ALL-SOLID BATTERY

To provide an all-solid battery that can suppress reduction of capacity.SOLUTION: An all-solid battery includes a lamination chip which has a substantially rectangular shape, and is formed so that a solid electrolyte layer containing phosphate-based solid electrolytes as a main component and electrodes are alternately laminated and the plurality of electrodes laminated on the two opposite end faces are alternately exposed, a pair of external electrodes provided on the two end faces. A pair of cover layers are provided between two faces facing each other in the lamination direction of the solid electrolyte layers and the electrodes among the four faces other than the two end faces of the lamination chip, and a battery reaction region in which two adjacent electrodes exposed to different end faces face each other through the solid electrolyte layer. Between the pair of cover layers and the battery reaction region, a dummy electrode which includes an electrode active material and does not cause a battery reaction with the electrode of the outermost electrode of the battery reaction region is provided through the solid electrolyte layer between the dummy electrode and the battery reaction region.SELECTED DRAWING: Figure 2 【課題】 容量低下を抑制できる全固体電池を提供する。【解決手段】 全固体電池は、リン酸塩系の固体電解質を主成分とする固体電解質層と、電極と、が交互に積層され、対向する２端面に積層された複数の前記電極が交互に露出するように形成され、略直方体形状を有する積層チップと、前記２端面に設けられた１対の外部電極と、を備え、前記積層チップの前記２端面以外の４面のうち前記固体電解質層と前記電極との積層方向において対向する２面と、異なる端面に露出する２つの隣接する電極同士が前記固体電解質層を介して対向する電池反応領域と、の間には、１対のカバー層が設けられ、前記１対のカバー層と前記電池反応領域との間には、電極活物質を含み、前記電池反応領域の最外層の電極と電池反応を生じないダミー電極が、前記電池反応領域との間に前記固体電解質層を介して設けられている。【選択図】 図２