Not just catching up fire or exploding as you sleep next to them, dozens of dangerous gases are being produced by the batteries found in billions of consumer devices like smartphones and tablets, scientists have warned. The team has identified more than 100 toxic gases released by lithium-ion batteries, including carbon monoxide, which can cause strong irritations to the skin, eyes and nasal passages and harm the wider environment.
According to the researchers from the Institute of NBC Defence and Tsinghua University in China, many people may be unaware of the dangers of overheating, damaging or using a disreputable charger for their rechargeable devices.
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“Nowadays, lithium-ion batteries are being actively promoted by many governments all over the world. The lithium-ion battery is used by millions of families, so it is imperative that the general public understand the risks behind this energy source,” said Jie Sun, lead author and professor at the Institute of NBC Defence.
The dangers of exploding batteries have led manufacturers to recall millions of devices.
But the threats posed by toxic gas emissions and the source of these emissions are not well understood.
Sun and her colleagues identified several factors that can cause an increase in the concentration of the toxic gases emitted.
For example, a fully charged battery will release more toxic gases than a battery with 50 per cent charge.
The chemicals contained in the batteries and their capacity to release charge also affected the concentrations and types of toxic gases released.