专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5565073A Electrochemical peroxide generator 失效
标题翻译：电化学过氧化物发生器
公开(公告)号：US5565073A
公开(公告)日：1996-10-15
申请号：US463752
申请日：1995-06-05
申请人： Mark E. Fraser , Alan S. Woodman , Everett B. Anderson , E. Jennings Taylor
发明人： Mark E. Fraser , Alan S. Woodman , Everett B. Anderson , E. Jennings Taylor
IPC分类号： C25B1/30 , C25B11/03 , C25B11/04 , H01M4/90 , C25B9/00
CPC分类号： H01M4/9083 , C25B1/30 , C25B11/035 , C25B11/0473 , H01M4/90
摘要： In the disclosed electrochemical cell for the production of an alkaline solution of peroxide, especially on-site production, the electrolyte is divided into an aqueous alkaline catholyte and an aqueous alkaline anolyte, and the cathode is a gas-diffusion electrode. The active material of the electrolyte side of the gas-diffusion cathode comprises a particulate catalyst support material having a surface area of about 50 to about 2000 m.sup.2 /g, and, deposited on the particles of this support material, 0.1 to 50 weight-%, based on the weight of the active layer, of gold or gold alloy poly-crystal particles having an average size .gtoreq.5 but less than about 20 nanometers. These poly-crystal gold or gold alloy particles have a structure consisting essentially of combined individual monocrystals and are substantially selectively catalytic for the reduction of oxygen to peroxide ion or hydrogen peroxide (e.g. HOO.sup..theta.). The electrolyte flow patterns are designed to avoid loss of peroxide resulting from oxidation at the anode. In the operation of the cell, a product with a hydroxyl:perhydroxyl ratio less than 2:1 can be obtained.
摘要翻译：在所公开的用于生产过氧化物碱性溶液的电化学电池中，特别是现场生产，电解质分为碱性阴极电解液和碱性阳极电解液，阴极是气体扩散电极。气体扩散阴极的电解质侧的活性材料包括具有约50至约2000m 2 / g的表面积的颗粒状催化剂载体材料，并沉积在该载体材料的颗粒上，0.1至50重量％基于活性层的重量，具有平均尺寸≥5但小于约20纳米的金或金合金多晶粒子。这些多晶金或金合金颗粒具有基本上由组合的单个单晶组成的结构，并且对于将氧还原成过氧化物离子或过氧化氢（例如HOOO）基本上是选择性催化的。电解质流动图案被设计为避免由阳极氧化引起的过氧化物的损失。在电池的操作中，可以获得羟基：全羟基比小于2:1的产物。

2. 发明授权

US5647968A Process for making peroxide 失效
标题翻译：制造过氧化物的方法
公开(公告)号：US5647968A
公开(公告)日：1997-07-15
申请号：US633563
申请日：1996-04-17
申请人： Mark E. Fraser , Alan S. Woodman , Everett B. Anderson , E. Jennings Taylor
发明人： Mark E. Fraser , Alan S. Woodman , Everett B. Anderson , E. Jennings Taylor
IPC分类号： C25B1/30 , C25B11/03 , C25B11/04 , H01M4/90
CPC分类号： H01M4/9083 , C25B1/30 , C25B11/035 , C25B11/0473 , H01M4/90
摘要： In the disclosed electrochemical cell for the production of an alkaline solution of peroxide, especially on-site production, the electrolyte is divided into an aqueous alkaline catholyte and an aqueous alkaline anolyte, and the cathode is a gas-diffusion electrode. The active material of the electrolyte side of the gas-diffusion cathode comprises a particulate catalyst support material having a surface area of about 50 to about 2000 m.sup.2 /g, and, deposited on the particles of this support material, 0.1 to 50 weight-%, based on the weight of the active layer, of gold or gold alloy particles having an average size >40 but less than about 200.ANG.. These gold or gold alloy particles are substantially selectively catalytic for the reduction of oxygen to peroxide (e.g. HOO.sup..crclbar.). The electrolyte flow patterns are designed to avoid loss of peroxide resulting from oxidation at the anode. In the operation of the cell, a product with a hydroxyl:perhydroxyl ratio less than 2:1 can be obtained.
摘要翻译：在所公开的用于生产过氧化物碱性溶液的电化学电池中，特别是现场生产，电解质分为碱性阴极电解液和碱性阳极电解液，阴极是气体扩散电极。气体扩散阴极的电解质侧的活性材料包括具有约50至约2000m 2 / g的表面积的颗粒状催化剂载体材料，并沉积在该载体材料的颗粒上，0.1至50重量％基于活性层的重量，具有平均尺寸> 40但小于约200的金或金合金颗粒。这些金或金合金颗粒对于将氧还原成过氧化物（例如HOO（ - ））基本上是选择性催化的。电解质流动图案被设计为避免由阳极氧化引起的过氧化物的损失。在电池的操作中，可以获得羟基：全羟基比小于2:1的产物。

3. 发明授权

US5695622A Electrode for peroxide generator and method for preparing it 失效
标题翻译：用于过氧化物发生器的电极及其制备方法
公开(公告)号：US5695622A
公开(公告)日：1997-12-09
申请号：US754003
申请日：1996-11-21
申请人： Mark E. Fraser , Alan S. Woodman , Everett B. Anderson , E. Jennings Taylor
发明人： Mark E. Fraser , Alan S. Woodman , Everett B. Anderson , E. Jennings Taylor
IPC分类号： C25B1/30 , C25B11/03 , C25B11/04 , H01M4/90
CPC分类号： H01M4/9083 , C25B1/30 , C25B11/035 , C25B11/0473 , H01M4/90
摘要： In the disclosed electrochemical cell for the production of an alkaline solution of peroxide, especially on-site production, the electrolyte is divided into an aqueous alkaline catholyte and an aqueous alkaline anolyte, and the cathode is a gas-diffusion electrode. The active material of the electrolyte side of the gas-diffusion cathode comprises a particulate catalyst support material having a surface area of about 50 to about 2000 m.sup.2 /g, and, deposited on the particles of this support material, 0.1 to 50 weight-%, based on the weight of the active layer, of gold or gold alloy particles having an average size >40 but less than about 200 .ANG.. These gold or gold alloy particles are substantially selectively catalytic for the reduction of oxygen to peroxide (e.g. HOO.sup..crclbar.). The electrolyte flow patterns are designed to avoid loss of peroxide resulting from oxidation at the anode. In the operation of the cell, a product with a hydroxyl:perhydroxyl ratio lees than 2:1 can be obtained.
摘要翻译：在所公开的用于生产过氧化物碱性溶液的电化学电池中，特别是现场生产，电解质分为碱性阴极电解液和碱性阳极电解液，阴极是气体扩散电极。气体扩散阴极的电解质侧的活性材料包括具有约50至约2000m 2 / g的表面积的颗粒状催化剂载体材料，并沉积在该载体材料的颗粒上，0.1至50重量％基于活性层的重量，具有平均尺寸> 40但小于约200的金或金合金颗粒。这些金或金合金颗粒对于将氧还原成过氧化物（例如HOO（ - ））基本上是选择性催化的。电解质流动图案被设计为避免由阳极氧化引起的过氧化物的损失。在电池的操作中，可以获得羟基：全羟基比例为2:1的产品。

