WO2007108276A1 - 水素センサ - Google Patents
水素センサ Download PDFInfo
- Publication number
- WO2007108276A1 WO2007108276A1 PCT/JP2007/053421 JP2007053421W WO2007108276A1 WO 2007108276 A1 WO2007108276 A1 WO 2007108276A1 JP 2007053421 W JP2007053421 W JP 2007053421W WO 2007108276 A1 WO2007108276 A1 WO 2007108276A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thin film
- film layer
- layer
- hydrogen sensor
- catalyst layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/005—H2
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/7769—Measurement method of reaction-produced change in sensor
- G01N2021/7773—Reflection
Definitions
- the present invention relates to a hydrogen sensor for detecting hydrogen gas in an atmosphere.
- Hydrogen is attracting attention as an energy source that can suppress the emission of carbon dioxide and carbon dioxide.
- hydrogen gas leaks into the atmosphere (for example, in an underground parking lot for a vehicle using a hydrogen fuel cell, or in an atmosphere such as a hydrogen gas station), the leaked hydrogen gas may explode. For this reason, it is necessary to quickly detect the leak of hydrogen gas and stop the leak.
- a semiconductor sensor using an oxide soot is used as a hydrogen sensor for detecting intense leaked hydrogen gas.
- this semiconductor sensor can not detect hydrogen gas unless it is heated to about 400 degrees Celsius. For this reason, it is necessary to take measures to prevent leakage of hydrogen gas accompanying heating, which complicates the structure as a device for detecting leakage hydrogen gas, resulting in an increase in cost.
- a hydrogen sensor as shown in FIG. 4 as a hydrogen sensor which does not require heating and which does not require any explosion proof measures is proposed by JP 2005-83832 (hereinafter referred to as Patent Document 1).
- a thin film layer 12 is formed on the surface 11a of a substrate 11 such as resin (for example, vinyl sheet) or glass.
- a catalyst layer 13 is further formed on the surface 12 a of the thin film layer 12, and when the catalyst layer 13 comes in contact with the leaked hydrogen gas, the thin film layer 12 is rapidly hydrogenated by its catalytic action, whereby the thin film layer 12 is Optical reflectance changes.
- the catalyst layer 13 However, if water or oxygen in the atmosphere is absorbed, the catalyst layer 13 is degraded to reduce the catalytic action, and further, if water, oxygen or the like penetrates the thin film layer 12, the thin film layer 12 is deteriorated. Such deterioration of the catalyst layer 13 or the thin film layer 12 may cause problems in the rapid detection of the leaked hydrogen gas.
- a thin film layer is formed on the surface of a substrate such as glass or resin, a catalyst layer is further formed on the surface of this thin film layer, and this catalyst layer acts catalytically when it contacts leaked hydrogen gas.
- the invention is applied to a hydrogen sensor that rapidly hydrogenates a thin film layer to change the optical reflectance of the thin film layer.
- the present invention prevents the moisture or oxygen contained in the substrate or absorbed from the atmosphere from the atmosphere from penetrating into the thin film layer, thereby preventing the catalyst layer or the catalyst layer from being absorbed.
- An object of the present invention is to provide a hydrogen sensor capable of preventing deterioration of a thin film layer.
- the present invention provides a hydrogen sensor capable of preventing the catalyst layer or the thin film layer from being deteriorated by preventing the catalyst layer from absorbing moisture, oxygen and the like in the atmosphere in order to solve the above-mentioned problems. To aim.
- a hydrogen sensor comprises a substrate, a thin film layer formed on the substrate, and the thin film formed by the hydrogen gas formed on the surface of the thin film layer and contained in an atmosphere.
- a hydrogen sensor having a catalyst layer for hydrogenating the layer to change the optical reflectance of the thin film layer, the hydrogen sensor being formed between the substrate and the thin film layer or on one or both of the surfaces of the catalyst layer Provided with a protective film.
