| abstract |
The present invention provides a bismuth-based composite catalyst for producing formic acid by electroreduction of CO 2 , which comprises a metal M1 element and a metal M2 oxide, wherein M1 and M2 can be bismuth, zinc, tin, silver, indium, lead, Metals such as copper, and M2 includes at least metal bismuth. The invention also provides an electrode for producing formic acid by CO2 electroreduction, a preparation method of the bismuth-based composite catalyst, and a method for producing formic acid by CO2 electroreduction. The bismuth-based composite catalyst provided by the invention maintains high formic acid selectivity and also improves the acid resistance and high-concentration formic acid inhibition effect, thereby improving chemical stability, and the preparation method is simple, the process steps are simple, and the raw materials are cheap and sourced It has a wide range of catalysts, greatly broadening the types of catalysts, and will have good application prospects in the process of CO 2 electroreduction to formic acid and other process fields. |