LITHIUM BATTERIES - APPLICATION OF NEUTRON RADIOGRAPHY

Several kinds of primary and secondary commercial lithium batteries, s uch as CR1/3.1H (Fujitsu), CR1220 and BR435 (Panasonic), ML1220 (Sanyo Excel) were investigated using neutron radiography; the variation of the lithium distribution inside these batteries upon discharging (and charging) were clarified by analyzing their visualized images. It was demonstrated that neutron radiography is a potential and useful method , especially in evaluating the reversibility of rechargeable batteries , which have been used under different discharging/ charging condition s. (C) 1997 Elsevier Science S.A.