High-catalytic-activity anti-carbon-deposition anode material and preparation method thereof

Abstract

The invention relates to a novel high-catalytic-activity anode material of a solid oxide fuel cell (SOFC) and a preparation method of the anode material. The anode material is characterized in that the chemical formula is Co2TiO4, and the anode material can be decomposed to be a Co phase and a TiO2 phase which have specific microstructures, wherein the Co phase is used for providing an electronic transmission channel and supplying catalytic activity to the splitting decomposition and oxidation reactions of a hydrocarbon fuel; the TiO2 phase can be used for avoiding the formation of carbon deposition, simultaneously providing an ion transmission channel and increasing the oxidation rate of fuel gas. The invention simultaneously provides a preparation method of a novel anti-carbon-deposition anode material. The anode material has the advantages of high electrical conductivity, high catalytic activity to the hydrocarbon fuel, carbon deposition resistance, simple preparation process, environmental friendliness and the like.

Description

technical field [0001] The invention belongs to the fields of new energy, material processing and electric power, and in particular relates to a novel anode material of a solid oxide fuel cell (SOFC) which has high catalytic activity for hydrocarbon fuel oxidation and does not form carbon deposits and a preparation method thereof. Background technique [0002] Solid oxide fuel cell (SOFC) is a new type of power generation device, which has the advantages of high fuel energy conversion efficiency, low environmental pollution, strong fuel applicability and flexible design, and is known as the green energy of the 21st century. One of the most prominent advantages of SOFC is that it can directly use hydrocarbons (such as natural gas, methanol, propane) as fuel, which can solve the storage and transportation difficulties caused by hydrogen fuel. However, the traditional Ni-based ceramic anodes of SOFC (such as Ni-Zr 0.85 Y 0.15 o 2-δ and Ni-Ce 0.8 SM 0.2 o 2-δ etc.) have ex...

AI Technical Summary

Problems solved by technology

However, the impregnation method generally needs to repeat the impregnation preparation process for 7-10 times, the process requirements are high, the cycle is long, and it is difficult to meet the commercialization needs of SOFC; 3) Use Cu and other metals with low catalytic activity for hydrocarbon fuels to replace Ni

However, the melting point of Cu-based metals is low, and the electrocatalytic activity cannot meet the needs of SOFC, the battery anode polarization resistance is high, and the battery output power is low.

Existing research reports have shown that there is no relatively mature anode material with high carbon deposition resistance and high electrochemical activity.

Images