Enhancement of Diffusion-Controlled Pseudocapacity in Biphasic NaMnO _<b>2</b> Electrodes for Sodium Batteries by Tailoring Structural and Morphological Properties.

ABSTRACT: In this study, we present a biphasic (orthorhombic/monoclinic) NaMnO₂ material synthesized by using cheap and low-temperature sol-gel methods, which presents potential applications as an advanced cathode material for aqueous sodium-ion energy storage. By leveraging its unique structural and morphological properties, our approach optimizes the balance between diffusion-controlled and surface-controlled pseudocapacitive charge storage, significantly enhancing electrochemical performance with capacity values over 100 mAh/g. Electrochemical investigations reveal that the tailored morphology of NaMnO₂ allows for a high pseudocapacitive contribution, with the Na₂SO₄ electrolyte exhibiting the most stable cycling behavior and the highest capacity retent

SUBMITTER: Boichuk A 

PROVIDER: S-EPMC12242681 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature