China unveils ultra-cheap ‘all-iron flow battery’ for renewable energy storage

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Chinese scientists have achieved a breakthrough in “all-iron flow battery” technology that could sharply reduce the cost of storing renewable energy while significantly extending battery lifespan. Lithium costs over 80 times more than iron as a raw industrial material at present. An iron battery may offer a potential solution to one of the biggest bottlenecks in the global energy transition, according to the research...