Proceedings of Online nanoGe Fall Meeting 20 (OnlineNFM20)
Publication date: 4th October 2020
In terms of technological readiness, the most feasible approach for solar energy utilization would be a photovoltaic (PV) panel. However, the PV is faced with challenges concerning the security of supply because of the intermittent nature of the sun. In this context, solar rechargeable redox flow battery (SRFB) technology is being in the spotlight as a mean of simultaneously storing the solar energy into chemicals, which can be readily utilized to generate electricity via reversible reactions [1,2].
However, the plain fact is that there is that most studies overlook practical challenges arising from the inherent instability and degradation of the system under the light and heat. According to our recent theoretical modeling, silicon-based solar PV system shows a severe power-loss exceeding 20% compared to the ideal case [3]. In this work, above described thermal degradation is quantified by introducing a thermo-electrochemical model, which covers both heat-transfer and electrochemical studies to minimize the gap in performances between the laboratory and practical working environments with drastic temperature change and thermal shocks.
The main focus of the study is on avoiding the thermal efficiency loss at a high temperature, which has been a critical technical barrier for the practical application. In our model system, the electrolyte flow acts as a coolant-storage multi-functional medium, and it stabilizes the operating temperature of the photo-charging system via a heat-transfer regime at solid/liquid interface between the solar-driven device and electrolyte.
We thank the financial supports provided by the LEaDing Fellowship from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 707404.
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