- a protective film between the substrate of the hydrogen sensor and the thin film layer it is possible to prevent water, oxygen and the like absorbed by the substrate from permeating the protective film. Further, by forming a protective film on the surface of the catalyst layer, it is possible to prevent the catalyst layer from absorbing moisture, oxygen and the like in the atmosphere. Therefore, deterioration of the protective film and the catalyst layer can be prevented.
- the hydrogen sensor according to the present invention can prevent the deterioration of the thin film layer and the catalyst layer, it is possible to maintain the hydrogen gas detection performance of appropriately detecting the leaked hydrogen gas for a long period of time. it can.
- the thin film layer is a magnesium 'nickel alloy thin film layer or a magnesium thin film It may be a membrane layer.
- the thin film layer of the hydrogen sensor By making the thin film layer of the hydrogen sensor into a magnesium′-nickel alloy thin film layer or a magnesium thin film layer, it is possible to form a thin film layer whose optical reflectance changes when it is exposed to the leaked hydrogen gas.
- the catalyst layer may be formed of palladium or platinum.
- the thin film layer can be hydrogenated by its catalytic action.
- the thickness of the catalyst layer may be 1 nm to 100 nm.
- the catalyst layer having a thickness of 1 nm to 100 nm is exposed to the leaked hydrogen gas, the thin film layer is rapidly hydrogenated.
- the protective film may be a silicon compound, a fluorine compound or an oil and fat force.
- the catalyst layer By forming the protective film with a silicon-based compound, a fluorine-based compound or an oil and fat (for example, mineral oil, vegetable oil, etc.), the catalyst layer can be prevented while moisture and oxygen in the atmosphere penetrate into the thin film layer and the catalyst layer. Can exhibit the catalytic action of
- the thickness of the protective film may be 5 nm to 200 nm. If the thickness of the protective film is 5 nm or 200 nm, the catalyst layer hardly inhibits rapid hydrogenation of the thin film layer.
- FIG. 1 A diagram showing an example of the cross-sectional structure of a hydrogen sensor according to an embodiment of the present invention
- FIG. 3 A diagram showing an example of a cross-sectional structure in a modification of the hydrogen sensor shown in FIG.
- FIG. 4 is a view showing an example of the cross-sectional structure of a conventional hydrogen sensor.
- the hydrogen sensor 10a shown in FIG. First protective film 14 made of silicon dioxide (SiO.sub.2) on the surface 11a of the substrate 11 such as
- a thin film layer 12 made of magnesium 'nickel alloy or magnesium is formed on the surface 14a of the first protective film 14. Furthermore, on the surface 12 a of the thin film layer 12, a catalyst layer 13 which is also palladium or platinum is formed, and on the surface 13 a of the catalyst layer 13, a second protective film 15 made of silicon dioxide is formed. There is.
- the thin film layer 12 is formed on the surface 1 la of the substrate 11 via the first protective film 14 and the second protective film 15 is formed on the surface 13a of the catalyst layer 13 It is done.
- the hydrogen sensor 10a having such a structure prevents the moisture, oxygen, etc. absorbed by the substrate 11 by the first protective film 14 from penetrating into the thin film layer 12, and the second sensor
- the protective film 15 prevents the moisture and oxygen in the atmosphere from being absorbed by the catalyst layer 13. As a result, deterioration of the thin film layer 12 and the catalyst layer 13 is prevented.
- FIG. 2 is a graph showing the deterioration (aging deterioration) of the thin film layer 12 and the catalyst layer 13 due to the presence or absence of a protective film.
- the thin film layer 12 When the thin film layer 12 is hydrogenated upon contact with hydrogen, the electrical resistance increases with the change of the optical reflectance.
- the thin film layer 12 also has an increase in electrical resistance due to oxidation (deterioration). Therefore, the deterioration of the thin film layer 12 can be evaluated as follows from the increase of its electrical resistance.
- FIG. 2 shows that the hydrogen sensor having a protective film does not have a thin film layer with less deterioration, and the hydrogen sensor having a protective film has a worse film layer.
- the thin film layer 12 can be formed by sputtering, vacuum evaporation, electron beam evaporation, plating, or the like.
