Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.231
Publication date: 22nd December 2022
The expected growth over the next few years in the battery sector is huge, with approximately 7 million tons of new batteries manufactured per year. This growth is mainly triggered by the deployment of the electric vehicle and by the energy storage coupled to wind and photovoltaic generation. However, the massive development of the sector could become an environmental problem since most commercial batteries are based on inorganic materials such as lithium, nickel and cobalt in lithium-ion batteries or vanadium in flow batteries. These materials are scarce, their production in some cases is not sustainable and some are even toxic. In this context, the replacement of these materials by organic compounds based on elements as abundant as C-H-O-N has become a very promising alternative [1].
Here I will present a wide overview of our research lines moving from organic aqueous redox flow batteries (OARFBs) to static batteries using redox-active polymer electrodes. In the case of RFBs, I will give a flavour on the multiple requirements of immiscible electrolyte including organic active species to develop a new concept of membrane-free RFB. In the second part, I will introduce the different polymer structures (linear, porous, hyperbranched, nanoparticles) containing redox active functionalities (quinones, phenazynes, etc) that we have developed in the last years. I will be focussed on their electrochemical properties in different electrolytes and their application in several battery technologies including Li-ion [2], multivalent [3], aqueous [4], all-polymer [5], etc).
Authors acknowledge the funding support given by the Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033) through the OMBAT project (PID2021-124974OB-C21) and by the European Union’s Horizon 2020 under the Marie Skłodowska-Curie grant agreement (No 860403) and the European Research Council (ERC) through the MFreeB ERC Consolidator grant (No. 726217).
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