New atom-thick filter boosts EV battery life over 150 charge cycles

Researchers from the University of Florida, Purdue University, and Vanderbilt University have developed an atom-thick graphene filter that significantly improves lithium–sulfur battery performance by blocking sulfur chains that typically degrade battery life. This microscopic filter allows lithium ions to pass freely while preventing bulky sulfur chains from clogging the battery, thereby maintaining stable energy output over more than 150 charge-discharge cycles. The filter is created using chemical vapor deposition, producing a graphene film with precisely sized openings tailored to lithium ions. Lithium–sulfur batteries are known for their high energy density and lightweight nature, making them ideal for electric vehicles (EVs), drones, and portable electronics. However, their practical use has been limited due to sulfur chain formation, which reduces battery efficiency. This new atomic-level engineering breakthrough addresses that issue, potentially enabling longer-lasting batteries that could extend EV range and reduce weight challenges in larger transport modes like trucks, trains, and ships. While still in the research phase, the innovation marks a significant step