Application of Silicon Carbide and Boron Carbide in Electrocatalysis

Fuel cells are new energy technologies with broad application prospects. Carbon-supported platinum-based catalysts (Pt/C) are the most commonly used fuel cell electrode catalysts, but the poor stability and high cost of Pt/C severely limit their large-scale applications.

Covalent carbides, silicon carbide, and boron carbide, have excellent physicochemical stability due to their extremely strong covalent bonds, and have become important basic materials for the preparation of fuel cell catalysts with high stability and low cost.

Hydrogen is widely used in many fields such as industry and medical treatment, and it is also one of the most commonly used fuels for fuel cell anodes. Platinum-based catalysts are still the best hydrogen production catalysts. Silicon carbide (SiC) is a compound with very stable physicochemical properties. Composite nanomaterials with SiC as an important component are also often used as supports for platinum-based catalysts.

B4C is a highly stable covalent compound with good chemical stability, and has attracted attention as a catalyst support material in recent years. Boron carbide (B4C) does not react with acids and alkaloids, and its low density and high chemical potential make it one of the most stable substances in acids. Through synergistic action, B4C may promote catalytic activity and thus is expected to be used as a catalyst support material for fuel cells.

As covalent carbides, SiC and B4C have extremely strong covalent bonds and excellent physicochemical stability, which is the main reason for their high stability as catalysts. SiC and B4C have broad application space in the field of electrocatalysis, and will also help the large-scale commercial application of fuel cells.

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