公开(公告)号：US3510355A

公开(公告)日：1970-05-05

申请号：US3510355D

申请日：1966-04-20

Applicant: LEESONA CORP

Inventor： FISHMAN JERRY HASKEL

IPC: H01M4/86 ,  H01M4/90 ,  H01M4/92 ,  H01M27/00

CPC classification number: H01M4/928 ,  H01M4/90 ,  H01M4/921 ,  H01M2004/8684 ,  H01M2004/8689 ,  H01M2300/0008

公开(公告)号：US3645860A

公开(公告)日：1972-02-29

申请号：US3645860D

申请日：1969-03-04

Applicant: LEESONA CORP

Inventor： FISHMAN JERRY HASKEL ,  HENRY JEAN FRANCOIS ,  TESSORE SUSANNE

IPC: C25D11/00 ,  B01J37/02 ,  C25B11/00 ,  C25B11/06 ,  C25D5/00 ,  C25D5/18 ,  H01L21/322 ,  H01M4/88 ,  H01M4/90 ,  C23B9/00 ,  C23B5/24

CPC classification number: H01M4/8807 ,  H01M4/8853 ,  H01M4/92

Abstract: A method for the preparation of an electrocatalyst which comprises (a) electrodepositing less than a complete monomolecular layer of material on a substrate utilizing cathodic polarization of short duration, and (b) oxidizing the electrodeposit and the substrate utilizing anodic polarization, also of short duration is described. The deposited material preferably is a metal or metal oxide having useful catalytic and/or electrical properties, e.g., platinum or gold. The substrate preferably is a metal or metal oxide such as tantalum oxide, tungsten oxide, or a sodium tungsten bronze, NaxWO3. The substrate is treated in an electrolyte containing a very dilute solution of the material to be deposited and/or in the presence of a counterelectrode containing this material. Several repetitions of these method steps, i.e., reversing the polarity such that the deposition and oxidation steps alternate, results in the complete or partial integration of minute portions of electrodeposited material in the substrate material. This method is useful for providing or improving catalytic activity in a substrate. The products produced by the method are useful in electrochemical devices.

Abstract translation: 一种用于制备电催化剂的方法，其包括（a）利用短持续时间的阴极极化在基板上电沉积小于完整的单分子层的材料，和（b）利用阳极极化氧化电沉积物和基板 被描述。 沉积材料优选是具有有用的催化和/或电性质的金属或金属氧化物，例如铂或金。 基板优选为金属或金属氧化物，例如氧化钽，氧化钨，或钨酸钠，NaxWO 3。 在包含待沉积材料的非常稀的溶液的电解液中和/或在含有该材料的反电极的存在下处理衬底。 这些方法步骤的几次重复，即反转极性使得沉积和氧化步骤交替，导致电沉积材料的微小部分在基底材料中的完全或部分整合。 该方法可用于提供或提高底物中的催化活性。 通过该方法生产的产品在电化学装置中是有用的。

公开(公告)号：US3553024A

公开(公告)日：1971-01-05

申请号：US3553024D

申请日：1967-02-20

Applicant: LEESONA CORP

Inventor： FISHMAN JERRY HASKEL

IPC: H01M4/86 ,  H01M12/06 ,  H01M13/00 ,  H01M27/00

CPC classification number: H01M4/86 ,  H01M12/065

Abstract: AN IMPROVED ELECTRODE FOR USE IN ELECTROCHEMICAL CELLS AND ELECTROCHEMICAL CELLS UTILIZING THE IMPROVED ELECTRODES ARE DESCRIBED. THE IMPROVEMENT RESIDES IN THE USE OF AN UNSINTERED POLYTETRAFLUOROETHYLENE FILM IN CONTRADISTINCTION TO A SINTERED POLYTETRAFLUOROETHYLENE FILM IN AN ELECTRODE CONSTRUCITON. THE UNSINTERED POLYTETRAFLUOROETHYLENE FILM IS ADJACENT A CATALYST LAYER. THE ELECTRODES PROVIDE ENHANCED ELECTROCHEMICAL PERFORMANCE AND STABILITY IN THE ELECTROCHEMICAL CELL.