Abstract: A solid oxide fuel cell includes a support of which a main component is a metal, and an anode supported by the support, wherein the anode includes a first oxide having electron conductivity, wherein the first oxide is perovskite type oxide expressed as a composition formula ABO3, wherein “A” of the composition formula includes at least one of Ca, Sr, Ba and La, wherein “B” of the composition formula includes at least Cr.

Abstract: A multilayer ceramic electronic device includes a multilayer structure that has a side margin that is provided so as to cover ends of internal electrode layers extending toward two side faces and has a thickness of 10 ?m or more and 70 ?m or less, wherein with reference to a first straight line drawn from a tip on a side of the side margin in an opposing direction in which the two side faces oppose each other, a distance between the tip and one of a first position where the thickness to a surface on one side in a thickness direction first reaches a maximum value from the tip and a second position where the thickness to a surface on the other side first reaches a maximum value from the tip which is located closer to the tip in the opposing direction is 15 ?m or less.

Abstract: An all solid battery includes: an oxide-based solid electrolyte layer; a first electrode provided on a first main face of the solid electrolyte layer; a second electrode provided on a second main face of the solid electrolyte layer, wherein the solid electrolyte layer is a sintered structure of solid electrolyte powder, wherein the solid electrolyte powder has D10% diameter of 0.05 ?m or more and 0.6 ?m or less, D50% diameter of 0.08 ?m or more and 1.5 ?m or less, D90% diameter of 4 ?m or less, and a BET value of 3 m2/g or more and 20 m2/g or less.

Abstract: A fuel cell includes: a solid oxide electrolyte layer having oxygen ion conductivity; a first electrode layer that is provided on a first face of the solid oxide electrolyte layer; and a second electrode layer that is provided on a second face of the solid oxide electrolyte layer, wherein a main component of a material having oxygen ion conductivity and a main component of a material having electron conductivity are common with each other between the first electrode layer and the second electrode layer.

Abstract: An all solid battery includes: a solid electrolyte layer of which a main component is oxide-based solid electrolyte; a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material; and a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material, wherein at least one of the first electrode layer and the second electrode layer includes an aggregate of carbon particles and a cavity, wherein the aggregate demarcates at least a part of the cavity.

Abstract: An all-solid battery includes: a multilayer structure that includes a plurality of first electrodes and a plurality of second electrodes, and has a first side face and a second side face adjacent to each other, the plurality of first electrodes and the plurality of second electrodes being alternately stacked with solid electrolyte layers interposed between the plurality of first electrodes and the plurality of second electrodes; a first extraction part exposed on the first side face, the first extraction part being a part of the first electrode; a second extraction part exposed on the second side face, the second extraction part being a part of the second electrode; a first external electrode coupled to the first extraction part on the first side face; and a second external electrode coupled to the second extraction part on the second side face.

Abstract: An all solid battery includes a multilayer body in which each of a plurality of electrode layers and each of a plurality of solid electrolyte layers are alternately stacked, wherein at least one of the plurality of electrode layers includes an end portion, a first portion in which a film thickness thereof increases at a first increase rate of 0.15 or more from the end portion to a first point, and a second portion in which the film thickness increases at a second increase rate of 0.1 or less from the first point to a second point, wherein the film thickness of the at least one of the plurality of electrode layers at the second point is a local maximum thickness and is 1.5 times or less as an average film thickness of the at least one of the plurality of electrode layers.

Abstract: An all-solid battery includes: a solid electrolyte layer mainly composed of oxide-based solid electrolyte; a first electrode layer formed on a first principal face of the solid electrolyte layer, the first electrode layer containing an active material; a second electrode layer formed on a second principal face of the solid electrolyte layer, the second electrode layer containing another active material, wherein no collector layer that is in contact with the second electrode layer is provided in a direction in which the solid electrolyte layer, the first electrode layer, and the second electrode layer are stacked, and the second electrode layer includes board-shaped carbon.

Abstract: An all solid battery includes a solid electrolyte layer, and electrode layers that are provided on both main faces of the solid electrolyte layer and include an electrode active material and a fibrous conductive auxiliary agent. In cross sections of the electrode layers, an average diameter of the conductive auxiliary agent is 2 nm or more and 150 nm or less, an area ratio occupied by the conductive auxiliary agent is 0.5% or more and 5.0% or less, and an area ratio occupied by the electrode active material is 28% or more and less than 80%. A thickness of the solid electrolyte layer is 5 ?m or more and 20 ?m or less.

Abstract: An all solid battery includes a solid electrolyte layer, a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an electrode active material, and a second electrode layer that is provided on a second main face of the solid electrode layer and includes an electrode active material. when the all solid battery is heated with an increase rate of 20° C./min, CO2 of 30 mg/cm3 or more and 53 mg/cm3 or less is externally generated from the all solid battery from 550° C. to 700° C. and CO2 of 90 mg/cm3 or more and 155 mg/cm3 or less is externally generated from the all solid battery from 550° C. to 750° C., per a unit volume (cm3) of the all solid battery.

