Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
An Ultra?thin Nonporous Polymer Separator Regulated Na Transfer Toward Dendrite?free Sodium Storage Batteries
Sodium storage batteries are one of the ever?increasing next?generation large?scale energy storage systems owing to the abundant resources and low cost. However, their viability is severely hampered by dendrite?related hazards on anodes. Herein, a novel ultra?thin (8 ?m) exterior?nonporous separator composed with honeycomb?structured fibers was prepared for homogeneous Na deposition and suppressed dendrite penetration. The unhindered ion transmission was greatly benefited from honeycomb?structured fibers with huge electrolyte uptake (376.7%) and the polymer's inherent transport ability. Additionally, polar polymer chains consisting of polyethersulfone and polyvinylidene customize the highly aggregated solvation structure of electrolytes via substantial solvent immobilization, facilitating ion?conductivity?enhanced inorganic?rich solid?electrolyte interphase with remarkably interface endurance. With the reliable mechanical strength of separator, the assembled sodium?ion full cell delivers significantly improved energy density and high safety enabling resisting stable operation under cutting and rolling. The as?prepared separator can further be generalized to lithium?based batteries for which apparent dendrite inhibition and cyclability are accessible, and demonstrates its potential for practical application.This article is protected by copyright. All rights reserved
» Publication Date: 17/01/2023
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
