From Fundamental Understanding to Engineering Design of High‐Performance Thick Electrodes for Scalable Energy‐Storage Systems

• DOI: 10.1002/adma.202101275
• Publication Date: 2021-05-24T12:55:22Z
• Authors: Jingyi Wu; Xiao Zhang; Zhengyu Ju; Lei Wang; Zeyu Hui; Karthik Mayilvahanan; Kenneth J. Takeuchi; Amy C. Marschilok; Alan C. West; Esther S. Takeuchi; Guihua Yu
• Keywords: Power density; Specific energy

Abstract The ever‐growing needs for renewable energy demand the pursuit of batteries with higher energy/power output. A thick electrode design is considered as a promising solution high‐energy due to minimized inactive material ratio at device level. Most current research focuses on pushing thickness maximum limit; however, very few them thoroughly analyze effect cell‐level densities well balance between and power density. Here, realistic assessment combined other key parameters provided, such active fraction porosity, which affect lithium–LiNi 0.6 Mn 0.2 Co O 2 (Li–NMC622) lithium–sulfur (Li–S) cells two model battery systems, provided. Based state‐of‐the‐art lithium batteries, targets are quantified achieve 500 Wh kg –1 /800 L strategies elaborated simultaneously enhance Furthermore, remaining challenges highlighted toward realizing scalable high‐energy/power energy‐storage systems.