[5] Zhao S et al 2020 The role of phosphate group in doped cobalt molybdate: improved electrocatalytic hydrogen evolution performance Adv. Sci. 7 1903674. Crossref; Google Scholar [6] Zhang B, Qi Z, Wu Z, Lui Y H, Kim T-H, Tang X, Zhou L, Huang W and Hu S 2019 Defect-rich 2D material networks for advanced oxygen …