Electrochemical performance of lithium polymer battery based on PC/Polymer borate ester plasticizers

Abstract

The electrochemical performance of a lithium polymer battery based on a novel gel polymer electrolyte and a substituted spinel cathode was investigated. Propylene carbonate (PC) and polyethylene glycol)-borate ester (PEG-BE) were used as plasticizers in the polymer electrolyte composed of poly (ethylene glycol) methacrylates (PEG-Ms) and LiClO4. The electrolyte exhibited satisfactory thermal, mechanical, and electrochemical stability. The Li/PC/PEG-BE based polymer electrolyte/LiMn1.8Co0.2O 4 cell generated a reasonable steady capacity at room temperature and a substantial rate capability at 65°C. © 2004 The Electrochemical Society. All rights reserved.