High Safety Fuel Cells Based on Gas Diffusion Layer Suppressed Uneven Current and Thermal Runaway

• DOI: 10.1002/adfm.202414081
• Publication Date: 2024-10-22T12:52:27Z
• Authors: Fandi Ning; Xingyu Zhu; Yiyang Liu; Ali Hammad; Jiahao Huang; Zhi Chai; Min Shen; Can He; Qinglin Wen; Xiong Dan; Wei Li; Bin Tian; Lei He; Xiaochun Zhou
• Keywords: Thermal Runaway

Abstract Thermal runaway poses a critical safety concern for fuel cells, significantly impairing their performance and durability. Uneven current often leads to uneven temperature, exacerbating the risk of thermal runaway. The inadequate electrical conductivity gas diffusion layer (GDL) is identified as primary cause issues. To address this, multilayer composite (MC‐GDL) proposed designed enhance both conductivity. in‐plane MC‐GDL reaches an impressive 9.1 × 10 4 S m −1 . Under extreme current, cell's with only declines by 3.7%, compared substantial 58.1% decline observed commercial GDL. Additionally, notably high at 337.0 W K maximum temperature Nafion membrane in cell equipped 84.2 °C lower than 180.7 Consequently, effectively prevents melting, thinning, perforation membrane, thereby mitigating Furthermore, superior can other electrochemical devices minimizing