The study by Song and Hu investigates the enhancement of oxygen evolution catalysis through the exfoliation of layered double hydroxides (LDHs). The authors apply liquid phase exfoliation to create single-layer nanosheets from LDHs, which exhibit significantly higher oxygen evolution activity compared to their bulk counterparts in alkaline conditions. Specifically, the exfoliated nanosheets from nickel-iron and nickel-cobalt LDHs outperform commercial iridium dioxide catalysts in both activity and stability. The exfoliation process increases the number of active sites and improves electronic conductivity, leading to a more efficient oxygen evolution reaction. The study demonstrates a promising approach to develop highly active and stable catalysts for water splitting, a key process in renewable energy storage.The study by Song and Hu investigates the enhancement of oxygen evolution catalysis through the exfoliation of layered double hydroxides (LDHs). The authors apply liquid phase exfoliation to create single-layer nanosheets from LDHs, which exhibit significantly higher oxygen evolution activity compared to their bulk counterparts in alkaline conditions. Specifically, the exfoliated nanosheets from nickel-iron and nickel-cobalt LDHs outperform commercial iridium dioxide catalysts in both activity and stability. The exfoliation process increases the number of active sites and improves electronic conductivity, leading to a more efficient oxygen evolution reaction. The study demonstrates a promising approach to develop highly active and stable catalysts for water splitting, a key process in renewable energy storage.