Low‐Temperature Potassium Batteries Enabled by Electric and Thermal Field Regulation

• DOI: 10.1002/anie.202300016
• Publication Date: 2023-02-21T14:19:13Z
• Authors: Yanfang Liu; Yating Shi; Caitian Gao; Zude Shi; Hongbo Ding; Yanhong Feng; Yongmin He; Junwei Sha; Jiang Zhou; Bingan Lu
• Keywords: Deposition

Recharging batteries operate at sub-zero temperature is usually limited by the slow ion diffusion and uneven charge distribution low temperature. Here, we report a strategy to regulate electric field thermal simultaneously, creating fast uniform deposition surroundings for potassium in metal (PMBs). This regulation achieved using highly ordered 1D nanoarray electrode which provides dense flat surface uniforming high conductivity reducing fluctuation. Consequently, this could achieve high-areal capacity of 10 mAh cm-2 . Besides, dependence nucleation on unveiled. Furthermore, full-cell steady with over 80 % its room-temperature -20 °C. Those respectable performances demonstrate that valid, potentially providing guidelines rational design advanced electrodes toward PMBs.