Artículo
Advancements in Quasi-Solid-State Li Batteries: A Rigid Hybrid Electrolyte Using LATP Porous Ceramic Membrane and Infiltrated Ionic Liquid
Reinoso, Deborath Mariana
; de la Torre Gamarra, Carmen; Fernández Ropero, Antonio J.; Levenfeld, Belén; Várez, Alejandro

Fecha de publicación:
06/02/2024
Editorial:
American Chemical Society
Revista:
ACS Applied Energy Materials
ISSN:
2574-0962
e-ISSN:
2574-0962
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Despite the progress made in Li-ion battery components, technology still faces major challenges. Among them, the development of novel electrolytes with promising characteristics is required for next-generation energy storage devices. In this work, rigid hybrid electrolytes have been prepared by infiltration of an ionic liquid solution (Pyr14TFSI) with a lithium salt (LiTFSI) into a sintered LATP ion-conducting porous ceramic. The porous ceramic 3D network was obtained via solid-state sintering of LATP powders mixed with a small amount of corn starch as pore former. A synergetic effect between the ionic liquid and support was evidenced. The resultant quasi-solid-state hybrid electrolytes exhibit high ionic conductivity (∼10–3 S·cm–1 at 303 K), improved ion transfer number, tLi+, and a wide electrochemical window of 4.7–4.9 V vs Li+/Li. The LATP porosity plays a critical role in the free Li+ charge because it favors higher TFSI– confinement in the ceramic interfaces, which consequently positively influences tLi+ and ionic conductivity. Electrochemical tests conducted at room temperature for Li/LiFePO4 cells using the hybrid electrolyte exhibited a high capacity of 150 mAh·g–1LFP at C/30, and still retained 60 mAh·g–1 LFP at 1 C, while bare LATP does not perform well at low temperatures. These findings highlight this hybrid electrolyte as a superior alternative to the ceramic LATP electrolyte and a safer option compared with conventional organic electrolytes.
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Articulos(INQUISUR)
Articulos de INST.DE QUIMICA DEL SUR
Articulos de INST.DE QUIMICA DEL SUR
Citación
Reinoso, Deborath Mariana; de la Torre Gamarra, Carmen; Fernández Ropero, Antonio J.; Levenfeld, Belén; Várez, Alejandro; Advancements in Quasi-Solid-State Li Batteries: A Rigid Hybrid Electrolyte Using LATP Porous Ceramic Membrane and Infiltrated Ionic Liquid; American Chemical Society; ACS Applied Energy Materials; 7; 6-2-2024; 1527-1538
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