Preparation method of ruthenium@ruthenium dioxide core-shell nanospheres containing tensile strain for acidic oxygen production electrocatalyst
An electrocatalyst, tensile strain technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., to achieve the effects of easy control, convenient operation, and increased intrinsic activity
Active Publication Date: 2020-04-28
TIANJIN UNIV
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Abstract
The invention relates to a preparation method of ruthenium@ruthenium dioxide core-shell nanospheres containing tensile strain for an acidic oxygen production electrocatalyst. Ruthenium dioxide powderis placed in ultrapure water to be subjected to ultrasonic dispersion to obtain turbid liquid without sediment; the turbid liquid is continuously stirred at room temperature, and the turbid liquid isirradiated by using nanosecond parallel pulse laser to obtain a black solution; the black solution is placed in a refrigerator to be frozen into a solid, then the frozen solid is placed in a freeze dryer to be freeze-dried, and the ruthenium@ruthenium dioxide core-shell nanospheres containing strain are obtained. According to the prepared sample, the overpotential at 10 mA cm <-2 > is only 191 mVand is reduced by 100 mV or above compared with commercial ruthenium dioxide, and the ruthenium@ruthenium dioxide core-shell nanospheres are a ruthenium-based catalyst which is optimal in performanceat present and does not introduce other atoms. The preparation method is simple in process, convenient to operate and easy to control, and a useful way is provided for designing and synthesizing an efficient electrocatalyst.
Application Domain
Catalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalysts +1
Technology Topic
Ruthenium dioxideFreeze dry +8
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PUM
Property | Measurement | Unit |
Thickness | 2.0 ~ 3.0 | nm |
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