- the composition of the thin film layer 12 is, for example, MgNix (0 ⁇ x ⁇ 0.6).
- the catalyst layer 13 can be formed on the surface 12 a of the thin film layer 12 by coating or the like.
- the thickness of the catalyst layer 13 is lnm to lOOnm.
- the first protective film 14 is a sputtering method , Vacuum evaporation, plating, or the like.
- the second protective film 15 can be formed by a spray method, dip coating method, spin coating method or the like in addition to the method of forming the first protective film 14.
- the surface of the second protective film 15 does not have to be as smooth as the surface 14 a of the protective film 14.
- the thickness of the first protective film 14 may be appropriately set in accordance with the hygroscopicity (degree of absorbing moisture, oxygen, etc.) of the substrate 11 or the like.
- the second protective film 15 preferably has a thickness of 5 nm to 200 nm.
- the second protective film 15 having the above thickness prevents the catalyst layer 13 from absorbing moisture, oxygen and the like in the atmosphere, and catalyzes the catalytic action of the catalyst layer 13 (hydrogen gas in the atmosphere of the catalyst layer 13). And the catalyst action to hydrogenate the thin film layer 12 can be rapidly vaporized.
- the catalyst layer 13 causes the thin film layer 12 to be hydrogenated by its catalytic action. A rapid change can be made to the optical reflectivity of layer 12. As a result, the hydrogen sensor 10a can quickly detect the leak of hydrogen gas.
- the hydrogen sensor 10a can reduce moisture, oxygen, and the like that permeates the catalyst layer 13 and the thin film layer 12 from the atmosphere. Therefore, the deterioration of the catalyst layer 13 and the thin film layer 12 can be reduced, and good hydrogen gas detection performance can be maintained over a relatively long period of time.
- the second protective film 15 is thicker than the above-mentioned thickness, the time for the catalyst layer 13 to hydrogenate the thin film layer 12 by its catalytic action becomes long.
- the thickness of the second protective film 15 can be appropriately set in consideration of the trade-off relationship between the hydrogen gas detection time and the life required for the hydrogen sensor.
- the second protective film 15 prevents the permeation of moisture, oxygen, and the like from the atmosphere to the catalyst layer 13 and the thin film layer 12, thereby making the catalyst Deterioration of the layer 13 and the thin film layer 12 can be prevented. As a result, the good hydrogen gas detection performance of the hydrogen sensor 10b can be maintained for a long time.
- the hydrogen sensor according to the present invention is not limited to the ones in the respective embodiments described above, and can be appropriately modified without departing from the scope of the invention.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Nanotechnology (AREA)
- Combustion & Propulsion (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Composite Materials (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2645592 CA2645592A1 (en) | 2006-03-20 | 2007-02-23 | Hydrogen sensor |
| US12/225,320 US20100290050A1 (en) | 2006-03-20 | 2007-02-23 | Hydrogen Sensor |
