| 摘要 |
This invention provides an all solid polymer battery comprising 1) a lithium negative electrode active material containing crystal grains and crystal grain boundaries, at least a part of the crystal grain boundaries being exposed on the lithium negative electrode active material, the exposed area of the crystal grain boundaries being 0.02 to 0.5 cm per cm of the surface, 2) a dry polymer electrolyte containing a specific ethylene glycol ether, a polymer containing an electron donating oxygen atom in its skeleton and a lithium salt, or 3) a noncrystalline lithium nitride layer provided between a negative electrode and a polymer electrolyte. This constitution can provide an all solid polymer battery which can realize reduced resistance of the interface of the negative electrode and the polymer electrolyte and has a high capacitance and excellent cycle properties. Further, the all solid polymer battery can realize the suppression of an increase in internal resistance during storage and is excellent in high rate discharge properties after storage. |
