Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.163
Publication date: 22nd December 2022
Renewables are essential for the energy transition to a sustainable and eco-friendly energy system that avoids the use of fossil fuels. One of the major limitations of renewables is their intermittent character which depends on climate conditions. This climate dependence leads to a complete disconnection between energy production and demand. Electrochemistry, fed by renewables, has emerged as a smart procedure that can pave the way for the energy transition. The main chemical procedures studied in electrochemistry are water splitting and CO2 reduction. In both cases, the oxygen evolution reaction (OER) takes place at the anode, providing the electrons and protons needed in the cathode for the generation of H2 in water splitting or the conversion of CO2 into valuable species, such as CH4 or CH3OH. The OER produces O2 that despite being a very important compound, its price in the market is very low, which limits the economic viability of the process and ultimately reduces the interest in this technology.1 Furthermore, this reaction exhibits large overpotentials when using catalysts based on earth abundant materials, limiting energy conversion efficiency.2 For these two reasons, there is a growing interest to find alternative reactions to OER at the anode that, by one side, reduce the overpotentials needed and by the other, produce compounds with higher added-value and interest for the chemical industry.1,3 In this framework biomass valorization, has emerged as an attractive substitute to the oxidation of H2O.4 Herein we present our more recent results in the electrochemical transformation of biomass, as well as the use of electrochemistry for energy storage.
The authors want to acknowledge the projects ECOCAT ref. PID2020-116093RB-C41, funded by MCIN/ AEI/10.13039/501100011033; UJI-B2019-20, funded by Universiy Jaume I; and PROMETEO/2020/028, funded by Generalitat Valenciana. D.C. acknowledges Generalitat Valenciana for grant GRISOLIAP/2019/057.
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