TY - JOUR
T1 - Revealing the Anion Chemistry Effect on Transport Properties of Ternary Gel Polymer Electrolytes
AU - Martinez-Ibañez, Maria
AU - Boaretto, Nicola
AU - Meabe, Leire
AU - Wang, Xiaoen
AU - Zhu, Haijin
AU - Santiago, Alexander
AU - Zugazua, Oihane
AU - Forsyth, Maria
AU - Armand, Michel
AU - Zhang, Heng
N1 - Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022/8/23
Y1 - 2022/8/23
N2 - Gel polymer electrolytes (GPEs) are promising candidates to enable safe and room temperature lithium metal (Li°) polymer batteries (LMPBs). Among the different available plasticizers, ionic liquids (ILs) have captured much interest due to their extremely low vapor pressure and high chemical, thermal, and electrochemical stability. Plasticizing polymerized ionic liquid (PIL)-based electrolytes with ILs may lead to intrinsically safe and highly ionically conductive GPEs even at low temperature. Herein, we report the fundamental properties of some representative PIL-based GPEs utilizing sulfonimide anions ([N(SO2RF1)(SO2RF2)]- RF1, RF2 = F or CF3), with the goal to provide a detailed understanding of the diffusion and conduction properties of this intriguing electrolyte family when different anions are involved. Our results suggest that the full bis(fluorosulfonyl)imide (FSI)-based system exhibits higher ionic conductivities and better selectivity in cationic transport as compared to other systems, due to the higher mobility of free ions and the lower content in ion aggregates. It is anticipated that the present work may set the course to design new GPEs rendering an overall improved electrochemical performance.
AB - Gel polymer electrolytes (GPEs) are promising candidates to enable safe and room temperature lithium metal (Li°) polymer batteries (LMPBs). Among the different available plasticizers, ionic liquids (ILs) have captured much interest due to their extremely low vapor pressure and high chemical, thermal, and electrochemical stability. Plasticizing polymerized ionic liquid (PIL)-based electrolytes with ILs may lead to intrinsically safe and highly ionically conductive GPEs even at low temperature. Herein, we report the fundamental properties of some representative PIL-based GPEs utilizing sulfonimide anions ([N(SO2RF1)(SO2RF2)]- RF1, RF2 = F or CF3), with the goal to provide a detailed understanding of the diffusion and conduction properties of this intriguing electrolyte family when different anions are involved. Our results suggest that the full bis(fluorosulfonyl)imide (FSI)-based system exhibits higher ionic conductivities and better selectivity in cationic transport as compared to other systems, due to the higher mobility of free ions and the lower content in ion aggregates. It is anticipated that the present work may set the course to design new GPEs rendering an overall improved electrochemical performance.
UR - http://www.scopus.com/inward/record.url?scp=85136637438&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.2c00260
DO - 10.1021/acs.chemmater.2c00260
M3 - 文章
AN - SCOPUS:85136637438
SN - 0897-4756
VL - 34
SP - 7493
EP - 7502
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 16
ER -