CAPACITOR

• Main Authors: ICHIYANAGI SEIJI, NAKAYA HIROTO, YAMAMOTO HIROSHI, TSURUMI TAKAAKI, IWASAKI MASATAKA
• Format: Patent
• Language: English; Japanese
• Published: 15.03.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

PROBLEM TO BE SOLVED: To provide a capacitor which enables the reduction in dielectric loss in a low-frequency region.SOLUTION: A capacitor 1 comprises: a base 21 having a pair of principal faces 21a, 21b and arranged by laminating three solid electrolyte layers 3, 11, 19 which are made of a solid electrolyte (e.g. LLZ) having lithium ion conductivity; and a pair of internal electrode layers 9, 17 disposed in the base 21 so as to opposed to each other through the solid electrolyte layer 3, 11, 19. In the capacitor 1, mixture layers 7, 15 including a metal and the solid electrolyte are disposed on opposing faces of the pair of internal electrode layers 9, 17, which are opposed to each other through the central solid electrolyte layer 3. The first and second outside solid electrolyte layers 11, 19 are put in direct contact with surfaces on opposite sides to the opposing faces (i.e. surfaces on respective external face sides) in the first and second internal electrode layers 9, 17, disposed closest to the pair of principal faces 21a, 21b, respectively.SELECTED DRAWING: Figure 2 【課題】低周波数領域における誘電損失を低減できるキャパシタを提供すること。【解決手段】キャパシタ１は、リチウムイオン伝導性を有する固体電解質（例えばＬＬＺ）からなる３層の固体電解質層３、１１、１９が積層されてなる一対の主面２１ａ、２１ｂを有する基体２１と、基体２１の内部において、固体電解質層３、１１、１９を介して対向するように配置された一対の内部電極層９、１７とを備えている。このキャパシタ１では、一対の内部電極層９、１７のうち中央固体電解質層３を介して互いが対向する対向面に、金属と固体電解質とを含む混合層７、１５が配置されている。また、最も一対の主面２１ａ、２１ｂ寄りに配置された第１、第２内部電極層９、１７における対向面と反対側の表面（即ち外面側の表面）に、それぞれ第１、第２外側固体電解質層１１、１９が直接接触している。【選択図】図２