| http://www.w3.org/ns/prov#value | - As a specific example of such a cathode material, an element belonging to Group 1 or Group 2 in the periodic table, that is, an alkali metal such as lithium (Li) or cesium (Cs), an alkaline earth metal such as magnesium (Mg), calcium (Ca), or strontium (Sr), an alloy including these metals (MgAg, AlLi) can be employed.
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