High‐Performance Mg–O₂ Batteries Enabled by Electrospinning PVDF‐HFP‐Based Quasi‐Solid‐State Polymer Electrolyte

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Abstract This article reports a high‐performance rechargeable battery enabled by an electrospun quasi‐solid‐state electrolyte (E‐QSSE). The E‐QSSE, composed of Poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP), Mg(NO 3 ) 2 salt, and Pyr 14 TFSI ionic liquid (IL), exhibits high Mg 2+ ion transport interfacial stability. A unique sandwich structure coupling the E‐QSSE with Ruthenium nanoparticles decorated multi‐walled carbon nanotubes (Ru/CNT) cathode catalyst on paper significantly augments electrochemical reversibility. optimized 1:1 molar ratio salt IL achieves room temperature conductivity 6.39 mS cm −1 . E‐QSSE's stability window extends up to 3.95 V, showcasing its potential for high‐energy‐density applications. Mg‐O cell, delivers 115 discharge/charge cycles at 100 mA g , one longest reported cycle‐lives secondary batteries. maximum discharge capacity 9305 mAh 100% Coulombic efficiency. X‐ray photoelectron spectroscopy absorption near‐edge analyses reveal MgO as primary product, MgF contributing stable solid interphase. design promotes efficient migration reactions. work advances development stable, high‐capacity batteries can open avenues electrolytes in post‐lithium metal‐air technologies.

Language: Английский

Superionic Quasi-Solid-State Electrolyte for Rechargeable Magnesium–Oxygen Batteries

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1440 - 1446

Published: March 19, 2025

Language: Английский