Development of sodium hybrid quasi-solid electrolytes based on porous NASICON and ionic liquids
Articles
Overview
published in
publication date
- December 2021
start page
- 7723
end page
- 7733
issue
- 15
volume
- 41
Digital Object Identifier (DOI)
full text
International Standard Serial Number (ISSN)
- 0955-2219
Electronic International Standard Serial Number (EISSN)
- 1873-619X
abstract
- Lithium-ion batteries are currently the alternative of choice to overcome the increasing demand of energy. However, besides the scarcity of lithium and limited geolocation, it is believed that such batteries have already reached their maximum maturity. Sodium batteries emerge as an alternative to produce the new, so called, post-lithium batteries. In this study, we explore (i) the effect of sodium content and sintering temperature in solid electrolytes based in NASICON-type compounds and (ii) the use of two methodologies to obtain porous NASICON samples: application of natural substances and organic materials as pore-formers and freeze casting. The main purpose is the attainment of hybrid quasi-solid state electrolytes, with enhanced room temperature conductivity, based on porous ceramic electrolyte layers infiltrated with ionic liquids. Using this approach, porous samples with different microstructure and porous morphology and distribution were achieved, providing an enhancement in conductivity (ranging from 0.45 to 0.96 mS cm−1 at 30 °C) of one order of magnitude for infiltrated samples respect to pore-free samples. According to these results the porous NASICON might be considered as a functional macroporous inorganic separator that can act as a Na+ reservoir.
Classification
subjects
- Chemistry
- Industrial Engineering
- Materials science and engineering
keywords
- hybrid electrolyte; sodium battery; nasicon; ionic liquids