Chinese scientists develop ‘injection’ to make smartphone and EV batteries last longer

Chinese scientists have developed a revolutionary repair technology that could make lithium-ion batteries last over six times longer.

Announcing their discovery in the journal Nature on Wednesday, the researchers said this low-cost, eco-friendly technology could soon be ready to enter the market.

The batteries are key for many modern technologies, from smartphones to electric vehicles. However, as these batteries age, they often become less efficient – a process that cold weather accelerates.

The researchers said they could counter this problem with the “injection” of a special solution to rejuvenate “sick” batteries.

At present, lithium-ion batteries rely on sophisticated materials used to generate lithium ions – whose movement through electrolyte is key to their performance – and then protect them to ensure a decent lifespan.

Typically these lithium ions move from the positive terminal to the negative when the battery is charging, a process which is then reversed when it is generating power.