Fast charging of lithium-ion batteries at all temperatures

Xiao-Guang Yang, Guangsheng Zhang, Shanhai Ge, Chao-Yang Wang

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Fast charging is a key enabler of mainstream adoption of electric vehicles (EVs). None of today’s EVs can withstand fast charging in cold or even cool temperatures due to the risk of lithium plating. Efforts to enable fast charging are hampered by the trade-off nature of a lithium-ion battery: Improving low-temperature fast charging capability usually comes with sacrificing cell durability. Here, we present a controllable cell structure to break this trade-off and enable lithium plating-free (LPF) fast charging. Further, the LPF cell gives rise to a unified charging practice independent of ambient temperature, offering a platform for the development of battery materials without temperature restrictions. We demonstrate a 9.5 Ah 170 Wh/kg LPF cell that can be charged to 80% state of charge in 15 min even at −50 °C (beyond cell operation limit). Further, the LPF cell sustains 4,500 cycles of 3.5-C charging in 0 °C with 12 y and >280,000 miles of EV lifetime under this extreme usage condition, i.e., 3.5-C or 15-min fast charging at freezing temperatures.
Original languageEnglish (US)
Title of host publicationProceedings of the National Academy of Sciences
Pages7266-7271
Number of pages6
DOIs
StatePublished - Jul 10 2018

Publication series

NameProceedings of the National Academy of Sciences
Volume115

Fingerprint Dive into the research topics of 'Fast charging of lithium-ion batteries at all temperatures'. Together they form a unique fingerprint.

Cite this