Projects per year
Abstract
Bi-phasic O3/P2 sodium layered oxides have emerged as leading candidates
for the commercialisation of next-generation sodium-ion batteries.
However, beyond simply altering the sodium content, rational control of
the O3/P2 ratio in these materials has proven particularly challenging
despite being crucial for the realization of high-performance electrode
materials. Here, using abundant elements, we manipulate the O3/P2 ratio
using the average ionic radius of the transition metal layer and
different synthesis conditions. These methods allow deterministic
control over the O3/P2 ratio, even for constant Na contents. In
addition, tuning the O3/P2 ratio yields high-performing materials with
different performance characteristics, with a P2-rich material achieving
high rate capabilities and excellent cycling stability (92% retention,
50 cycles), while an O3-rich material displayed an energy density up to
430 Wh kg−1, (85%, 50 cycles). These insights will help guide
the rational design of future high-performance materials for sodium-ion
batteries.
Original language | English |
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Article number | 6 |
Number of pages | 7 |
Journal | Communications Materials |
Volume | 4 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2 Feb 2023 |
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Dive into the research topics of 'Manipulating O3/P2 phase ratio in bi-phasic sodium layered oxides via ionic radius control'. Together they form a unique fingerprint.Projects
- 4 Finished
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Light Element Analysis Facility (LEAF): Light Element Analysis Facility (LEAF)
Irvine, J. T. S. (PI), Baker, R. (CoI) & Miller, D. N. (CoI)
5/04/20 → 4/04/23
Project: Standard
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NEXGENNA: Next Generation Na-ion Batteries
Irvine, J. T. S. (PI), Armstrong, R. (CoI) & Morris, R. E. (CoI)
1/10/19 → 30/09/23
Project: Standard
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CRITICAT Equipment Account: CRITICAT Equipment Fund
Smith, A. D. (PI)
21/07/14 → 30/06/15
Project: Standard