Premium
Low‐Operating Temperature, High‐Rate and Durable Solid‐State Sodium‐Ion Battery Based on Polymer Electrolyte and Prussian Blue Cathode
Author(s) -
Du Guangyuan,
Tao Mengli,
Li Jie,
Yang Tingting,
Gao Wei,
Deng Jianhua,
Qi Yuruo,
Bao ShuJuan,
Xu Maowen
Publication year - 2020
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201903351
Subject(s) - prussian blue , materials science , electrolyte , membrane , cathode , battery (electricity) , polymer , chemical engineering , ionic conductivity , fast ion conductor , thermal stability , electrochemistry , composite material , electrode , chemistry , power (physics) , physics , quantum mechanics , engineering , biochemistry
A solid‐state polymer electrolyte (PFSA‐Na membrane) for solid‐state sodium‐ion batteries (SSIBs) to overcome severe safety issues caused by traditional liquid electrolytes is explored. The PFSA‐Na membranes, synthesized by an environmentally and economically friendly method, display high ionic conductivity, excellent thermal stability, and outstanding mechanical flexibility in a wide temperature range. SSIBs based on the PFSA‐Na membranes and Prussian blue cathode exhibit a superior rate performance of 87.5 mA h g −1 at 8 C and a durable cycling life of up to 1100 cycles at 1 C with only a slight capacity decay of ≈0.014% per cycle. Furthermore, due to the intrinsic advantages of the PFSA‐Na membranes, the cyclic performance of the proposed SSIBs is more stable than that of its liquid counterpart even at the rather low temperature of −35 °C.