Bui, H., Nguyen Thi , G., Pham Hong, H., Ngo Thi Anh , T., Do, L., Nguyen Duc, L., Nguyen Thi, M., Nguyen Thanh , T. and Vu Thi Kim , O. 2024. Effect of Precursor and Calcination Time on the Morphological Structure and Catalytic Activity of Co3O4 Film in the Oxygen Evolution Reaction. Communications in Physics. 34, 1 (Feb. 2024), 45. DOI:https://doi.org/10.15625/0868-3166/18878.