Triboelectrification based on double-layered polyaniline nanofibers for self-powered cathodic protection driven by wind
polyaniline, triboelectric nanogenerator, wind-driven, self-powered, cathodic protection
ABSTRACT 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 A, 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.
Tsinghua University Press
Siwen Cui,Youbin Zheng,Jun Liang,Daoai Wang, Triboelectrification based on double-layered polyaniline nanofibers for self-powered cathodic protection driven by wind. NanoRes.2018, 11(4): 1873–1882