| abstract |
A safety type lithium ion battery including an anode layer having the bigger resistance. This lithium battery includes an electrode assembly, which has an anode and a cathode, wherein the anode includes a collector and an anode layer inhering on the surface of the collector and including active substance, and the active substance of the anode layer is graphite, and the resistance of the anode layer is at the range of 0.5Ω/cm2~10Ω/cm2. Because the resistance of the anode layer is bigger, the contact resistance is smaller when shorting, and the shorting current density is also relatively smaller. Accordingly, it is not happen that the temperature instantly raises and leads to fire, and it will improve the safety of the lithium ion battery. |