Rechargeable paper battery is cheaper, safer & as powerful as lithium

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energy density at 226 Wh/kg, which falls comfortably within the range of existing lithium tech.
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battery chemistry relies on cellulose, the structural plant material used to make paper, as the medium for ion transfer between the anode and cathode. Flint then replaces problematic non-renewables like cobalt and lithium with less environmentally impactful, easily recycled metals like zinc and manganese.
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the company believes it can eventually build its batteries for roughly US$50/kWh, less than half the average 2024 cost of lithium-ion. That's thanks largely to the use of those abundantly available sustainable materials and metals that are easier and less costly to mine than traditional battery metals.
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Flint claims its cellulose-based battery is significantly safer and more stable than lithium, virtually eliminating the chance of catastrophic fire. The water-based electrolytes are stable and non-toxic and formulated to prevent overheating, sparking and explosion.
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