Highly efficient photoelectrochemical hydrogen generation using a Pt-MoS2/Si nanowire array

• Main Authors: Sheng-Ta Ho, 何昇達
• Other Authors: Wen-Jauh Chen
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/58608101617012469233

碩士 === 國立雲林科技大學 === 材料科技研究所 === 103 === A photoelectrochemical cell (PEC) with a structure of modified Si nanowire anode/K2SO4.H2SO4 (pH=1)/Pt cathode was prepared and studied。The Si nanowires were first formed by immersing p-Si chip in an etching solution of HF + AgNO3 and Pt nanoparticle (NPs) and MoS2 nanoparticles were deposited on the surface of Si nanowires。The modified anode was characterized by a scanning electron microscope for the surface and cross section view, and by anTransmission electron microscopefor the morphology and structure。The properties of the photoelectrochemical cell were measuredcurrent density andelectrochemical impedance spectroscopy under standard AM 1.5 simulated sunlight (100mW/cm2)。The result showed that PEC devices produce cathodic current densities (J) of 7.21 and 14.3mA/cm2 were ƞ=0mV and ƞ=200mV,respectively。