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公开(公告)号：US20240218534A1
公开(公告)日：2024-07-04
申请号：US18488425
申请日：2023-10-17
申请人： HITACHI, LTD.
IPC分类号： C25B9/50 , C25B9/19 , C25B11/052 , C25B15/08
CPC分类号： C25B9/50 , C25B9/19 , C25B11/052 , C25B15/08
摘要： A photocatalytic apparatus is provided that uses a photovoltaic action for both electrodes and conjugates a photocatalytic action with the photovoltaic action to efficiently perform material transformation on the basis of a redox reaction on the electrodes using light energy. A photocatalytic apparatus includes a first electrode functioning as an anode and a second electrode functioning as a cathode. The first electrode includes a first transparent conductive substrate having light transmittivity and electrical conductivity, a first light power generation layer that is disposed on the first transparent conductive substrate and absorbs light to generate electrons and holes, and a photocatalytic layer that is disposed on the first light power generation layer and catalyzes an oxidation reaction when being irradiated with light. The second electrode includes a second transparent conductive substrate having light transmittivity and electrical conductivity, a second light power generation layer that is disposed on the second transparent conductive substrate and absorbs light to generate electrons and holes, and a catalytic layer that is disposed on the second light power generation layer and catalyzes a reduction reaction.
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公开(公告)号：US20170069811A1
公开(公告)日：2017-03-09
申请号：US15252825
申请日：2016-08-31
申请人： HITACHI, LTD.
发明人： Yosuke KUROSAKI , Shin YABUUCHI , Jun HAYAKAWA
摘要： The present invention provides a thermoelectric conversion material that has low thermal conductivity and that is stable at a high temperature, and a thermoelectric conversion module using the same. The thermoelectric conversion material includes a granular base material including a semiconductor, a fine particle with a guest material distributed in the granular base material, and a binder with the guest material on a grain boundary of the granular base material. An amount of the binder is equal to or smaller than an amount of the fine particle, an amount of the granular base material is larger than a total amount of the binder and the fine particle, and the semiconductor and the guest material are in an isolated state not forming a compound by a eutectic reaction, a eutectoid reaction, a peritectic reaction, a peritectoid reaction, a monotectic reaction, or a segregation reaction.
摘要翻译： 本发明提供一种具有低导热性并且在高温下稳定的热电转换材料和使用该热电转换材料的热电转换模块。 热电转换材料包括：颗粒状基体材料，包括半导体，具有分散在颗粒状基材中的客体材料的细颗粒，以及在颗粒状基材的晶界处具有客体材料的粘合剂。 粘合剂的量等于或小于微粒的量，颗粒状基材的量大于粘合剂和细颗粒的总量，并且半导体和客体材料是分离的 状态不是通过共晶反应，共析反应，包晶反应，peritectic反应，单相反应或偏析反应形成化合物。
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公开(公告)号：US20150357543A1
公开(公告)日：2015-12-10
申请号：US14761414
申请日：2013-01-31
申请人： HITACHI, LTD.
发明人： Shin YABUUCHI , Jun HAYAKAWA , Yosuke KUROSAKI , Akinori NISHIDE , Yuji SUWA
摘要： In order to provide a thermoelectric conversion element which has a high Seebeck coefficient, a low thermal conductivity, and a high performance, even if the material system that has a low environmental load and can reduce the cost is used, the thermoelectric conversion element in which lattice points are classified into two or more kinds (A site and B site), lattices of which the kinds are different are connected to each other, the numbers of lattices of which the kinds are different are different (A site: 2, and B site: 1), and a lattice structure is configured by arranging nanoparticles or semiconductor quantum dots, includes areas of which conductivity types are different.
摘要翻译： 为了提供具有高塞贝克系数，低导热性和高性能的热电转换元件，即使使用具有低环境负荷并且可以降低成本的材料系统，也可以使用热电转换元件，其中 格点分为两种或更多种（A位点和B位点），各种不同的晶格彼此连接，各种不同的晶格数不同（A位点：2和B 位置：1），并且格子结构通过布置纳米颗粒或半导体量子点来构成，包括导电类型不同的区域。
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公开(公告)号：US20240139723A1
公开(公告)日：2024-05-02
申请号：US18485656
申请日：2023-10-12
申请人： Hitachi, Ltd.
IPC分类号： B01J35/00 , B01J7/00 , B01J21/02 , B01J21/06 , B01J23/02 , B01J23/10 , B01J23/20 , B01J23/22 , B01J23/30 , B01J23/42 , B01J23/46 , B01J23/50 , B01J23/58 , B01J23/60 , B01J23/648 , B01J23/68 , B01J23/75 , B01J23/755 , B01J27/04 , B01J27/14 , B01J27/198 , B01J27/24 , C01B3/04 , C01B13/02
CPC分类号： B01J35/004 , B01J7/00 , B01J21/02 , B01J21/063 , B01J23/02 , B01J23/10 , B01J23/20 , B01J23/22 , B01J23/30 , B01J23/42 , B01J23/462 , B01J23/464 , B01J23/468 , B01J23/50 , B01J23/58 , B01J23/60 , B01J23/6482 , B01J23/681 , B01J23/75 , B01J23/755 , B01J27/04 , B01J27/14 , B01J27/198 , B01J27/24 , C01B3/045 , C01B13/0207
摘要： To provide a photocatalyst decomposition apparatus that can supply a liquid phase containing a substance to be decomposed by a photocatalyst and that can perform decomposition of the substance more efficiently than in the related art. A photocatalyst decomposition system according to the invention includes: a gas phase generation apparatus configured to convert a liquid phase containing a decomposition object into a gas phase; and a photocatalyst member configured to come into contact with the gas phase to decompose the decomposition object by light from a light source. The photocatalyst member includes a base material formed of a porous material and a photocatalyst layer provided on a surface of the base material.
