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March 27, 2026ACS Applied Materials & Interfaces

Tailoring Ti Content for Lattice Stable High-Entropy O3-Type Cathode for Sodium-Ion Batteries

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Authors

QXQingshan XieXHXinyu HouWDWendi Dong

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Overview

This investigation reveals compositional tuning improves structural stability and cycling performance in sodium-ion batteries.

Key Points

  • The aim is to explore how varying titanium content impacts the stability and performance of O3-type layered oxides in sodium-ion batteries.
  • Developed a high-entropy O3-type oxide series with varying Ti contents.
  • Conducted structural and spectroscopic analyses, including XRD, XAFS, and TEM.
  • Evaluated electrochemical performance through cycling tests at specified current rates.
  • Optimized composition (NaNi0.4Mn0.3Fe0.1Ti0.1Li0.05Sb0.05O2) shows ∼80% capacity retention after 200 cycles.
  • Demonstrated high rate capability of 113 mAh g−1 at 1.5 A g−1.
  • Moderate Ti incorporation improved lattice robustness and mitigated phase instability.

Cite This Study

Xie et al. (2026) studied this question.

synapsesocial.com/papers/69c61ff615a0a509bde18654https://doi.org/10.1021/acsami.6c01671
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