Fast charging of lithium-ion batteries at all temperatures
Abstract
Range anxiety is a key reason that consumers are reluctant to embrace electric vehicles (EVs). To be truly competitive with gasoline vehicles, EVs should allow drivers to recharge quickly anywhere in any weather, like refueling gasoline cars. However, none of today's EVs allow fast charging in cold or even cool temperatures due to the risk of lithium plating, the formation of metallic lithium that drastically reduces battery life and even results in safety hazards. Here, we present an approach that enables 15-min fast charging of Li-ion batteries in any temperatures (even at -50 °C) while still preserving remarkable cycle life (4,500 cycles, equivalent to >12 y and >280,000 miles of EV lifetime), thus making EVs truly weather-independent.
- Publication:
-
Proceedings of the National Academy of Science
- Pub Date:
- July 2018
- DOI:
- 10.1073/pnas.1807115115
- Bibcode:
- 2018PNAS..115.7266Y