-
公开(公告)号：US5227042A
公开(公告)日：1993-07-13
申请号：US883746
申请日：1992-05-15
IPC分类号： C12Q1/00
CPC分类号： C12Q1/003 , C12Q1/005 , Y10S435/817
摘要： An enzyme electrode is prepared with a composite coating on an electrical conductor. The composite coating is formed from a casting solution of a perfluorosulfonic acid polymer, an enzyme, and a carbon supported catalyst. The solution may be cast directly on the conductor surface or may be formed as a membrane and applied to the surface. The perfluorosulfonic acid ionomer formed from the casting solution provides an insoluble biocompatible protective matrix for the enzyme and acts to retain the enzyme for long term availability in the electrode structure. The carbon supported catalyst provides catalytic sites throughout the layer for the oxidation of hydrogen peroxide from the enzyme reactions. The carbon support then provides a conductive path for establishing an electrical signal to the electrical conductor. In one embodiment, the electrical conductor is a carbon cloth that permits oxygen or other gas to be introduced to the perfluorosulfonic polymer to promote the enzyme reaction independent of oxygen in the solution being tested.
摘要翻译： 用电导体上的复合涂层制备酶电极。 复合涂层由全氟磺酸聚合物，酶和负载碳的催化剂的流延溶液形成。 溶液可以直接浇铸在导体表面上，或者可以形成为膜并施加到表面上。 由浇铸溶液形成的全氟磺酸离聚物为酶提供了不溶的生物相容性保护基质，并且用于保留酶在电极结构中的长期可利用性。 碳载体催化剂在整个层中提供催化位点，用于从酶反应中氧化过氧化氢。 碳载体然后提供用于向电导体建立电信号的导电路径。 在一个实施方案中，电导体是碳布，其允许将氧气或其它气体引入全氟磺酸聚合物以促进酶反应，而与所测溶液中的氧无关。
-
公开(公告)号：US5082550A
公开(公告)日：1992-01-21
申请号：US448475
申请日：1989-12-11
IPC分类号： G01N27/327 , C12Q1/00
CPC分类号： C12Q1/002 , Y10S435/817
摘要： An electrochemical sensor electrode is formed from an electronic conductor coated with a casting solution containing a perfluorosulfonic acid ionomer and a selected enzyme. The selected enzyme catalyzes a reaction between a predetermined substance in a solution and oxygen to form an electrochemically active compound that is detected at the electronic conductor. The resulting perfluorosulfonic acid polymer provides a stable matrix for the enzyme for long lived enzyme activity, wherein only thin coatings are required on the metal conductor. The polymer also advantageously repels interfering substances from contacting the enzyme and contains quantities of oxygen to maintain a sensing capability during conditions of oxygen depletion in the sample. In one particular embodiment, glucose oxidase is mixed with the perfluorosulfonic acid ionomer to form an electrode for glucose detection.
摘要翻译： 电化学传感器电极由涂覆有含有全氟磺酸离聚物和选定酶的流延溶液的电子导体形成。 所选择的酶催化溶液中的预定物质与氧之间的反应，以形成在电子导体处检测到的电化学活性化合物。 所得的全氟磺酸聚合物为长寿命酶活性的酶提供稳定的基质，其中在金属导体上仅需要薄涂层。 该聚合物还有利地排除干扰物质接触酶，并含有一定量的氧以在样品中的氧耗尽条件下保持感测能力。 在一个具体实施方案中，葡萄糖氧化酶与全氟磺酸离聚物混合以形成用于葡萄糖检测的电极。
-
公开(公告)号：US06818341B2
公开(公告)日：2004-11-16
申请号：US09848823
申请日：2001-05-03
IPC分类号： H01M490
CPC分类号： H01M4/926 , B01J21/18 , B01J23/72 , H01M4/8605 , H01M4/881 , H01M4/90 , H01M4/92 , H01M4/921 , H01M8/1004 , H01M2004/8684 , H01M2300/0082
摘要： A polymer electrolyte fuel cell (PEFC) is designed to operate on a reformate fuel stream containing oxygen and diluted hydrogen fuel with CO impurities. A polymer electrolyte membrane has an electrocatalytic surface formed from an electrocatalyst mixed with the polymer and bonded on an anode side of the membrane. An anode backing is formed of a porous electrically conductive material and has a first surface abutting the electrocatalytic surface and a second surface facing away from the membrane. The second surface has an oxidation catalyst layer effective to catalyze the oxidation of CO by oxygen present in the fuel stream where at least the layer of oxidation catalyst is formed of a non-precious metal oxidation catalyst selected from the group consisting of Cu, Fe, Co, Tb, W, Mo, Sn, and oxides thereof, and other metals having at least two low oxidation states.
摘要翻译： 聚合物电解质燃料电池（PEFC）设计用于在含有CO和稀释的氢燃料与CO杂质的重整燃料流上运行。 聚合物电解质膜具有由与聚合物混合并结合在膜的阳极侧上的电催化剂形成的电催化剂表面。 阳极背衬由多孔导电材料形成，并且具有邻接电催化表面的第一表面和背离膜的第二表面。 第二表面具有氧化催化剂层，其有效地催化存在于燃料流中的氧的CO氧化，其中氧化催化剂层至少由非贵金属氧化催化剂形成，所述非贵金属氧化催化剂选自Cu，Fe， Co，Tb，W，Mo，Sn及其氧化物，以及具有至少两种低氧化态的其它金属。
-
-
搜索结果
3 条记录 (耗时 0.018 秒)