Abstract: An all solid battery includes: a solid electrolyte layer including a glass component, a main component of the solid electrolyte layer being phosphoric acid salt-based solid electrolyte; and electrode layers that are provided on both main faces of the solid electrolyte layer, wherein the electrode layers include a carbon material having an average particle diameter of 40 nm or more and 120 nm or less, wherein a DBP oil absorption of the carbon material is 200 mL/100 g or less.

Abstract: An all solid battery includes: a solid electrolyte layer; a positive electrode layer provided on a first face of the solid electrolyte layer, a part of the positive electrode layer extending to a first edge portion of the solid electrolyte layer; a first margin layer that is provided on an area of the solid electrolyte layer where the positive electrode is not provided; a negative electrolyte layer provided on a second face of the solid electrolyte layer, a part of the negative electrolyte layer extending to a second edge portion of the solid electrolyte layer; a second margin layer that is provided on an area of the second face of the solid electrolyte layer where the negative electrolyte layer is not provided; wherein a main component of the first margin layer and the second margin layer is solid electrolyte of which ionic conductivity is lower than that of the solid electrolyte layer.

Abstract: A solid oxide fuel cell includes: a support layer mainly composed of a metal; an anode supported by the support; and a mixed layer interposed between the support and the anode, wherein the anode includes an electrode bone structure composed of a ceramic material containing a first oxide having electron conductivity and a second oxide having oxygen ion conductivity, and the mixed layer has a structure in which a metallic material and a ceramic material are mixed.

Abstract: An all solid battery includes: a multilayer chip in which each of solid electrolyte layers and each of electrodes are alternately stacked, a main component of the solid electrolyte layers being phosphoric acid salt-based solid electrolyte, the plurality of electrodes being alternately exposed to a first end face and a second end face of the multilayer chip, a first external electrode provided on the first end face; a second external electrode provided on the second end face; and wherein L/W is 0.2 or more and 1.1 or less, when a length of the multilayer chip in a first direction in which the first end face faces with the second end face is L, and a width of the multilayer chip in a second direction that is vertical to the first direction and a stacking direction of the multilayer chip is W.

Abstract: A manufacturing method of ceramic powder includes mixing a barium carbonate having a specific surface are of 15 m2/g or more, a titanium dioxide having a specific surface area of 20 m2/g or more, a first compound of a donor element having a larger valence than Ti, and a second compound of an acceptor element having a smaller valence than Ti and having a larger ion radium than Ti and the donor element, and synthesizing barium titanate powder by calcining the barium carbonate, the titanium dioxide, the first compound and the second compound until a specific surface area of the barium titanate powder becomes 4 m2/g or more and 25 m2/g or less.

Abstract: The solid oxide fuel cell includes a support of which a main component is a metal, an anode layer that is supported by the support, an electrolyte layer of solid oxide that is provided on the anode layer and has oxygen ion conductivity, a cathode layer that is provided on the electrolyte layer; and a porous layer of a metal that covers the cathode layer and a part of the electrolyte layer around the cathode.

Abstract: An all solid battery includes a solid electrolyte layer, a first electrode structure that has a structure in which a first electric collector layer of which a main component is a conductive material is sandwiched by two first electrode layers including an active material, and a second electrode structure that has a structure in which a second electric collector layer of which a main component is a conductive material is sandwiched by two second electrode layers including an active material. Roughness of interfaces between the first electric collector layer and the two first electrode layers and/or roughness of interfaces between the second electric collector layer and the two second electrode layers is larger than roughness of interfaces between the solid electrolyte layer, and the first electrode layer and the second electrode layer sandwiching the solid electrolyte layer.

Abstract: An all-solid-state battery includes a pair of electrode layers consisting of first and second electrode layers, and a solid-state electrolyte layer positioned between the pair of electrode layers, wherein the first electrode layer contains an electrode active material having an olivine-type crystalline structure, the solid-state electrolyte layer contains a solid-state electrolyte having a NASICON-type crystalline structure, and the solid-state electrolyte layer in the vicinity of the first electrode layer is expressed by a composition formula LixAyCozM?aM?bP3Oc. The all-solid-state battery can improve the long-term cycle stability.

Abstract: An all solid battery includes a solid electrolyte layer of which a main component is a Li—Al-M-PO4-based phosphoric acid salt, a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material, and a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material. “M” is at least one of Ge, Ti, and Zr. A region in which a ratio of MO2 with respect to Li—Al-M-PO4 is 5% or more is unevenly distributed from a center in a thickness of the solid electrolyte layer to 0.4 A downward and to 0.4 A upward, when the thickness of the solid electrolyte layer is expressed by “A”.

Abstract: A fuel cell stack includes: a first fuel cell and a second fuel cell, each of which has a structure in which a solid oxide electrolyte layer having oxygen ion conductivity is provided between two electrode layers; and an interconnector that is provided between the first fuel cell and the second fuel cell and has a separator made of a metal material, wherein the interconnector has a first metal porous part and a first gas passage on a first face of the separator on a side of the first fuel cell, wherein the interconnector has a second metal porous part and a second gas passage on a second face of the separator on a side of the second fuel cell.