| 摘要 |
<p>An oxide cathode comprising a metal base substantially consisting of titanium (11, 20, 30) and a heating element (13, 22, 23, 32, 33, 34. 35) for heating said base, on which base a porous layer (12, 21, 31) comprising an alkaline earth metal oxide is provided, enables a comparatively low operating temperature and/or a short warming up time and/or a small supplied power to be used.</p> |
