Authors
Adi Tiara Zikri, Muqoil Darussalam, Muhammad Hilmy Alfaruqi, Wangchae Jeong, Sanghyeon Lee, Junghwan Oh, Jaekook Kim
Published in
Small (Weinheim an der Bergstrasse, Germany). Pages e74479. Jul 10, 2026. Epub Jul 10, 2026.
Abstract
NASICON-based sodium superionic conductors are promising cathode materials for sodium-ion batteries and hybrid aqueous batteries. However, a common NASICON cathode, Na3V2(PO4)3 (NVP), uses vanadium, which is expensive and toxic, so more sustainable alternatives are needed. Despite efforts to explore alternative NASICON-type materials, few viable cathodes can offer a comparable electrochemical performance while reducing or eliminating V. Dual-substituent Na3Ti0.5VMn0.5(PO4)3 (NTVMP) and Na3Ti0.5VFe0.5(PO4)3 (NTVFP) have been suggested as a means to reduce the use of V in NASICON-based materials. One major challenge in battery design is understanding how the cathode materials store energy. In this study, we examined how NTVMP and NTVFP store energy to help develop future rechargeable hybrid aqueous batteries. In the galvanostatic charge-discharge curves of NTVMP and NTVFP, two voltage plateaus appeared in a hybrid electrolyte (2 M CH3COONa + 1 M (CH3COO)2 Zn). The analysis showed that insertion/extraction at a high voltage of ∼1.50 V is dominated by Zn2 + ions, and Na+ ion insertion/extraction is dominant at a lower voltage of ∼0.30 V, indicating the presence of multi-electron and multi-ion reactions. In situ X-ray diffraction and ex situ X-ray showed a reversible lattice parameter and transition metal transformation during cycling, indicating a reversible insertion/extraction ion process.
PMID:
42429038
Bibliographic data and abstract were imported from PubMed on 10 Jul 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 9
- Comments 0