Open AccessDevelopment of the effective ways of the activation of the anodes for water electrolysis
Author(s) -
Yu. I. Kryukov,
AUTHOR_ID,
V. I. Lukovtsev,
E.M. Petrenko,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2012
Publication title -
èlektrohimičeskaâ ènergetika
Language(s) - English
Resource type - Journals
eISSN - 1680-9505
pISSN - 1608-4039
DOI - 10.18500/1608-4039-2012-12-1-39-41
Subject(s) - anode , electrolysis , electrolyte , electrochemistry , nickel , current density , electrolysis of water , electrode , inorganic chemistry , materials science , chemistry , sulfur , metallurgy , physics , quantum mechanics
Electrochemical activity of anodes on the basis of a nickel mesh grid for water electrolysis is investigated. Activation of anodes was made by three ways: 1) сhemical covering sulfur-containing compounds of nickel and iron; 2) immersing in solution Na2S2O3 + H2SO4 (till pH=3); 3) immersing in solution Na2S + H2SO4 (till pH=3). The water solution 6M KOH was used as the electrolyte while the electrodes testing. Current density varied in a range from 1 to 600 mA/ cm2 at temperature 20, 50 and 70°С. The greatest electrochemical activity have anodes activated by the third method. The anode potential at current density 600 mA/cm2 and temperature 70°С is equal +0.57 V (concerning Hg/HgO – the comparison electrode).