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http://dx.doi.org/10.7316/KHNES.2012.23.2.117

Study on the Electrode Characteristics for the Alkaline Water Electrolysis  

Choi, Ho-Sang (Dep. Chemical Engineering, Kyungil University)
Yim, Doo-Soon (Grad. School, Dep. Grenn Energy, Hoseo University)
Rhyu, Cheol-Hwe (Grad. School, Dep. Grenn Energy, Hoseo University)
Kim, Jae-Chul (Grad. School, Dep. Grenn Energy, Hoseo University)
Hwang, Gab-Jin (Grad. School, Dep. Grenn Energy, Hoseo University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.23, no.2, 2012 , pp. 117-124 More about this Journal
Abstract
Alkaline electrolysis needs the electrode having a low overvoltage and good corrosion resistance in alkaline solution such as KOH and NaOH, for the oxygen and hydrogen production. The commercial materials such as SUS(stainless steel)-316, Ni and NiFe were evaluated for the electrode in alkaline electrolysis. The test solution for the alkaline electrolysis used 1~9M NaOH and 1~9M KOH. The voltage increased with an increase of current density in each solution. As for the 15wt.% (about 5M) NaOH, the voltage of the tested electrode under the current density of 1.8A/$cm^2$ showed the almost same value. The voltage over the current density of 1.8A/$cm^2$ deceased in the order: Ni${\fallingdotseq}$NiFe showed the almost same value. The voltage over the current density of 1.8A/$cm^2$ deceased in the order: NiFeSUS-316. From the results, it was estimated that NiFe and Ni was suitable as the electrode for the alkaline water electrolysis using NaOH and KOH electrolyte.
Keywords
Hydrogen production; Alkaline water electrolysis; Electrode; Electrode property; Hydrogen;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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