Detecting Li Dendrites in a Two‐Electrode Battery System
Abstract
The use of high‐energy‐density Li metal anodes in rechargeable batteries is not possible because of dendrite formation that can potentially result in a battery fire. Although so‐called dendrite‐free Li metal anodes have been reported in many recent publications, Li dendrite growth is still kinetically favorable and it remains a severe safety concern in mass production. Here, a detection system capable of alerting for Li dendrite formation in a two‐electrode battery with no additional electrodes required is reported. When dendrites contact a red phosphorous‐coated separator, dendrite growth is revealed by a significant voltage change. This can activate a signal through the battery management system, warning of the presence of Li dendrites and leading to shutdown of the battery before the dendrites become dangerous.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 13, 2019
- Source ID
- 10.1002/adma.201807405
Entities
People
- James Tour
- Rodrigo Villegas Salvatierra
- Tuo Wang
Organizations
- Air Force Office of Scientific Research
- Rice University