Epitaxial Co(OH)₂ Deposited onto Au/n-type Si

Caleb Holtmeyer

Department

Chemistry

Major

Chemistry

Research Advisor

Switzer, Jay A., 1950-

Advisor's Department

Chemistry

Funding Source

Missouri S&T Opportunity for Undergraduate Research Experiences (OURE) Program

Abstract

Co(OH)2 electrodeposited onto Au coated n-type Si is an effective catalyst for the oxygen evolution reaction(OER) in photoelectrochemical (PEC) water splitting. The n-type Si acts as a light absorber and the Au film prevents oxidation of Si from the basic PEC water splitting solution. Co(OH)2 can be deposited using potentiostatically, where potential is controlled and current measured, or galvantostatically, where current is controlled and potential is measured. The Co(OH)2 films are characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Measurements are made during PEC water splitting to determine the efficiency and stability of the cells.

Biography

Caleb Holtmeyer is a chemistry student pursuing a Bachelor’s of Science at Missouri University of Science and Technology. This is his third year at Missouri S&T and plans to graduate in the spring of 2017. After graduation he hopes to attend graduate school. He is an active member of the Missouri S&T climbing club.

Research Category

Sciences

Presentation Type

Oral Presentation

Document Type

Presentation

Location

Ozark Room

Presentation Date

11 Apr 2016, 9:00 am - 9:30 am

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Apr 11th, 9:00 AM Apr 11th, 9:30 AM

Epitaxial Co(OH)₂ Deposited onto Au/n-type Si

Ozark Room

Co(OH)2 electrodeposited onto Au coated n-type Si is an effective catalyst for the oxygen evolution reaction(OER) in photoelectrochemical (PEC) water splitting. The n-type Si acts as a light absorber and the Au film prevents oxidation of Si from the basic PEC water splitting solution. Co(OH)2 can be deposited using potentiostatically, where potential is controlled and current measured, or galvantostatically, where current is controlled and potential is measured. The Co(OH)2 films are characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Measurements are made during PEC water splitting to determine the efficiency and stability of the cells.