| CN2007800184037A CN101449147B (zh) | 2006-03-20 | 2007-02-23 | 氢传感器 |
| EP07714876A EP1998169A4 (en) | 2006-03-20 | 2007-02-23 | HYDROGEN SENSOR |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-076352 | 2006-03-20 | ||
| JP2006076352A JP2007248424A (ja) | 2006-03-20 | 2006-03-20 | 水素センサ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007108276A1 true WO2007108276A1 (ja) | 2007-09-27 |
Family
ID=38522312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/053421 Ceased WO2007108276A1 (ja) | 2006-03-20 | 2007-02-23 | 水素センサ |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20100290050A1 (ja) |
| EP (1) | EP1998169A4 (ja) |
| JP (1) | JP2007248424A (ja) |
| KR (1) | KR20080106239A (ja) |
| CN (1) | CN101449147B (ja) |
| CA (1) | CA2645592A1 (ja) |
| WO (1) | WO2007108276A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149752A1 (ja) * | 2007-06-04 | 2008-12-11 | Kabushiki Kaisha Atsumitec | 水素センサ |
| CN101418080B (zh) * | 2008-11-13 | 2011-06-22 | 北京科技大学 | 一种氢传感器用壳聚糖质子交换膜的制备方法 |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5150533B2 (ja) * | 2009-03-06 | 2013-02-20 | 株式会社アツミテック | 水素センサ |
| JP5232045B2 (ja) * | 2009-03-06 | 2013-07-10 | 株式会社アツミテック | 水素センサ |
| CN104730114A (zh) * | 2013-12-19 | 2015-06-24 | 中国科学院上海硅酸盐研究所 | 一种用于氢气传感器的镁合金薄膜及其制备方法 |
| CN105289588A (zh) * | 2014-07-28 | 2016-02-03 | 中国科学院上海硅酸盐研究所 | 一种钯合金催化薄膜材料及其制备方法 |
| KR101704122B1 (ko) | 2014-10-08 | 2017-02-07 | 현대자동차주식회사 | 수소 검출 채색 센서 |
| KR101645661B1 (ko) * | 2014-12-18 | 2016-08-05 | 울산대학교 산학협력단 | 백금/팔라듐 코어―셀 그래핀 하이브리드 기반 수소센서 및 그 제조방법 |
| CN108027333B (zh) * | 2015-09-16 | 2021-06-25 | Koa株式会社 | 氢传感器 |
| JP6709429B2 (ja) * | 2015-12-21 | 2020-06-17 | スタンレー電気株式会社 | 水素濃度測定装置 |
| KR101772328B1 (ko) * | 2016-05-03 | 2017-08-29 | 한양대학교 에리카산학협력단 | 수분 수소 흡착 게터 및 그 제조 방법 |
| CN108717053A (zh) * | 2018-06-13 | 2018-10-30 | 佛山市澄澜点寸科技有限公司 | 一种氢气传感器 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59120945A (ja) * | 1982-12-28 | 1984-07-12 | Shinkosumosu Denki Kk | 水素選択性センサ |
| JPS62170840A (ja) * | 1986-01-23 | 1987-07-27 | Agency Of Ind Science & Technol | 水素検知光センサ |
| JPS62257046A (ja) * | 1986-04-30 | 1987-11-09 | Hochiki Corp | 水素センサ |
| JPH0197248U (ja) * | 1987-12-21 | 1989-06-28 | ||
| JPH01121836U (ja) * | 1988-02-12 | 1989-08-18 | ||
| JP2004053542A (ja) * | 2002-07-24 | 2004-02-19 | National Institute Of Advanced Industrial & Technology | マグネシウム・ニッケル合金薄膜を用いた水素センサ及び水素濃度測定方法 |
| JP2005083832A (ja) | 2003-09-05 | 2005-03-31 | National Institute Of Advanced Industrial & Technology | 光学反射率変化を用いる水素センサ、水素検出方法及び検出装置 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4324761A (en) * | 1981-04-01 | 1982-04-13 | General Electric Company | Hydrogen detector |
| US4560444A (en) * | 1983-12-29 | 1985-12-24 | Uop Inc. | Gas detection with novel electrolyte membrane and solid internal reference |
| US4892834A (en) * | 1986-08-07 | 1990-01-09 | Eic Laboratories, Inc. | Chemical sensor |
| DE3731891C1 (de) * | 1987-09-23 | 1989-01-26 | Sipra Patent Beteiligung | Rueckstellvorrichtung fuer Selektierapparate von Rundstrickmaschinen |
| US5273779A (en) * | 1991-12-09 | 1993-12-28 | Industrial Technology Research Institute | Method of fabricating a gas sensor and the product fabricated thereby |
| US5372785A (en) * | 1993-09-01 | 1994-12-13 | International Business Machines Corporation | Solid-state multi-stage gas detector |
