Double-functional perovskite/cerium oxide composite oxygen catalyst of bionic structure
A composite catalyst, oxygen catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, catalyst activation/preparation, etc., can solve the limitations of zinc-air battery discharge kinetic performance, perovskite Problems such as low catalytic activity of mineral oxygen
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Embodiment 1
[0025] With 0.271g cerium nitrate Ce(NO) 3 ·6H 2 O is Ce source, 1.498g barium hydroxide Ba(OH) 2 ·8H 2 O is barium source, 1.005g strontium nitrate Sr(NO 3 ) 2 As a strontium source, 2.328g cobalt nitrate Co(NO) 3 ·6H 2 O is cobalt source, 0.808g iron nitrate Fe(NO 3 ) 3 9H 2 O is an iron source, 20ml dimethylformamide (DMF) is an organic solvent, and polyvinylpyrrolidone (PVP) of 12%wt is added and fully mixed and stirred to obtain an electrospinning polymer solution, which is prepared by an electrospinning method (Ba 0.5 Sr 0.5 ) 1- x Ce x co 0.8 Fe 0.2 o 3 The nanofibers are dried and roasted at a certain temperature, wherein a voltage of 15KV is applied to the electrospinning needle, a receiver is placed at a distance of 15CM from the needle, the advancing speed of the syringe pump is 0.1ml / h, the working temperature is 50°C, and the humidity is 28%. The fibers obtained by electrospinning were dried at 60 °C for 12 h, and then sintered in a muffle furnace ...
Embodiment 2
[0029] With 0.271g cerium nitrate Ce(NO) 3 ·6H 2 O is Ce source, 1.498g barium hydroxide Ba(OH) 2 ·8H 2 O is barium source, 1.005g strontium nitrate Sr(NO 3 ) 2 As a strontium source, 2.328g cobalt nitrate Co(NO) 3 ·6H 2 O is cobalt source, 0.808g iron nitrate Fe(NO 3 ) 3 9H 2 O is an iron source, 20ml dimethylformamide (DMF) is an organic solvent, and 12%wt of polyacrylonitrile (PAN) is added to fully mix and stir to obtain an electrospinning outer layer polymer solution, and 9%wt of polyethylene Pyrrolidone (PVP) was added with 10ml of alcohol and stirred thoroughly, and prepared by electrospinning (Ba 0.5 Sr 0.5 ) 1-x Ce x co 0.8 Fe 0.2 o 3 The nanotubes are dried and roasted at a certain temperature. The electrospinning needle is applied with a voltage of 15KV, and the receiver is placed at a distance of 15CM from the needle. h The working temperature is 50°C and the humidity is 28%. The fibers obtained by electrospinning are dried at 60°C for 12 hours, and...
Embodiment 3
[0033] With 0.271g cerium nitrate Ce(NO) 3 ·6H 2 O is Ce source, 1.498g barium hydroxide Ba(OH) 2 ·8H 2 O is barium source, 1.005g strontium nitrate Sr(NO 3 ) 2 As a strontium source, 2.328g cobalt nitrate Co(NO) 3 ·6H 2 O is cobalt source, 0.808g iron nitrate Fe(NO 3 ) 3 9H 2 O is an iron source, 20ml dimethylformamide (DMF) is an organic solvent, and polyvinylpyrrolidone (PVP) of 12%wt is added and fully mixed and stirred to obtain an electrospinning polymer solution, which is prepared by an electrospinning method (Ba 0.5 Sr 0.5 ) 1- x Ce x co 0.8 Fe 0.2 o 3 The nanofibers are dried and roasted at a certain temperature, wherein the electrospinning needle is applied with a voltage of 18KV, a receiver is placed at a distance of 17CM from the needle, the advance speed of the syringe pump is 0.1ml / h, the working temperature is 50°C, and the humidity is 28%. The fibers obtained by electrospinning were dried at 60 °C for 12 h, and then sintered in a muffle furnace ...
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