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Australia’s Sun Cable project deployed the world’s largest zinc-ion battery (450MWh) in May 2024. Breakthroughs include:
Neutral pH electrolyte (non-flammable, non-toxic)
MnO₂ cathodes with zinc-aluminum alloy anodes
3-second response time for grid stabilization
Performance metrics:
▶️ 40-year lifespan (2× lithium-ion)
▶️ $76/kWh installed cost
▶️ Zero thermal runaway risk
The system powers Darwin with 100% renewable energy during nighttime peaks. Six new global projects (>1GWh) are now underway.
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