| AUPM551994A0 (en) * | 1994-05-09 | 1994-06-02 | Unisearch Limited | Method and device for optoelectronic chemical sensing |
| US5670115A (en) * | 1995-10-16 | 1997-09-23 | General Motors Corporation | Hydrogen sensor |
| US6006582A (en) * | 1998-03-17 | 1999-12-28 | Advanced Technology Materials, Inc. | Hydrogen sensor utilizing rare earth metal thin film detection element |
| US6596236B2 (en) * | 1999-01-15 | 2003-07-22 | Advanced Technology Materials, Inc. | Micro-machined thin film sensor arrays for the detection of H2 containing gases, and method of making and using the same |
| JP2002122582A (ja) * | 2000-10-17 | 2002-04-26 | Sony Corp | 還元性物質検知装置およびその製造方法と還元性物質検知方法 |
| CN1398360A (zh) * | 2000-11-27 | 2003-02-19 | 皇家菲利浦电子有限公司 | 光转换装置 |
| US20050272989A1 (en) * | 2004-06-04 | 2005-12-08 | Medtronic Minimed, Inc. | Analyte sensors and methods for making and using them |
| US7370511B1 (en) * | 2004-03-08 | 2008-05-13 | Mst Technology Gmbh | Gas sensor with attenuated drift characteristic |
| US7233034B2 (en) * | 2005-08-19 | 2007-06-19 | Midwest Research Institute | Hydrogen permeable protective coating for a catalytic surface |
| JP4158862B2 (ja) * | 2005-10-17 | 2008-10-01 | 株式会社アツミテック | 水素ガス可視化装置 |
| DE102005057214A1 (de) * | 2005-11-29 | 2007-06-14 | Justus-Liebig-Universität Giessen | Erfindung betreffend Gassensoren |
-
2006
- 2006-03-20 JP JP2006076352A patent/JP2007248424A/ja active Pending
-
2007
- 2007-02-23 US US12/225,320 patent/US20100290050A1/en not_active Abandoned
- 2007-02-23 WO PCT/JP2007/053421 patent/WO2007108276A1/ja not_active Ceased
- 2007-02-23 EP EP07714876A patent/EP1998169A4/en not_active Withdrawn
- 2007-02-23 CN CN2007800184037A patent/CN101449147B/zh active Active
- 2007-02-23 KR KR20087022103A patent/KR20080106239A/ko not_active Ceased
- 2007-02-23 CA CA 2645592 patent/CA2645592A1/en not_active Abandoned
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59120945A (ja) * | 1982-12-28 | 1984-07-12 | Shinkosumosu Denki Kk | 水素選択性センサ |
| JPS62170840A (ja) * | 1986-01-23 | 1987-07-27 | Agency Of Ind Science & Technol | 水素検知光センサ |
| JPS62257046A (ja) * | 1986-04-30 | 1987-11-09 | Hochiki Corp | 水素センサ |
| JPH0197248U (ja) * | 1987-12-21 | 1989-06-28 | ||
| JPH01121836U (ja) * | 1988-02-12 | 1989-08-18 | ||
| JP2004053542A (ja) * | 2002-07-24 | 2004-02-19 | National Institute Of Advanced Industrial & Technology | マグネシウム・ニッケル合金薄膜を用いた水素センサ及び水素濃度測定方法 |
| JP2005083832A (ja) | 2003-09-05 | 2005-03-31 | National Institute Of Advanced Industrial & Technology | 光学反射率変化を用いる水素センサ、水素検出方法及び検出装置 |
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| Title |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149752A1 (ja) * | 2007-06-04 | 2008-12-11 | Kabushiki Kaisha Atsumitec | 水素センサ |
| CN101418080B (zh) * | 2008-11-13 | 2011-06-22 | 北京科技大学 | 一种氢传感器用壳聚糖质子交换膜的制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101449147B (zh) | 2011-04-06 |
| CN101449147A (zh) | 2009-06-03 |
| US20100290050A1 (en) | 2010-11-18 |
| JP2007248424A (ja) | 2007-09-27 |
| CA2645592A1 (en) | 2007-09-27 |
| KR20080106239A (ko) | 2008-12-04 |
| EP1998169A1 (en) | 2008-12-03 |
| EP1998169A4 (en) | 2011-10-12 |
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