Carbon-coated fluorinated graphite for high energy and high power densitiesprimary lithium batteries

摘要

The electrochemical performances of fluorinated graphite have been improved bycoating a uniform carbon layer on commercial CFx (x = 1) powder used as cathodematerial in lithium battery. In comparison with the cell using un-coated CFx ascathode, the cell using carbon coated CFx cathode has a higher energy densityand higher power density, particularly at higher discharge current rates (1Cabove). This is because the conductive carbon coating provides the exteriorconnectivity between particles for facile electron conduciton, resulting in highrate performance.