Researchers invented water-based batteries that store more energy than lithium-ion

Chinese scientists have created a new type of water-based battery that is more efficient at storing energy than standard lithium-ion batteries. The new battery type is also supposedly safer than lithium-ion based batteries, the researchers claim. The team shared their findings on the new battery type in a study published in Nature Energy in late April. One of the most important discoveries surrounding the new batteries is that they are much more energy-dense.

Normally, water batteries like this are much safer due to their lower energy density, as they have a narrower voltage window in which they can operate. However, by adding bromide to the electrolyte solution used in their water battery, the researchers have greatly increased the energy it can hold without removing any of the safety that these batteries offer.

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