article was authored by Chu and Xiang Liu, Yun Bu Jiang, Ting Wang, and others. We are article.tv, links in the description below.