2024
DOI: 10.1021/acs.energyfuels.4c00250
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Improving the Crystal Stability of O3-type Metal Oxide Cathode Materials by Cu Substitution for Na-Ion Batteries

Honghao Deng,
Yang Yang,
Liying Liu
et al.

Abstract: Nickel−iron−manganese-based (NiFeMn-based) O3-type layered oxides hold substantial promise as cathode materials for large-scale applications in sodium-ion batteries (SIBs). However, their cyclic stability still requires optimization by elemental substitution at different lattice sites. Herein, we present a high-temperature solid-state reaction synthesis of a pure O3-phase NaNi 0.3 Cu 0.1 Fe 0.2 Mn 0.4 O 2 (NCFM) exhibiting a reversible capacity of 126.5 mAh g −1 and maintaining a capacity retention of 89% afte… Show more

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