Scientists at Yale University have created a new type of battery that is significantly more breathable than cotton. This is achieved by incorporating a pattern of long, rectangular holes into a flexible lithium battery pouch. The holes allow for better heat dissipation and airflow, preventing discomfort and sweat buildup when integrated into clothing.
The rectangular hole pattern was chosen after simulations demonstrated its superior performance compared to square or circular holes in terms of stretchability and durability. The design balances mechanical flexibility with high energy density, allowing the battery to be stretched by 10% or folded 180 degrees repeatedly without failure. Testing showed the battery maintained functionality even under these conditions and outperformed cotton in breathability tests.
The researchers successfully integrated the battery into a lab coat, demonstrating its practicality in wearable applications. Future plans include more extensive wear-and-tear testing in commercial health monitoring devices and sports gear. They also aim to optimize the manufacturing process to ensure consistent hole placement and prevent leaks or short circuits.