公开(公告)号：US6045686A

公开(公告)日：2000-04-04

申请号：US991029

申请日：1997-12-15

申请人： James M. Fenton ,  John E. Dresty, Jr. ,  Richard Bodensteiner ,  Chunzhi He ,  Ramakrishnan Venkataraman ,  Jung-Chou Lin ,  Antonio J. Aldykiewicz, Jr.

发明人： James M. Fenton ,  John E. Dresty, Jr. ,  Richard Bodensteiner ,  Chunzhi He ,  Ramakrishnan Venkataraman ,  Jung-Chou Lin ,  Antonio J. Aldykiewicz, Jr.

IPC分类号： C25F5/00 ,  C25F1/04 ,  C25F1/06

CPC分类号： C25F5/00

摘要： A process for the delacquering and detinning of a metal substrate is presented comprising the fully electrochemical removal of both an outer polymeric coating and an inner tin coating from a metal substrate. The disclosed method provides a clean metal substrate, and results in wastes which are easily disposed of with minimal cost and minimal environmental impact. In one embodiment, the present invention comprises a one-stage process for removing an outer polymeric coating and an inner tin coating from a metal substrate in a single electrolyte bath through electrolytic removal of both the polymeric and tin layers from the metal substrate. An electrically conductive container having the electrolyte bath therein acts as an anode in the process, and the removed tin is plated out on the cathode. In another embodiment, the present invention comprises a two-stage process for removing an outer polymeric coating and an inner tin coating from a metal substrate. The first stage comprises removal of the polymeric coating in a first electrolyte bath through application of a cathodic current to a first electrically conductive container, e.g. tank, drum, or the like. The polymeric and tin coated metal substrate that is immersed in the first electrolyte bath is cathodically protected provided the coated metal substrate is in contact with the first electrically conductive container. The second stage comprises removal of the tin coating via application of moderate anodic currents to a second electrically conductive container, e.g. tank, drum, or the like. Such current results in the selective removal of tin from the substrate metal. The second electrically conductive container and the tin cans act as an anode in the process, and the removed tin is plated out on the cathode.

摘要翻译： 提出了用于金属基材的脱胶和鉴定的方法，其包括从金属基材完全电化学去除外聚合物涂层和内锡涂层。 所公开的方法提供清洁的金属基底，并且导致易于处理的废物，其成本最低并且对环境的影响最小。 在一个实施方案中，本发明包括通过从金属基底电解去除聚合物层和锡层从单一电解质浴中从金属基底去除外部聚合物涂层和内部锡涂层的一步法。 其中具有电解质浴的导电容器在该过程中用作阳极，并且将去除的锡电镀在阴极上。 在另一个实施方案中，本发明包括用于从金属基底去除外聚合物涂层和内锡涂层的两阶段方法。 第一阶段包括通过将阴极电流施加到第一导电容器，例如在第一电解液槽中去除聚合物涂层。 罐，鼓等。 浸渍在第一电解液槽中的聚合物和锡涂覆的金属基底是阴极保护的，只要涂覆的金属基底与第一导电容器接触即可。 第二阶段包括通过将适度的阳极电流施加到第二导电容器上，例如去除锡涂层。 罐，鼓等。 这种电流导致锡从衬底金属中的选择性去除。 第二导电容器和锡罐在该过程中用作阳极，并且将去除的锡电镀在阴极上。

公开(公告)号：US06836123B1

公开(公告)日：2004-12-28

申请号：US10122170

申请日：2002-04-15

申请人： Zhigang Qi ,  Chunzhi He ,  Arthur Kaufman

发明人： Zhigang Qi ,  Chunzhi He ,  Arthur Kaufman

IPC分类号： G01N2702

CPC分类号： H01M8/04194

摘要： A sensing device is featured that electrochemically measures methanol concentration. The sensing device has a flexible composite of layered materials wrapped about a flexible tube having aperture contact with a methanol flow stream. The layered materials sequentially wrapped on the tube are: a polytetrafluoroethylene insulation sheet; an electrically conducting mesh representing the anode current collector; a carbon-based material representing an anode diffusion medium; a catalyst-coated membrane with both sides coated by catalysts such as Pt/Ru and Pt; a carbon-based material serving as the cathode diffusion medium; and an electrically conducting mesh representing the cathode current collector.

摘要翻译： 传感装置的特点是电化学测量甲醇浓度。 感测装置具有缠绕在具有与甲醇流动流的孔径接触的柔性管的层状材料的柔性复合物。 依次包裹在管上的层状材料是：聚四氟乙烯绝缘片; 表示阳极集电器的导电网; 代表阳极扩散介质的碳基材料; 催化剂涂覆的膜，其两面涂覆有诸如Pt / Ru和Pt的催化剂; 用作阴极扩散介质的碳基材料; 以及表示阴极集电器的导电网。

公开(公告)号：US20060042957A1

公开(公告)日：2006-03-02

申请号：US10928302

申请日：2004-08-27

申请人： Chunzhi He

发明人： Chunzhi He

IPC分类号： B01D61/42 ,  C02F1/461

CPC分类号： B01J47/08 ,  B01J21/18 ,  B01J23/42 ,  C02F1/4695

摘要： Methods are disclosed for the electrodeionization and removal of at least some of at least one type of ion from an ion-containing particulate material comprising passing a direct current for a sufficient time between (a) an anode and (b) a cathode, wherein the anode and the cathode are both in electrical contact with an aqueous slurry of the particulate material, wherein the anode is in electrical contact with an anion exchange membrane and wherein the cathode is in electrical contact with a cation exchange membrane, thereby causing the removal of at least some of the at least one type of ion to be removed from the particulate material. Also disclosed are devices for the electrodeionization and removal of at least some of at least one type of ion from an ion-containing particulate material.

摘要翻译： 公开了用于从含离子的颗粒材料去除和去除至少一种类型的离子的方法，包括在（a）阳极和（b）阴极之间传递直流电流足够的时间，其中 阳极和阴极都与颗粒材料的水性浆料电接触，其中阳极与阴离子交换膜电接触，并且其中阴极与阳离子交换膜电接触，从而导致在 要从颗粒材料中去除的至少一种类型的离子中的至少一种。 还公开了用于从含离子的颗粒材料去离子和去除至少一种类型的离子的至少一些的装置。

公开(公告)号：US06730424B1

公开(公告)日：2004-05-04

申请号：US10097216

申请日：2002-03-14

申请人： Chunzhi He ,  Zhigang Qi ,  Arthur Kaufman

发明人： Chunzhi He ,  Zhigang Qi ,  Arthur Kaufman

IPC分类号： H01M804

CPC分类号： H01M8/04089 ,  H01M8/04186 ,  H01M8/1011 ,  H01M2008/1095 ,  Y02E60/523

摘要： A method is described for improving the performance of fuel cells such as H2/air PEM fuel cells and direct methanol fuel cells. It has been discovered that H2 evolution can significantly improve the performance of air cathodes and direct methanol fuel cell anodes. The improvement of air cathodes applies to both H2/air PEM fuel cells and direct methanol fuel cells.

摘要翻译： 描述了一种用于改善诸如H 2 /空气PEM燃料电池和直接甲醇燃料电池的燃料电池的性能的方法。 已经发现，H2进化可以显着提高空气阴极和直接甲醇燃料电池阳极的性能。 空气阴极的改进适用于H2 /空气PEM燃料电池和直接甲醇燃料电池。