New zinc metal batteries can be cheap, efficient, durable, safe and environmentally friendly

The world needs cheap and powerful batteries that can store sustainably produced electricity from wind or sunlight so that we can use it whenever we need it, even when it's dark outside or there's no wind blowing. Most common batteries that power our smartphones and electric cars are lithium-ion batteries. These are quite expensive because worldwide demand for lithium is soaring, and these batteries are also highly flammable.

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