Electropolymerized polythiophene photoelectrodes for photocatalytic water splitting and hydrogen production
By Kao, Emmeline; Liang, Qiaohao; Bertholet, Goran Rez-Kallah; Zang, Xining; Park, Hyun Sung; Bae, Jinwoo; Lu, Jianan; Lin, Liwei
Published in Sensors and Actuators A: Physical
2018
Abstract
We present thiopene-based devices fabricated via spin-coating and electropolymerization (EP) for usage in solar-powered, photocatalytic hydrogen gas (H2) harvesting. Two innovative claims are achieved in this work: (1) demonstration of electropolymerized photoelectrochemical (PEC) devices for water splitting, and (2) drastically improved performance of EP-PEC devices over spin-coated PEC hydrogen harvesters, achieving >0.5 V improvement in onset voltage (Von, bias voltage needed to produce photocurrent), with Von of 0 V vs. Ag/AgCl. As such, this work points to new opportunities for material and device fabrication for cheaper and efficient PEC hydrogen-harvesting systems.
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