研究目的

Investigating the electrochemical properties of SnO2-RuO2 mixed films prepared by the SILAR method for supercapacitor applications.

研究成果

In conclusion, we have successfully synthesized SnO2–RuO2 mixed thin films by simple and inexpensive SILAR method at low temperature. Furthermore, the SnO2 and RuO2 content in the mixed thin films are varied by changing the deposition cycle, while making the mixed films. The structural results exhibit the transition from nanocrystalline mixed film to amorphous mixed films with increasing content of RuO2. Likewise, the surface morphology changes from porous fibrous to porous framework of nanoparticles and finally agglomerated nanoparticles with increasing RuO2 content. Finally, electrochemical performance of SnO2-RuO2 mixed thin films (1:3 ratio of SnO2:RuO2) shows the specific capacitance of 185 F/g with maximum utilization of RuO2 with specific capacitance of 1010 F/g. Therefore, simple and inexpensive SILAR method can be used to enhance the electrochemical performance of other electrochemical materials by combining with precious and high electroactive RuO2.

研究不足

The method employed in this work is low-temperature synthesis method with deposition directly from solution in the form of thin film, it is somewhat difficult to predict how much SnO2 and RuO2 will be involved in the deposition process like other chemical methods wherein weighed amount of elements is mixed into each other to form required composite. The techniques like EDAX will only give an idea about elements present but not the weight fraction. The XRD curves are also not useful as one of the phase RuO2 is in the amorphous form.