| Title |
Multinuclear solid-state NMR study of the aqueous solid-electrolyte interphase formation in NaTi2(PO4)3 / |
| Authors |
Klimavičius, Vytautas ; Traškina, Nadežda ; Dubauskas, Aurimas ; Manionis, Matas ; Pilipavičius, Jurgis ; Vilčiauskas, Linas |
| DOI |
10.1021/acsaem.4c02224 |
| Full Text |
|
| Is Part of |
ACS applied energy materials.. Washington : American Chemical Society (ACS). 2024, vol. 7, iss. 24, p. 11665-11669.. eISSN 2574-0962 |
| Keywords [eng] |
NASICON ; NTP ; aqueous batteries ; solid-state NMR ; ex situ |
| Abstract [eng] |
Solid-electrolyte interphases enable stable operation of non-aqueous Li-ion batteries, but their formation, especially in aqueous systems, is not well understood. NASICON-structured NaTi2(PO4)3 is a widely studied ion insertion negative electrode material for various aqueous electrochemical applications. This study uses multinuclear 31P, 23Na, 13C, 47,49Ti solid-state NMR to examine NaTi2(PO4)3 aqueous degradation and solid-electrolyte interphase formation. The results indicate that interphase consists of amorphous phases similar to TiO(OH)(H2PO4)·nH2O and carboxylic groups on carbonaceous phases, formed through electrochemical degradation. The formation of the aqueous solid-electrolyte interphase results in low Coulombic efficiency, pronounced self-discharge, and capacity loss of NaTi2(PO4)3 during charge–discharge cycling. |
| Published |
Washington : American Chemical Society (ACS) |
| Type |
Journal article |
| Language |
English |
| Publication date |
2024 |
| CC license |
|
