| 摘要 |
A sodium-sulphur storage battery having improved gastightness is obtained by providing the negative and positive covers (2, 3), which are thermocompressively jointed to the upper and lower surfaces respectively of an alpha alumina ring (1), with diffusion layers of chrome over their surfaces and with coating layers of aluminium on at least the parts of their surfaces which are thermocompressively jointed. As oxidation of the jointing surfaces is minimal, the thermocompressively jointing of the negative and positive covers (2, 3) to the ring (1) can be carried out in air thereby facilitating production of the batteries. …<??>The covers (2,3) may be made from stainless steel, iron or alloy of iron and nickel. The chrome layers may be about 20 mu to 120 mu in thickness, and the aluminium layers may be about 5 mu to 90 mu in thickness. |
