| 摘要 |
To provide improved protection for a sodium sulphur cell against possible leakage from a neighbouring cell, the metal casing 13 of each cell in a battery has an outer coating 15 of a particulate non-inflammable filler material, preferably a flaky material such as graphite, talc, molybdenum disulphide or mica, which is inert to hot sodium and hot sulphur/sodium polysulphides, the particles of the material being bonded together with sodium silicate. <IMAGE> |
