Digital Twin Reveals the Impact of Carbon Binder Domain Distribution on Performance of Lithium‐Ion Battery Cathodes

• DOI: 10.1002/sstr.202400350
• Publication Date: 2024-10-14T07:48:36Z
• Authors: Seungsoo Jang; Yejin Kang; Hyeongseok Kim; Joonam Park; Kang Taek Lee
• Keywords: Carbon fibers

The rising demand for high‐performance lithium‐ion batteries (LIBs) emphasizes the need precise electrode design. carbon binder domain (CBD) within electrodes, crucial electron transport and structural integrity, can impede reduce electrochemically active sites. This study leverages digital twin technology to investigate impact of CBD distribution along thickness on LIB cathode performance. Virtual cathodes with varying configurations are generated, their performance using 3D heterogeneous electrochemical modeling is evaluated. results reveal that a steep gradient significantly diminishes charge capacity compared mild gradient, particularly at higher current rates. reduction attributed an increased tortuosity factor uneven activity, which adversely affect mass reaction dynamics. These effects more pronounced lower porosities loading levels. findings highlight optimizing critical advancing design enhancing