A recent study highlights that excessive discharge negatively impacts electric vehicle (EV) batteries, revealing a mechanism that leads to oxygen loss in layered oxide cathodes at voltages below 3.0V. This finding suggests that setting appropriate discharge cut-off voltages (DCOVs) could slow degradation and enhance battery life. While focused on EV batteries, the research raises questions about similar effects in lithium-ion batteries used in smartphones and laptops. Striking a balance between runtime and longevity is crucial for all rechargeable batteries, as many devices dip below the damaging discharge threshold.
Excessively discharging batteries harms them; the study emphasizes setting appropriate discharge cut-off voltages to slow degradation and improve battery longevity in EVs.
The research identifies a mechanism of oxygen loss in lithium-ion batteries which occurs during discharge below 3.0V, a detail crucial for optimizing battery usage.
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