Diagnosis of power fade mechanisms in high-power lithium-ion cells

Autor: Richard T. Haasch, Yoo Eup Hyung, N Elsen, Daniel P. Abraham, M.E. Stoll, Ernie Sammann, Chen Chen, G. L. Henriksen, Ray D. Twesten, Khalil Amine, Ivan Petrov, Scott MacLaren, Jun Liu
Rok vydání: 2003
Předmět:
Zdroj: Journal of Power Sources. :511-516
ISSN: 0378-7753
DOI: 10.1016/s0378-7753(03)00275-1
Popis: Hybrid electric vehicles (HEV) need long-lived high-power batteries as energy storage devices. Batteries based on lithium-ion technology can meet the high-power goals but have been unable to meet HEV calendar-life requirements. As part of the US Department of Energy’s Advanced Technology Development (ATD) Program, diagnostic studies are being conducted on 18650-type lithium-ion cells that were subjected to accelerated aging tests at temperatures ranging from 40 to 70 °C. This article summarizes data obtained by gas chromatography, liquid chromatography, electron microscopy, X-ray spectroscopy and electrochemical techniques, and identifies cell components that are responsible for the observed impedance rise and power fade.
Databáze: OpenAIRE