A flexible, paper-thin generator, built entirely from waste materials — wild sugarcane stalks, discarded cigarette filters, carbon paste from spent dry-cell batteries, table salt, and aluminum foil. One single unit generates up to 1.16 volts at 65% humidity; four units in series powered a small LED for over three hours without a capacitor.
(c) Jose Gabriel Ortega Castro

Scientists generate electricity from humid air using cigarette filters and dead batteries

SCIENCE X

A flexible, paper-thin generator, built entirely from waste materials — wild sugarcane stalks, discarded cigarette filters, carbon paste from spent dry-cell batteries, table salt, and aluminum foil. One single unit generates up to 1.16 volts at 65% humidity; four units in series powered a small LED for over three hours without a capacitor.

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