Premium
Green Polymer Electrolytes Based on Polycaprolactones for Solid‐State High‐Voltage Lithium Metal Batteries
Author(s) -
Chen YiHsuan,
Hsieh YiChen,
Liu Kun Ling,
Wichmann Lennart,
Thienenkamp Johannes Helmut,
Choudhary Aditya,
Bedrov Dmitry,
Winter Martin,
Brunklaus Gunther
Publication year - 2022
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.202200335
Subject(s) - electrolyte , materials science , lithium metal , lithium (medication) , cathode , polymer , chemical engineering , fast ion conductor , quasi solid , electrode , composite number , nanotechnology , composite material , chemistry , medicine , dye sensitized solar cell , engineering , endocrinology
Solid polymer electrolytes (SPEs) have attracted considerable attention for high energy solid‐state lithium metal batteries (LMBs). In this work, potentially ecofriendly, solid‐state poly( ε ‐caprolactone) (PCL)‐based star polymer electrolytes with cross‐linked structures (xBt‐PCL) are introduced that robustly cycle against LiNi 0.6 Mn 0.2 Co 0.2 O 2 (NMC622) composite cathodes, affording long‐term stability even at higher current densities. Their superior features allow for sufficient suppression of dendritic lithium deposits, as monitored by 7 Li solid‐state NMR. Advantageous electrolyte|electrode interfacial properties derived from cathode impregnation with 1.5 wt% PCL enable decent cell performance until up to 500 cycles at rates of 1C (60 °C), illustrating the high potential of PCL‐based SPEs for application in high‐voltage LMBs.