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

Científicos generan electricidad del aire húmedo con filtros de cigarrillos y baterías usadas

SCIENCE X

Un estudio revisado por pares en Scientific Reports describe un generador flexible y delgado como papel que produce electricidad a partir de la humedad del aire, fabricado con residuos: tallos de caña silvestre, filtros de cigarrillos desechados, pasta de carbono de pilas gastadas, sal de mesa y papel de aluminio. Una sola unidad genera hasta 1,16 voltios con un 65% de humedad; cuatro unidades en serie encendieron un LED pequeño durante más de tres horas sin condensador.

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