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@ARTICLE{Hadouchi:894620,
author = {Hadouchi, Mohammed and Yaqoob, Najma and Kaghazchi, Payam
and Tang, Mingxue and Liu, Jie and Sang, Pengfei and Fu,
Yongzhu and Huang, Yunhui and Ma, Jiwei},
title = {{F}ast sodium intercalation in
{N}a3.41£0.59{F}e{V}({PO}4)3: {A} novel sodium-deficient
{NASICON} cathode for sodium-ion batteries},
journal = {Energy storage materials},
volume = {35},
issn = {2405-8297},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {FZJ-2021-03317},
pages = {192 - 202},
year = {2021},
abstract = {Sodium-ion battery technology is one of the best
alternative candidates to the lithium analogue due to the
low cost and the abundance of sodium. Extensive research
effort is dedicated to the development of low-cost and
high-performance cathodes. Here, a new sodium-deficient
NASICON material Na3.41£0.59FeV(PO4)3 is synthesized by a
simple sol-gel method. This new material delivers high
initial discharge capacity of 170 mAh g−1 in the voltage
range of 1.5-4.4 V vs. Na+/Na, originating from the
intercalation of about 3 Na+ per formula unit. Furthermore,
when cycled in the range of 2.0-3.8 V vs. Na+/Na, excellent
rate capability and outstanding cycle life are obtained. The
remarkable electrochemical performances are attributed to
the small volume change (2.36 $\%)$ during the sodium
extraction through a single-phase mechanism proved by in
situ X-ray diffraction (XRD). Refined XRD and 23Na
solid-state Nuclear Magnetic Resonance (NMR) combined with
Density functional theory (DFT) calculations reveal that the
sodium extraction during charge process occurs preferably
from Na2 sites. Moreover, this new cathode exhibits high
sodium diffusion kinetics confirmed by Galvanostatic
Intermittent Titration Technique (GITT). These findings
highlight the beneficial use of non-stoichiometry in
electrodes for batteries and provide rational design of
high-performance cathode materials for sodium-ion
batteries.},
cin = {IEK-1},
ddc = {624},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000621356400006},
doi = {10.1016/j.ensm.2020.11.010},
url = {https://juser.fz-juelich.de/record/894620},
}