Dendrite formation in solid-state batteries arising from lithium plating and electrolyte reduction
Source abstract
Abstract
All-solid-state batteries offer high-energy-density and eco-friendly energy storage but face commercial hurdles due to dendrite formation, especially with lithium metal anodes. Here we report that dendrite formation in Li/Li7La3Zr2O12/Li batteries occurs via two distinct mechanisms, using non-invasive solid-state nuclear magnetic resonance and magnetic resonance imaging. Tracer-exchange nuclear magnetic resonance shows non-uniform Li plating at electrode-electrolyte interfaces and local Li+ reduction at Li7La3Zr2O12 grain boundaries. In situ magnetic resonance imaging reveals rapid dendrite formation via non-uniform Li plating, followed by sluggish bulk dendrite nucleation from Li+ reduction, with an intervening period of stalled growth. Formation of amorphous dendrites and subsequent crystallization, the defect chemistry of solid electrolytes and battery operating conditions play a critical role in shaping the complex interplay between the two mechanisms. Overall, this work deepens our understanding of dendrite formation in solid-state Li batteries and provides comprehensive insight that might be valuable for mitigating dendrite-related challenges.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced Battery Technologies Research
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References (40)
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