Proceedings of nanoGe Fall Meeting19 (NFM19)
DOI: https://doi.org/10.29363/nanoge.nfm.2019.014
Publication date: 18th July 2019
Solar water splitting and reduction of atmospheric CO2 are complementary processes to reduce global warming and greenhouse effect by synthesising valuable fuels and chemicals. With the aim of improving the overall efficiency of both processes, finding earth-abundant and cost-effective catalysts is still a key challenge. Ni based oxides constitute one of the most attractive and cost-effective water oxidation electrocatalysts, which represent a real alternative to the scarce RuO2 and IrO2 for the Oxygen Evolution Reaction (OER). On the other hand, Cu based materials are the most studied candidates for driving the CO2 Reduction Reaction (CO2 RR) due to their low cost and their noticeable ability to reduce CO2 to hydrocarbons and alcohols. Understanding the origin of the performance of the employed catalysts for carrying out these reactions is mandatory in order to rationalize the design and synthesis of technologically viable systems, which can be implemented as part of the energy industry.
The studied electrocatalysts were deposited by different techniques as magnetron sputtering, combustion or wet chemistry methods and complementary structural, optical, electrochemical and spectroscopic techniques were employed to identify the most relevant steps towards water oxidation or CO2 RR, as well as to determine the limiting factors for performance.
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