Abstract
Portable electronic devices are an essential part of life. Cell phones, laptops, and tablets are just a few that we use on the go. What makes these devices portable? They use lithium-ion batteries! Lithium-ion batteries are rechargeable and last a long time. But when a lithium-ion battery overheats (known as thermal runaway), it can result in fire or even an explosion. This releases small particles that people in the area can inhale. We wanted to know how these inhaled particles affect lung cells. We caused several batteries to experience thermal runaway and examined the particles emitted. We collected these particles on special filters. Then we exposed lung cells to these collected particles. We found that lithium-ion batteries release mixtures of toxic gases and particles that may contain heavy metals. We learned that these mixtures cause cell stress and DNA damage if people are exposed to and inhale them. These exposures and associated effects can potentially cause lung injury.
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