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Buone notizie per gli utilizzatori incalliti di telefoni cellulari: è in arrivo una batteria che si ricarica completamente in un solo minuto. Gli accumulatori di ultima generazione sono stati messi a punto nell'Università californiana di Standford e descritti sulla rivista scientifica Nature.
I nuovi generatori, in alluminio, sono destinati a rimpiazzare le batterie tradizionali, comprese quelle al litio che vengono attualmente utilizzate per cellulari e computer portatili. Gli ideatori delle pile assicurano che esse avranno una durata maggiore e che saranno meno dannose per l'ambiente. Il prototipo ha sopportato 7'500 cicli di ricarica senza perdere potenza, mentre i vecchi accumulatori cominciano a mostrare segni di cedimento dalla centesima ricarica.
Non da ultimo, il costo dell'alluminio, inferiore a quello del litio, renderà il prodotto meno caro.
ANSA/CaL
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