公开(公告)号：US3650837A

公开(公告)日：1972-03-21

申请号：US3650837D

申请日：1970-04-06

Applicant: LEESONA CORP

Inventor： PALMER NIGEL J

IPC: H01M12/08 ,  H01M29/02

CPC classification number: H01M12/08 ,  Y02E60/128

Abstract: An electrically rechargeable metal/air or metal/oxygen depolarized electrochemical cell and a method of generating electricity therefrom are described. The electrochemical cell comprises an anode capable of being regenerated and a composite cathode having an oxygen-permeable, hydrophobic member layered with catalyst and a bi-porous unit. The coarse pore layer of the bi-porous unit is in contact with the catalyst. A bubble barrier which can be integral with either the anode or composite cathode is in contact with the fine pore layer of the bi-porous unit. During discharge of the cell, the bi-porous unit is flooded with electrolyte and merely acts as a current collector. When charging, oxygen evolution occurs at the fine pore layer and, due to the bubble barrier, the evolved oxygen is forced into the coarse pore layer displacing the electrolyte, thereby protecting the catalyst layer from damage due to oxygen evolution and the high charging potential.

Abstract translation: 描述了电可再充电金属/空气或金属/氧去极化电化学电池及其发电方法。 电化学电池包括能够再生的阳极和具有与催化剂层叠的透氧疏水构件和双孔单元的复合阴极。 双孔单元的粗孔层与催化剂接触。 可以与阳极或复合阴极成一体的气泡屏障与双孔单元的细孔层接触。 在电池放电期间，双孔单元充满电解质，仅用作集电器。 当充电时，在细孔层发生氧析出，并且由于气泡阻挡，放出的氧被迫进入置换电解质的粗孔层，从而保护催化剂层免受由析氧和高充电电势的损害。