Polyaniline nanofibers (PANI NFs) are introduced to construct a wind-driven triboelectric nanogenerator (TENG) as a new power source for self-powered cathodic protection. PANI NFs serve as a friction layer to generate charges by harvesting wind energy as well as a conducting layer to transfer charges in TENG. A PANI NFs-based TENG exhibits a high output performance with a maximum output voltage of 375 V, short current circuit of 248 μA, and corresponding power of 14.5 mW under a wind speed of 15 m/s. Additionally, a self-powered anticorrosion system is constructed by using a PANI-based TENG as the power source. The immersion experiment and electrochemical measurements demonstrate that carbon steel coupled with the wind-driven TENG is effectively protected with an evident open circuit potential drop and negative shift in the corrosion potential. The smart self-powered device is promising in terms of applications to protect metals from corrosion by utilizing wind energy in ambient conditions.

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引入了聚苯胺纳米纤维（PANI NFs），以构建风力驱动的摩擦电纳米发电机（TENG），作为自供电阴极保护的新动力源。PANI NF用作摩擦层，通过收集风能产生电荷，还充当导电层，以在TENG中传递电荷。基于PANI NFs的TENG具有很高的输出性能，在15 m / s的风速下，最大输出电压为375 V，短路电流为248μA，相应的功率为14.5 mW。另外，通过使用基于PANI的TENG作为电源来构造自供电防腐系统。浸没实验和电化学测量表明，碳钢与风驱动的TENG结合可有效保护，其开路电位明显下降，腐蚀电位产生负向偏移。

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