Low Cost Corrosion Resistant Water Oxidation Electrodes

ORAL

Abstract

Hydrogen gas produced via water splitting has the potential to be an energy source free of emissions. The oxidation half reaction of water splitting has a high energy cost and can be very corrosive towards inexpensive electrode materials and therefore, electrodes consisting of expensive and rare platinum are generally used. This research focuses on both deposition of fluorine doped tin oxide (FTO) as a layer imparting protection against corrosion for inexpensive electrode materials and lowering the overpotential associated with water oxidation using first row transition metal based catalysts. These FTO thin films were deposited onto stainless steel and glass via spray pyrolysis deposition technique employing dibutyltin diacetate or tin tetrachloride with ammonium bifluoride in 200 proof ethanol as the spray solution. Metal salts or metal nanoparticles were added to the spray solution for deposition with the FTO layer. The resultant thin films were characterized using UV-Vis-NIR transmission spectroscopy, two-point probe resistance measurements, scanning electron microscopy, energy dispersive X-ray spectroscopy, and linear sweep voltammetry. The thin film's corrosion resistance was tested via long-term electrolysis studies and coats lasted for as long as 94 days.

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Authors

  • Kelly Lambright

    Department of Chemistry and Biochemistry, University of Toledo

  • Mikhail Zamkov

    University of Notre Dame, University of Toledo, Case Western Reserve University, John Carroll University, Bowling Green State Univ, Materials Science and Technology Division, Oak Ridge National Laboratory, Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Ohio University, Shanghai Jiao Tong University, Department of Chemistry and Biochemistry, University of Toledo, Department of Chemical Engineering, University of Toledo, Wuhan University, Southeast University, Physics and Astronomy and Center for Photochemical Science, Bowling Green State University, Physics and Astronomy, University of Toledo, Air Force Research Laboratory, Physics and Astronomy, Bowling Green State University, Purdue University, Student/Supervisor, Student, None, University of Michigan, Dearborn, Clemson University, Michigan State University, Bowling Green State University, Physics Dep, Cleveland State University, Physical Therapy Program, Central Michigan State University

  • Mikhail Zamkov

    University of Notre Dame, University of Toledo, Case Western Reserve University, John Carroll University, Bowling Green State Univ, Materials Science and Technology Division, Oak Ridge National Laboratory, Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Ohio University, Shanghai Jiao Tong University, Department of Chemistry and Biochemistry, University of Toledo, Department of Chemical Engineering, University of Toledo, Wuhan University, Southeast University, Physics and Astronomy and Center for Photochemical Science, Bowling Green State University, Physics and Astronomy, University of Toledo, Air Force Research Laboratory, Physics and Astronomy, Bowling Green State University, Purdue University, Student/Supervisor, Student, None, University of Michigan, Dearborn, Clemson University, Michigan State University, Bowling Green State University, Physics Dep, Cleveland State University, Physical Therapy Program, Central Michigan State University

  • Dean Giolando

    Department of Chemistry and Biochemistry, University of Toledo, Department of Chemistry and Biochemistry, The University of Toledo