4. 发明授权

US5085743A Electrode for current-limited cell, cell including the electrode method for using the cell and a method of making the electrode 失效
标题翻译：用于电流限制电池的电极，包括使用电池的电极方法的电池和制造电极的方法
公开(公告)号：US5085743A
公开(公告)日：1992-02-04
申请号：US518071
申请日：1990-05-02
申请人： N. R. K. Vilambi Reddy , Everett B. Anderson , Earl J. Taylor
发明人： N. R. K. Vilambi Reddy , Everett B. Anderson , Earl J. Taylor
IPC分类号： G01N27/30
CPC分类号： G01N27/30
摘要： The gas-sensing electrodes prepared according to this invention are specifically designed for cells which operate in a current-limited mode, i.e. at current densities well below 20 mA/cm.sup.2. Such cells are particularly useful to measure or detect a gaseous component of a gaseous environment or stream, provided the gaseous component can be electrochemically oxidized or reduced. In an alkaline, metal-oxygen cell for example, an electrode of this invention can be used as an oxygen cathode. The electrode is prepared by:(a) bringing an exposed face of a self-supporting, electrically-conducting sheet of fibrous or sintered-particle material having a thickness of at least about 30 .mu.m and a flexural strength of at least 2000 kPa into contact with an electrolyte containing ions of a catalytic metal, the electrolyte also being in contact with a counterelectrode,(b) applying a pulsed-D.C. current which tends to favor electroplating of metal and strong adherence of the plated metal to the electrically-conducting sheet, so that a continuous electrodeposited layer of catalytic metal is formed, and(c) applying a hydrophobic layer to the thus-plated face, this hydrophobic layer being thick enough to limit gas diffusion into the cross-section of the sheet, so that the resulting electrode will operate in a current-limited mode, but not so thick as to have a significant adverse effect upon the response time of the cell.
摘要翻译：根据本发明制备的气体感测电极被专门设计用于以限流模式操作的电池，即在远低于20mA / cm 2的电流密度下工作的电池。这样的电池特别可用于测量或检测气态环境或流的气体组分，条件是气态组分可被电化学氧化或还原。例如，在碱金属 - 氧电池中，可以使用本发明的电极作为氧阴极。电极通过以下步骤制备：（a）将具有至少约30μm的厚度和至少2000kPa的弯曲强度的自支撑导电的纤维或烧结颗粒材料片的暴露面引入与含有催化金属离子的电解液接触，电解质也与反电极接触，（b）施加脉冲DC 倾向于有利于电镀金属的电流和电镀金属对导电片的强粘附性，从而形成催化金属的连续的电沉积层，（c）在这样镀上的表面上涂敷疏水层，疏水层足够厚以限制气体扩散到片材的横截面中，使得所得电极将以限流模式操作，但不太厚以致对电池的响应时间具有显着的不利影响。

5. 发明授权

US5084144A High utilization supported catalytic metal-containing gas-diffusion electrode, process for making it, and cells utilizing it 失效
公开(公告)号：US5084144A
公开(公告)日：1992-01-28
申请号：US560206
申请日：1990-07-31
申请人： N. R. K. Vilambi Reddy , Everett B. Anderson , Earl J. Taylor
发明人： N. R. K. Vilambi Reddy , Everett B. Anderson , Earl J. Taylor
IPC分类号： H01M4/88 , H01M4/92 , H01M8/08 , H01M8/10
CPC分类号： H01M4/8807 , H01M4/8668 , H01M4/8853 , H01M4/926 , H01M8/08 , H01M8/1004 , H01M2300/0082 , H01M8/1007 , H01M8/1009 , Y02P70/56 , Y10S205/917
摘要： Gas-diffusion electrodes (GDE's) suitable for use with a solid polymer electrolyte (s.p.e.), particularly in s.p.e. fuel cells, which GDE's provide unusually highly efficient use of noble or precious electrocatalytic metals, are obtained by starting with a GDE which is essentially fully fabricated except for electrocatalytic metal treatment and s.p.e. treatment, e.g. a carbon GDE having a gas-permeable hydrophobic face and a particulate carbon-containing catalytic face. This untreated GDE is treated bya. impregnating an s.p.e. solutuion into the catalytic face until the solution penetrates part way into the cross-section of the GDE, especially into the carbon particulate or other support material, but not as far as the hydrophobic, gas permeable face,b. inserting the thus-treated GDE and a counterelectrode into a plating bath containing, for example, M.sup.+, M.sup.++, and/or M.sup.+++ ions, where M is a metal of Group VIII or I-B of the Periodic Table, andc. applying an interrupted current (periodically interrupted or a single, long pulse

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式