Li/LiFePO_4 battery performance with a guanidinium-based ionic liquid as the electrolyte

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 年，卷（期）: 2011,（27）
• 页码范围: 2906-2910
• 页数: 5页
• 分类号: TM912
• 语种: 中文

摘要

A new guanidinium-based ionic liquid (IL) was investigated as a novel electrolyte for a lithium rechargeable battery. The viscosity, conductivity, lithium redox behavior, and charge-discharge characteristics of the lithium rechargeable batteries were investigated for the IL electrolyte with 0.3 mol kg 1 lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt. Li/ LiFePO 4 cells incorporating the IL electrolyte without additives showed good cycle properties at a charge-discharge current rate of 0.1 C, and exhibited good rate capabilities in the presence of a mass fraction of 10% vinylene carbonate or gamma-butyrolactone.