Critical Role of Thermomechanical Properties of Sulfur-Rich Polymers in Triboelectric Nanogenerators
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초록
내용
Elemental sulfur is a byproduct of petroleum refining processes, generating a surplus of 7 million tons annually. This surplus causes land waste and environmental pollution, so it is urgent to deal with it. Due to the high electron affinity of sulfur, sulfur-rich polymer (SRP) has been used as a negatively chargeable friction layer in triboelectric nanogenerators (TENGs) in previous reports. In this study, we enhanced TENG performance by inducing a high surface charge density. By adjusting the sulfur content of SRP, we controlled the thermomechanical properties of SRP including the glass transition temperature, storage modulus, and thereby scale of surface charge density. Consequently, open-circuit voltage output performance of TENG reached remarkable 436 V with a magnitude of 6.25 cm2 without corona discharge or environmentally harmful fluorine coating.