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Mario Mitov Georgi Hristov Elitsa Hristova Rashko Rashkov Marina Arnaudova Andreas Zielonka 《Environmental Chemistry Letters》2009,7(2):167-173
The complex performance of newly synthesized CoNiMnB electrodeposits in base-stabilized sodium borohydride solutions was examined.
The rate of hydrogen generation due to borohydride hydrolysis was determined at different temperatures. Activation energy
of approximately 33 kJ/mol was estimated, which is lower than the values reported for other catalysts. At electrochemical
conditions, there is a competition between borohydride hydrolysis and electrooxidation reactions. The electrooxidation of
borohydride takes place with low overpotentials at relatively high current densities. The long-term discharge at galvanostatic
conditions as well as possibilities for partial storage of generated hydrogen indicates potentials for application of studied
electrodeposits as anode material in direct borohydride fuel cells (DBFC). 相似文献
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Mario Mitov Elitsa Hristova Georgi Hristov Rashko Rashkov Marina Arnaudova Alexander Popov 《Environmental Chemistry Letters》2009,7(3):249-253
NiW systems are known as one of the best catalysts for various desulfurization processes. In this study, we examined catalytic
properties of NiW electrodeposits, produced from two different electrolytes, towards sulfide ion oxidation in alkaline solution.
Despite the big difference in morphology and structure of both materials, they exhibit almost the same catalytic activity
for the examined reaction. A possible explanation of this experimental fact is that the overall reaction is controlled by
the transport of oxygen through the catalyst samples. 相似文献
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