Ahmad, Sheraz Din, Haleem Ud Nguyen, Cuong Q. Nguyen, Son-Tung Nguyen, C. 2024-02-13T05:00:31Z 2024-02-13T05:00:31Z 2024-02-13 2024-02 1477-9226 https://pubs.kist.re.kr/handle/201004/148605 A significant problem in the area of rechargeable alkali ion battery technologies is the exploration of anode materials with overall high specific capacities and superior physical properties. By using first-principles calculations, we have determined that monolayer TiSi2N4 is precisely such a potential anode candidate. Its demonstrated dynamic, thermal, mechanical, and energetic stabilities make it feasible for experimental realization. An important benefit of the electrode conductivity is that the electronic structure reveals that the pristine system experiences a change from a semiconductor to a metal throughout the entire alkali adsorption process. What's more interesting is that monolayer TiSi2N4 can support up to double-sided 3-layer ad-atoms, resulting in extremely high theoretical capacities for Li, Na, Mg, and K of 1004, 854, 492 and 531 mA h g(-1) and low average open-circuit voltages of 0.55, 0.25, 0.55, and -1.3 V, respectively. Alkali diffusion on the surface has been demonstrated to occur extremely quickly, with migration energy barriers for Li, Na, Mg, and K as low as 0.25, 0.14, 0.10, and 0.07 eV, respectively. The results reveal that the migration barrier energy is the lowest for Li and Mg from path-2 and Na and K from path-1. Overall, these findings suggest that monolayer TiSi2N4 is a suitable anode candidate for use in high-performance and low-cost metal-ion batteries. English Royal Society of Chemistry Alkali to alkaline earth metals: a DFT study of monolayer TiSi2N4 for metal ion batteries Article 10.1039/d3dt03946c 1 Dalton Transactions, v.53, no.8, pp.3785 - 3796 Dalton Transactions 53 8 3785 3796 N scie scopus 001156344000001 2-s2.0-85183967929 Chemistry, Inorganic & Nuclear Chemistry Article LI-ION ANODE MATERIAL NEGATIVE ELECTRODES LITHIUM CRYSTAL