Sodium-ion batteries are a promising energy storage technology, one that has already seen limited commercialization in the stationary storage segment. And sodium-ion has attracted plenty of attention from researchers, since it offers an alternative to lithium-ion batteries that relies on much cheaper, more abundant materials.
In terms of energy density, sodium-ion technology is a little way behind lithium. This means it is widely seen as impractical for applications such as electric vehicles or consumer electronics, where the size and weight of the battery are a primary concern. A new discovery from scientists at the Tokyo University of Science (TOS), however, could be set to turn this assumption on its head.
A group at the university looked to carbon electrode materials to boost sodium-ion battery capacity, and developed a technique to fabricate a porous, hard carbon anode. The technique is described in the paper New hard-carbon anode material for sodium-ion batteries will solve the lithium conundrum, published in Angewandte Chemie, International Edition.
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