Fluorine substitution and pre-sodiation strategies to boost energy density of V-based NASICON-structured SIBs: Combined theoretical and experimental study

Machine-Learning-Driven High-Throughput Screening for High-Energy Density and Stable NASICON Cathodes

“…As a result of this occurrence, known as the inductive effect, NASICON materials have a higher redox potential than other types of cathode materials . In this respect, numerous studies have been conducted to develop NASICON cathode materials with high specific energy and structural stability using doping and substitution strategies, such as (1) metal site substitution using Cr, Mn, Zr, Mg, etc. − and (2) polyanion central site substitution using Si, S, F, etc. − However, as a result of the enormous variety of possible chemical elements and available atomic configurations for doping or substitution, experimenting with every potential combination to find the optimal cases is a highly demanding task.…”

Controllable synthesis of a Na-enriched Na4V2(PO4)3 cathode for high-energy sodium-ion batteries: a redox-potential-matched chemical sodiation approach

“…For instance, the Na 3 V 2 (PO 4 ) 3 (Na 3 VP) cathode can safely accommodate over-stoichiometric Na + to form novel Na-enriched materials of Na 4 V 2 (PO 4 ) 3 (Na 4 VP) and Na 5 V 2 (PO 4 ) 3 (Na 5 VP), which correspond to distinct sodiation plateaus at approximately ∼1.6 V and ∼0.3 V vs. Na + / Na, respectively. [25][26][27][28][29] Each excess Na + in the formula theoretically provides an additional 58.8 mA h g −1 charging capacity. Li et al 27 prepared a Na 4 VP electrode by electrochemically discharging Na 3 VP to 1.0 V vs. Na + /Na.…”