Premium
Combining Ionic Liquids and Sodium Salts into Metal‐Organic Framework for High‐Performance Ionic Conduction
Author(s) -
Xu Qiuxia,
Yang Fan,
Zhang Xiangping,
Li JianRong,
Chen JianFeng,
Zhang Suojiang
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901753
Subject(s) - ionic conductivity , ionic liquid , ionic bonding , materials science , conductivity , sodium , ion , inorganic chemistry , electrical conductor , chemical engineering , chemistry , composite material , electrode , organic chemistry , electrolyte , metallurgy , catalysis , engineering
Developing stable conductive materials with high conductivity for sodium ion (Na + ) batteries attracts ever‐increasing attention. In this work, MOF‐based solid Na + ‐conducting composites functionalized by ionic liquids (ILs) were explored through introducing five kinds of ILs and their corresponding sodium salts into the pores of MIL‐101‐SO 3 Na. The pore‐filling fraction of MIL‐101‐SO 3 Na was established and revealed as a key factor to enhance the ionic conductivity of the composites. Na‐salts could further improved the conductivity by increasing the number of conductive ions. Furthermore, all ILs and Na‐salts@MIL‐101‐SO 3 Na hybrid composites showed sharply enhanced ionic conductivity and displayed low activation energy. Particularly, as the pore‐filling faction elevating to 96.94 % with [Emim][BF 4 ] and NaBF 4 in the pores of MIL‐101‐SO 3 Na the ionic conductivity reached up to 1.32×10 −2 S cm −1 and stabilized within 30 days at 150 °C. This study on Na + ‐conduction in a MOF‐based system functionalized by ILs, providing guidance for exploring new solid ionic conducting materials.