Niterra Patente

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This MOF material for shaping composed of a metal-organic framework (MOF) is localized on the surfaces of crystal particles forming the MOF and contains silicon (Si).

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A piezoelectric element 1 according to the present disclosure is a piezoelectric element 1 including multiple piezoelectric bodies 2, having piezoelectricity, and multiple electrodes stacked alternately. At least one of the piezoelectric bodies 2 has a slit 6 in its lateral surface. The outer periphery of a cross section of the portion of the piezoelectric element 1 having the slit 6 obtained by cutting in the direction perpendicular to the stacking direction has multiple sides 20 and multiple stress relaxation portions 30 each connecting an adjacent pair of the sides 20. The stress relaxation portions 30 are formed such that when each point at which extensions of an adjacent pair of the sides 20 intersect is defined as an imaginary vertex 22, the slit 6 is located closer to the center of the piezoelectric body 2 than the imaginary vertices 22.

To provide an electrolytic solution, an electrolyte composition, and electrochemical element, which can attain an enhanced transport number of ions involved in energy conversion. The electrolytic solution contains a non-aqueous solvent, and satisfies b*≥2 in the chromatic coordinates of CIE 1976L*a*b* color space. The electrolytic solution preferably satisfies 1≤L*≤3. Also, the electrolytic solution preferably has a chroma defined by c<*>={(a<*>)<2>+(b<*>)<2>}<1/2> of 2≤c<*>≤8. The electrolyte composition contains an electrolytic solution and particles of an oxide solid electrolyte. The electrochemical element has an electrode containing the electrolytic solution.

The lead-free piezoelectric composition includes a primary phase formed of an alkali niobate-based perovskite oxide, and a secondary phase containing a compound which has a tungsten bronze-type structure including niobium (Nb) and at least one species selected from among barium (Ba), calcium (Ca), strontium (Sr), sodium (Na), and potassium (K). The he secondary phase satisfies at least one condition among three conditions in relation to 80% cumulative frequency grain size (D80), 50% cumulative frequency grain size (D50), and 20% cumulative frequency grain size (D20), in a volume-based grain size distribution, represented by the following numerical expressions (1) to (3): 1.3 μm ≤ D 80 ≤ 218.6 μm <img class="EMIRef" id="aade9c85-29ee-47b7-8454-772c86e53033-ia01" /> 0.4 µm≤D50≤68.7 µm ··· (2), and 0.1 μm ≤ D 20 ≤ 22.2 μm <img class="EMIRef" id="aade9c85-29ee-47b7-8454-772c86e53033-ia02" />

Objects of the invention are to provide an electrolytic solution, an electrolyte composition, and electrochemical element, which can attain an enhanced transport number of ions involved in energy conversion. The electrolytic solution contains a non-aqueous solvent and exhibits a difference between a loss modulus at 25°C and a storage modulus at 25°C of 2,440 Pa or more and 6,720 Pa or less. The electrolytic solution preferably has a loss modulus of 5,400 Pa or higher, and a storage modulus of 0.34 Pa or lower. The electrolyte composition contains the electrolytic solution and particles of an oxide solid electrolyte. The electrochemical element has an electrode containing the electrolytic solution.

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The purpose of the present invention is to provide an electrode (11) and a power storage (10) capable of reducing charge transfer resistance. The electrode contains particles (20) of a solid electrolyte. The ratio of the particles is 0.1-30 vol%, and the average of the distance (D) between the particles in a range (18) in which six or more particles appear in a width of 400 µm² on the cross-section of the electrode is 1 µm or more. The average of the equivalent circle diameters of the particles appearing in the cross section is preferably 10 µm or less, and the average of the equivalent circle diameters of an active material (19) appearing in the cross section is preferably 5 µm or more. The power storage device includes the electrode.

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An ultrasonic transducer array (10) comprises: a plurality of units (20) each of which includes a piezoelectric element (21) and a vibration plate (22); a first electricity conducting path (30) electrically connected to each of the vibration plates (22) of the plurality of units (20); and a second electricity conducting path (40) electrically connected to each of electrodes (27) provided on second main faces (25) of the piezoelectric elements (21) of the plurality of units (20). The first electricity conducting path (30) includes an electricity conducting member (32) disposed on a side opposite the vibration plates (22) with the piezoelectric elements (21) intervening therebetween, and a plurality of first spring members (31) individually disposed between each of the plurality of vibration plates (22) and the electricity conducting member (32). A first end (31A) of each of the plurality of first spring members (31) is in contact with a corresponding one of the plurality of vibration plates (22), and a second end (31B) of each of the plurality of first spring members (31) is in contact with the electricity conducting member (32) in common.

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Provided is a novel coated substrate which can be applied to various fields and from which high functionality can be expected. The coated substrate is a coated substrate (1) in which a substrate (5) is coated with a film (3). The thickness of the film (3) is 60 nm or greater and 10 µm or less, measurement of the film (3) shows that the percentage of C (carbon) element is 0.1 atm% or greater and less than 20 atm%, and the sum of the percentage of a metal element and the percentage of O (oxygen) element is 70 atm% or greater, the film (3) is amorphous, and the relative density of the film (3) is 90% or greater.

Provided is a novel coated substrate (1) which is applicable to various fields and from which high functionality can be expected. In the coated substrate (1), a substrate (5) is coated with a film (3). The thickness of the film (3) is 60 nm or greater and 10 µm or less. Measurement of the film (3) shows that the percentage of C (carbon) element is 0.1 atm% or greater and less than 10 atm% and the sum of the percentage of a metal element and the percentage of O (oxygen) element is 80 atm% or greater. The relative density of the film (3) is 90% or greater, and the film (3) contains γ-Al₂O₃.

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