| 摘要 |
1513684 Sodium-sulphur cells ELECTRICITY COUNCIL 12 Feb 1975 42605/76 Divided out of 1513681 Heading H1B The Na-S cell is described in Specification 1513681, but the claims relate to the grooves on the external surface of the impermeable carbon or graphite tube which forms part of the current collector for the sulphur containing material. The grooves may be longitudinal, circumferential, helical or criss-cross and they may be filled with, e.g. alumina fibres. |
