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Harvesting sustainable energy opens new avenues for powering portable electronic devices using triboelectric nanogenerators (TENGs). Synthetic metals and polymers are used to construct most of the TENGs. Hence, ultrathin, free‐standing, translucent, and chemically bonded chitosan (CH)‐ and alginate (AL)‐based biopolymeric films are introduced here. These films are fabricated using a low‐cost and environmentally...
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