After oxygen, silicon is the most abundant element in the Earth’s crust. Its reserves are practically inexhaustible and it is cheap. When researchers look at an alternative to the current lithium-ion battery, it makes sense that they turn to silicon. Silicon-air batteries are not only smaller and lighter than their lithium-ion counterparts, but also have a much higher energy density. In addition, they are insensitive to external influences and environmentally friendly. Thus far, they have however only achieved relatively short running times.
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