A lithium secondary battery comprising a positive electrode, a negative
electrode, and a nonaqueous electrolyte, wherein the positive electrode
or the negative electrode is an electrode obtained by depositing a thin
film of active material capable of lithium storage and release on a
current collector, the thin film is divided into columns by gaps formed
therein in a manner to extend in its thickness direction and the columnar
portions are adhered at their bottoms to the current collector, and the
nonaqueous electrolyte contains at least one selected from phosphate
ester, phosphite ester, borate ester and carboxylic ester having a
fluoroalkyl group.