| 摘要 |
PURPOSE:To provide a lithium secondary battery capable of cyclically discharged and charged and excellent in the cycle life. CONSTITUTION:A negative electrode 1 made of metal lithium is used in a lithium secondary battery D, and a layer 4 dispersed with fine grains of at least one kind of a material having Li storage capability and/or a material alloyable with lithium is dispersed on the surface of the negative electrode 1 faced to a positive electrode 2. A dispersion medium dispersed with fine grains is preferably coated on the surface of the negative electrode 1 to form the layer 4 dispersed with fine grains, or fine grains are dispersed on the surface of the negative electrode 1, then at least part of the fine grains are buried on the surface of the negative electrode 1 by a pressing means, and the thickness is set to 0.02-10mum. The lithium secondary battery D excellent in the charge/discharge cycle life and having high electromotive force and a high energy density is obtained. |
