| 摘要 |
A lithium secondary battery includes a positive electrode, a negative electrode, a separator, an internal electrode body, and an organic electrolyte. The positive electrode and the negative electrode are wound through the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. A total thickness ( mu m) of electrode substrates is divided by a total thickness ( mu m) of electrode active material layers, and the resultant ratio is a total thickness ratio, which total thickness ratio has been set to be not less than 0.045 and not more than 0.31. The lithium secondary battery reduces internal resistance to attain good charging-discharging characteristics and to obtain an high output and a huge current. <IMAGE> |
