Onboard early detection and mitigation of lithium plating in fast-charging batteries

• DOI: 10.1038/s41467-022-33486-4
• Publication Date: 2022-11-19T06:03:01Z
• Authors: Wenxiao Huang; Yusheng Ye; Hao Chen; Rafael A. Vilá; Andrew Xiang; Hongxia Wang; Fang Liu; Zhiao Yu; Jinwei Xu; Zewen Zhang; Rong Xu; Yecun Wu; Lien-Yang Chou; Hansen Wang; Junwei Xu; David Tomas Boyle; Yuzhang Li; Yi Cui
• Keywords: Plating (geology); State of charge

Fast-charging is considered as one of the most desired features needed for lithium-ion batteries to accelerate mainstream adoption electric vehicles. However, current battery charging protocols mainly consist conservative rate steps avoid potential hazardous lithium plating and its associated parasitic reactions. A highly sensitive onboard detection method could enable fast-charging without reaching regime. Here, we demonstrate a novel differential pressure sensing precisely detect event. By measuring real-time change cell per unit charge (dP/dQ) comparing it with threshold defined by maximum dP/dQ during intercalation into negative electrode, onset before extensive growth can be detected high precision. In addition, show that integrating this management system (BMS), dynamic self-regulated protocol realized effectively extinguish triggered low temperature (0 °C) while conventional static leads catastrophic at same condition. We propose serve an early nondestructive diagnosis guide development technologies.