High performance plastic lithium-ion battery cells for hybrid vehicles

• Published in: Journal of power sources Vol. 104; no. 1; pp. 1 - 6
• Main Authors: Lackner, Anna M., Sherman, Elena, Braatz, Paul O., David Margerum, J.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 15.01.2002; Elsevier Sequoia
• Subjects: Applied sciences; Batteries; Calendar life; Cycle life; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Hybrid vehicles; hybrids; Plastic lithium-ion cells; Pulse power capability; Q1; Calendar life; Hybrid vehicles; Cycle life; Plastic lithium-ion cells; Pulse power capability; Performance evaluation; Operating time; Hybrid vehicle; Lithium; Secondary cell; Electric vehicle; Electric batteries; Discharge charge cycle; Energetic efficiency; Automobile industry; Composite electrode; Specific capacity; Electrical characteristic
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/S0378-7753(01)00816-3

Exploratory studies on small plastic lithium-ion battery test cells with improved cathode material show high pulse power capability and outstanding stability both in a 25 °C pulse cycling test and in a 55 °C calendar life test. Typical discharge pulse power values are 60 mW/cm 2. After 50,000 pulse cycles at 5 C rates, cells at 25 °C retain 100% of their initial 1 C capacity and 75% of their pulse power capability. After 60 days at 55 °C, cells measured at 25 °C retain 98% of their initial 1 C capacity and 70% of their pulse power capability. This performance is an excellent basis for the development of long life batteries for hybrid vehicles, as shown by a calculated scale up to a 30 kW hybrid battery for a “Fast Response Engine”.