| 摘要 |
<p>A primary electrochemical cell (1) of a design for reducing parasitic self-discharge of the cell during storage and subsequent discharge of the cell. The cell (1) includes a tubular porous carbon cathode structure (6) within a metal housing (4) of the cell (1) and spaced from an anode structure (10) by an insulative separator material (8). The carbon cathode structure (6) and the anode structure (10) are exposed to an electrolytic solution (3) including a reducible soluble cathode (e.g., thionyl chloride) which is catalytically reduced during discharge of the cell (1) at the surface of the carbon cathode structure (6). The anode structure (10) includes an elongated, cylindrical, lithium member (10a) located centrally within, and spaced from, the housing (4), and an electrically-conductive metal assembly (10b and 10f) at the potential of the lithium electrode (10a) and connected between the lithium electrode (10a) and a feedthrough member (12) provided in a top cover (15) for the housing (4). All or portions of the electrically-conductive metal assembly (10b and 10f), as well as the feedthrough member (12), are selectively covered with a sufficiently chemically-stable, catalytically-inert anti-parasitic discharge material (10h) for preventing the undesirable catalytic reduction of the soluble cathode at the surfaces of the electrically-conductive metal assembly (10b and 10f) and feedthrough member (12) covered by the anti-parasitic discharge material (10h).</p> |
