Entropy-Driven Mechanisms in P2-Type Layered Oxide Cathodes for Sodium-Ion Batteries: New Insights from First-Principles and Electrochemical Analysis

Arianna Massaro; Silvia Porporato; Miriam Botros; Alessandro Piovano; Hamideh Darjazi; David Stenzel; Giuseppina Meligrana; Ana Belén Muñoz-García; Ben Breitung; Michele Pavone; Claudio Gerbaldi

doi:10.1039/d6ta00673f

January 1, 2026Journal of Materials Chemistry AOpen Access

Entropy-Driven Mechanisms in P2-Type Layered Oxide Cathodes for Sodium-Ion Batteries: New Insights from First-Principles and Electrochemical Analysis

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Key Points

This research investigates the mechanisms limiting the stability of P2-type layered oxides in sodium-ion batteries.
First-principles computational analysis to explore structural properties
Electrochemical testing to assess cycling performance
Phase transition analysis under operational conditions
Identified critical phase transitions that occur during cycling
Demonstrated that transition-metal migration negatively impacts stability
Provided insights into entropy-driven effects on structural configurations

Implication

Research reveals entropy-driven mechanisms affecting cycling stability in sodium-ion battery cathodes, suggesting improvements for performance.

Abstract

P2-type NaxMO2 layered oxides (x < 1) are highly promising cathodes for Na-ion batteries (NIBs) but suffer from phase transitions, transition-metal (TM) migration, and structural distortions that limit cycling stability....

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Cite This Study

Massaro et al. (2026) studied this question.

synapsesocial.com/papers/69d9e57078050d08c1b75b07 https://doi.org/10.1039/d6ta00673f

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Entropy-Driven Mechanisms in P2-Type Layered Oxide Cathodes for Sodium-Ion Batteries: New Insights from First-Principles and Electrochemical Analysis

Key Points

Implication

Abstract

Discussion

Cite This Study

Entropy-Driven Mechanisms in P2-Type Layered Oxide Cathodes for Sodium-Ion Batteries: New Insights from First-Principles and Electrochemical Analysis

Key Points

Implication

Abstract

Discussion

Cite This Study

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