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The team of Sun Licheng of the State Key Laboratory of Fine Chemicals of Dalian University of Technology developed nickel-boron alloy thin-film electrodes by electroless plating method based on the research on electrochemical hydrogen production catalysts for efficient and stable copper nanopillars carried out in the early stage, and developed NixBy alloy thin-film electrodes by electroless
plating method.
It was found that changing the content of boron atoms in NixBy alloy can change the diameter of NixBy alloy particles, thereby changing the electrochemical active area
of the electrode.
The relevant results were recently published in the journal
"Nano Energy".
It is understood that the research and development of efficient, stable, low overpotential non-precious metal catalysts is one of the key issues to achieve low-cost electrolysis of
water to produce hydrogen.
At the same time, high-efficiency electrochemical catalysts can also be combined with semiconductor materials to construct photosensitive electrodes for photolysis of water to produce hydrogen
.
The latest research shows that with the increase of boron atom content, the surface of NixBy alloy particles gradually changes
from amorphous to partially crystalline.
NixBy thin-film electrodes have high catalytic hydrogen production activity in acidic, neutral and alkaline aqueous solutions, and the catalytic activity increases
with the increase of boron atom content in NixBy alloy.
The electrocatalytic hydrogen production activity of NixBy thin film electrode with a boron-nickel atom ratio of 0.
54 is slightly lower than that of platinum sheet in acidic aqueous solution, while the electrocatalytic hydrogen production activity of NixBy in neutral and alkaline aqueous solution is significantly higher than that of platinum sheet.
NixBy thin-film electrodes have good stability in neutral and alkaline aqueous solutions, and the efficiency of hydrogen production is close to 100%.
