Researchers at the University of Limerick have announced the development of the world's first prototype battery that utilizes two cations simultaneously. Compared to traditional batteries, this new technology is not only cheaper but also more environmentally friendly.
Typically, in traditional batteries, charging and discharging occur through the movement of only one cation between electrodes. The technique developed by the scientists allows lithium and sodium ions to move together in an electrolyte. Sodium remains the primary component, while lithium acts as a "capacity enhancer."
According to project leader Hugh Guiney, Associate Professor in the Department of Chemical Sciences, this combination enables sodium-ion batteries to exceed their standard charge capacity, making them more competitive with lithium-ion batteries. Laboratory tests have shown that the prototype battery can withstand 1,000 charge cycles.
The researchers believe this technology will pave the way for safer, more affordable batteries that are less reliant on lithium. They currently plan to test other ion combinations, including lithium-magnesium and potassium-lithium pairs, along with silicon anodes, which could further improve battery capacity and lifespan.
