Open AccessElectrochemical oxidation of borohydride-ion on nickel electrode: a study by the method of ir-spectroscopy
Author(s) -
В. О. Романова,
AUTHOR_ID,
A. V. Romanov,
А. В. Чуриков,
I. M. Gamayunova,
Mikhail Alekseevich Churikov,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2014
Publication title -
èlektrohimičeskaâ ènergetika
Language(s) - English
Resource type - Journals
eISSN - 1680-9505
pISSN - 1608-4039
DOI - 10.18500/1608-4039-2014-14-2-57-67
Subject(s) - borohydride , cyclic voltammetry , electrochemistry , chemistry , inorganic chemistry , nickel , fourier transform infrared spectroscopy , aqueous solution , electrode , analytical chemistry (journal) , catalysis , chemical engineering , organic chemistry , engineering
The study of the anodic oxidation of borohydride-ion BH− 4 on catalytically active nickel electrode by methods of potentiostatic inclusion, galvanostatically inclusion, cyclic voltammetry and infrared spectroscopy with Fourier transformation. The composition of some intermediates of the process of electrochemical oxidation of BH− 4 and the mechanism of decomposition of borohydride, which includes the following basic stages: BH− 4 ! BH3(OH)− ! BH2(OH)− 2 ! BH(OH)− 3 ! B(OH)− 4 , is determined. The regularities of the kinetics of the electrochemical oxidation of BH− 4 – ion Ni-electrode is determined. The diffusion coefficient BH−− 4 ion in aqueous solution at a temperature of 25 °C, measured by electrochemical methods, ranges from 5.3·10−5 to 1.6 ·10−5, the average value of 2·10−5 cm2/s.