The latest work from the Chair of Electrical Energy Storage Technology on "External Short-Circuit Scenarios under Different Mechanical Pressures Applied to Lithium-Ion Cells with Silicon-Dominant Anodes" has been published in the Journal of the Electrochemical Society. 🔋 👨‍🔬

The full article is available as open access: https://iopscience.iop.org/article/10.1149/1945-7111/ad9355

Highlights of the work include:

• Quantitative correlation between decreasing impedance and higher short-circuit current for higher mechanical pressure
• Quantitative translation of increasing short-circuit current leading to more initial heat generation rates for higher pressures
• LiRE indicates copper dissolution due to high anode potentials for all SLPs, which was confirmed via SEM, EDX, and XPS on anode and cathode samples from all SLPs; in addition, copper deposition was shown at different positions in the glass fiber separator via XPS.
• Copper dissolution accounts for a part of the over-discharge capacity but does not fully account for the measured over-discharge capacity.