The latest work by the Chair of Electrical Energy Storage Technology, titled “Cycling Aging in Different State of Charge Windows in Lithium-Ion Batteries with Silicon-Dominant Anodes” has been published in the Journal of the ECS - The Electrochemical Society. 🔋 👨🔬
The full article is available as open access: https://iopscience.iop.org/article/10.1149/1945-7111/ad71f8
Highlights of the work:
💡 Significant lifetime improvement by operating cells with silicon-dominant anodes in high full-cell SoCs (i.e., 50-100% SoC)
→ the anode’s end of discharge potential is a function of the SoH
→ the charge-averaged full-cell potential is a function of the SoH
💡 Cell resistance is dominated by the silicon-dominant anode, especially over aging and is also a function of the SoH
💡 Loss of lithium inventory (LLI) is the main aging mechanism
💡 Highest anode expansion for highest anode lithiation
This research provides valuable insights for optimizing the lifespan of lithium-ion batteries with silicon-dominant anodes.