To, T.M., Nguyen, T.L., Duong, T.N., Nguyen Thi, B.T., Pham Vu, N., Nguyen, D.K. and Dang, M.T. 2026. Adsorption mechanism of sodium polysulfide clusters on selenium-doped Ti2CO2 MXenes for application in sodium-sulfur batteries. VNUHCM Journal of Engineering and Technology. 9, (Jan. 2026), in press.