The answer is in the sheets: 2D nanosheets as anodes in Li-ion batteries

https://phys.org/news/2022-10-sheets-2d-nanosheets-anodes-li-ion.html

"oxidizing TiB2 powder with hydrogen peroxide, centrifuging and freeze-drying... scalability... stirring... dissolution and recrystallization behavior exhibited by TiB2... anodic Li-ion half-cell... THNS... anode... high discharge capacity 380 mAh/g... current density 0.025 A/g... discharge capacity 174 mAh/g could be obtained for a... high current density 1 A/g... charge time 10 min capacity retention 89.7% after 1,000 cycles... current rates... 15 to 20 A/g... 9 to 14 seconds. Under... capacity retention greater than 80%"