Open AccessCommunication—Lithium Sulfonated Polyoxadiazole as a Novel Single-Ion Polymer Electrolyte in Lithium-Ion Batteries
Author(s) -
Haixia Gao,
Jianzhao Mao,
Dazhe Li,
Yuanyuan Yu,
Chen Yang,
Shikai Qi,
Qianli Liu,
Jiadeng Zhu,
Mengjin Jiang
Publication year - 2020
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ab6e5c
Subject(s) - electrolyte , lithium (medication) , materials science , ionic conductivity , electrochemistry , thermal stability , faraday efficiency , polymer , ion , conductivity , isophthalic acid , current density , chemical engineering , polymer chemistry , inorganic chemistry , chemistry , electrode , composite material , organic chemistry , medicine , physics , quantum mechanics , polyester , engineering , terephthalic acid , endocrinology
A single-ion conductor polymer electrolyte was prepared and the effects of the ratio of isophthalic acid (IPA) to 4, 4’-diphenyl ether dicarboxylic acid (DPE) on the structure and electrochemical properties have been investigated. Results show that all the lithium sulfonated polyoxadiazoles (Li-SPODs) have excellent thermal stability (510 °C). The ionic conductivity of the Li-SPOD is 7.2 × 10 −4 S cm −1 at room temperature when the IPA/DPE ratio is 6/4. A high Coulombic efficiency of 99.1% for the LiFePO 4 /6/4 li-SPOD SPEs/Li half-cell could be achieved with a capacity retention of 90.63% at a current density of 0.1 C after 25 cycles.