Abstract
Nanostructured Bismuth-based materials are promising electrodes for highly efficient electrochemical reduction processes such as hydrogen evolution reaction (HER). In this work, a novel sort of nanocomposite made up of partially reduced Bi2O3 into metallic Bi anchored on a 3D network of Ni-foam as a high-performance catalyst for electrochemical hydrogen reduction. The application of the hybrid material for HER is shown. The high catalytic activity of the fabricated electrocatalyst arises from the co-operative effect of Bi/Bi2O3 and Ni-foam which provides a highly effective surface area combined with the highly porous structure of Ni-foam for efficient charge and mass transport. The advantages of the electrode for the electrochemical reduction processes such as high current density, low overpotential, and high stability of the electrode are revealed. An overall comparison of our as-prepared electrocatalyst with recently reported works on related work is done.
Highlights
Producing enough energy to meet our needs has become a crucial problem [1–14]
The electrochemical water splitting approach is in its first stages and needs further improvement in terms of overpotential for Hydrogen and Oxygen evolution reaction start [71–84] and demand for high performance materials to be performed at higher current density and high stability for operational works [84–87]
During the hydrothermal process the following reactions would be occurred for the formation of oxidized Bi particles
Summary
Producing enough energy to meet our needs has become a crucial problem [1–14]. Demands are rising rapidly, due to the world’s increasing population and expanding industry [15–28]. The electrochemical water splitting approach is in its first stages and needs further improvement in terms of overpotential for Hydrogen and Oxygen evolution reaction start [71–84] and demand for high performance materials to be performed at higher current density and high stability for operational works [84–87]. In this regard, it requires several efforts to be put forward to address these deficiencies to further improve the water-splitting process
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