Work

Organic Plastic Crystal Composite Electrolytes: A Path to High-Conductivity and Low-Temperature Operation in Solid-State Lithium Batteries

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Solid-state batteries are the next generation of electrochemical devices, offering enhanced safety and higher energy density for the energy transition. Among solid electrolytes, composite polymers are appealing candidates due to their balanced ionic conductivity and mechanical flexibility compared to their purely inorganic or polymeric counterparts. In this work, we develop a composite polymer electrolyte incorporating an organic ionic plastic crystal (OIPC) into a poly(ethylene) oxide matrix with a Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 ceramic filler. The addition of the OIPC significantly enhances the ionic conductivity by a factor of 3 at room temperature. Coupled with the mechanical reinforcement from the ceramic phase, the resulting electrolyte enables cycling in full cells at 40 °C, a temperature typically unsuitable for PEO-based systems. Besides elucidating the synergistic effects of the composite electrolyte, its electrochemical assessment is validated in symmetric lithium cells and full LiFePO 4 cathodes, validating the potential of this electrolyte system for advanced battery applications.

Source: ACS Applied Energy Materials

DOI: 10.1021/acsaem.5c01924

Authors: Arianna Pesce, Francisco Jose Fernandez Carretero, Francisco Javier Azpiroz Dorronsoro, Juan Miguel López del Amo, Pedro López-Aranguren

Institutions: CIC energiGUNE, Euskadiko Parke Teknologikoa, Tecnalia

Language: English

Topic: Advanced Battery Materials and Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $4,500