"An improved charging protocol can help lithium-ion batteries last much longer," reports Science Daily:
The best commercial lithium-ion batteries have a lifespan of up to eight years. Batteries are usually charged with a constant flow of current. But is this the best method?
A new study from the team of Professor Philipp Adelhelm at the HZB and the Humboldt University of Berlin answers this question with a clear “no”.
Part of the battery testing was conducted at Aalborg University. Batteries were charged conventionally with constant current (CC) but also with a new charging protocol with pulsed current (PC).
Analyzes revealed clear differences after several charge cycles:
In the CC-charged samples, the solid electrolyte interface (SEI) at the anode was significantly thicker, which reduced the charging capacity. PC loading resulted in a thinner SEI interface and less structural changes in the electrode materials.
The study is published in the journal Advanced Energy Materials and analyzes the effect of the charging protocol on the operating time of the battery, according to the article “The frequency of the pulsed current counts…”
https://onlinelibrary.wiley.com/doi/10.1002/aenm.202400190