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公开(公告)号：US20180331272A1
公开(公告)日：2018-11-15
申请号：US15914500
申请日：2018-03-07
申请人： Hitachi, Ltd.
发明人： Yosuke KUROSAKI , Shin YABUUCHI , Jyun HAYAKAWA
摘要： A thermoelectric conversion material includes a matrix phase configured from a semiconductor. A first grain-boundary phase and a second grain-boundary phase are provided at a grain boundary of the matrix phase. The first grain-boundary phase is configured from a material which does not form a compound with the matrix phase by a eutectic reaction, a eutectoid reaction, a peritectic reaction, a peritectoid reaction, an eccentric reaction, or a segregation reaction. The second grain-boundary phase is configured from a material having resistance which is lower than that of the matrix phase or the first grain-boundary phase. A ratio of a volume of the second grain-boundary phase to a volume of the first grain-boundary phase is smaller than 1.
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6.发明申请THERMOELECTRIC CONVERSION MATERIAL, THERMOELECTRIC CONVERSION DEVICE, AND THERMOELECTRIC CONVERSION MODULE 审中-公开热电转换材料，热电转换装置和热电转换模块公开(公告)号：US20130263907A1
公开(公告)日：2013-10-10
申请号：US13802871
申请日：2013-03-14
申请人： HITACHI, LTD.
CPC分类号： H01L35/16 , C01G49/009 , C01P2002/30 , C01P2002/77 , C01P2006/40 , H01L35/04
摘要： Provided is a p-type thermoelectric conversion material achieving a low environment load and low costs and having high efficiency. A thermoelectric conversion device is constituted by raw materials existing in a great amount in nature by using Fe and S as main components. Further, since FeS2 of a pyrite structure has a d orbit derived from Fe in a valence band and a high state density, high performance as the thermoelectric conversion device is implemented by adding an addition element to this material system to express a p-type semiconductor characteristic.
摘要翻译： 提供一种实现低环境负荷且成本低且效率高的p型热电转换材料。 热电转换装置由以Fe和S为主要成分的大量原料存在。 此外，由于黄铁矿结构的FeS 2具有价带和高状态密度的衍生自Fe的轨道，因此通过在该材料体系中添加添加元素来表现p型半导体特性来实现作为热电转换元件的高性能 。
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公开(公告)号：US20230094287A1
公开(公告)日：2023-03-30
申请号：US17682046
申请日：2022-02-28
申请人： Hitachi, Ltd.
摘要： A hydrogen production apparatus including a photocatalyst and generating hydrogen from water includes a wavelength separation unit separating sunlight by wavelength, an infrared light conversion unit converting infrared light separated by the wavelength separation unit to visible light, and an ultraviolet light conversion unit converting ultraviolet light separated by the wavelength separation unit to visible light.
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公开(公告)号：US20200328336A1
公开(公告)日：2020-10-15
申请号：US16843454
申请日：2020-04-08
申请人： Hitachi, Ltd.
发明人： Yosuke KUROSAKI , Shin YABUUCHI , Jun HAYAKAWA , Yuzuru MIYAZAKI , Tomohisa TAKAMATSU , Kei HAYASHI
摘要： The present invention improves the performance of a thermoelectric conversion material and a thermoelectric conversion module. A thermoelectric conversion material has a mother phase containing a chimney ladder type compound comprising a first element of groups 4 to 9 and a second element of groups 13 to 15 and an additive phase existing at a grain boundary of the mother phase, the mother phase contains a third element to change a lattice constant of the chimney ladder type compound, and the additive phase contains the second element.
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公开(公告)号：US20180026171A1
公开(公告)日：2018-01-25
申请号：US15547636
申请日：2015-05-29
申请人： Hitachi, Ltd.
CPC分类号： H01L35/20 , B22F3/02 , B22F3/10 , C22C33/0207 , C22C33/0257 , C22C38/00 , C22C38/06 , C22C38/12 , C22C38/14 , C23C14/18 , C23C14/185
摘要： Provided is a thermoelectric conversion material formed from a full Heusler alloy represented by the composition formula: Fe2+α(Ti1−βM1β)1−α+γ(Al1−δM2δ)1−γ. M1 represents at least one element selected from the group consisting of V, Nb and Ta, and M2 represents at least one element selected from the group consisting of Group 13 elements except for Al and Group 14 elements, α satisfies the relation: 0
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