Mr. Fengxiang Ma Profile

Fengxiang Ma

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Proceedings Article | 6 February 2024 Paper

Study on the influence of multiple parameters on carbon dioxide electrolytic conversion system

Shan Zhu, Yue Zhao, Fengxiang Ma, Wangchao Dong, Taotao Zhou, