Effect of noble metal addition on electrochemical polarization behavior of H{sub 2} oxidation and O{sub 2} reduction on 304 SS in high temperature water
Conference
·
OSTI ID:350091
- General Electric Corporate Research and Development Center, Schenectady, NY (United States)
The effect of noble metal addition on the polarization behavior of hydrogen (H{sub 2}) oxidation and oxygen (O{sub 2}) reduction on 304 stainless steel (SS) in high temperature, high purity water was studied. It is evident that the incorporation of small amounts of noble metals dramatically improves the hydrogen oxidation kinetics and thus enhances the catalytic recombination efficiency of H{sub 2} to O{sub 2}, to form H{sub 2}O. The enhancement in the catalytic nature on 304 SS surface doped with noble metals results in a thermodynamically lowest electrochemical corrosion potential (ECP) value (< {minus}500 mV{sub SHE}) when a stoichiometric or higher amount of hydrogen is present in the water.
- OSTI ID:
- 350091
- Report Number(s):
- CONF-980316--
- Country of Publication:
- United States
- Language:
- English
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