| 摘要 |
A composition for the transport and storage of heat energy, which comprises alkali metal polysulfides of the formula (Me1(1-x),Me2x)2Sz, where Me1 and Me2 are selected from the group of alkali metals consisting of lithium, sodium, potassium, rubidium and cesium, Me1 is different from Me2 and x is from 0 to 1 and z is from 2.3 to 3.5.
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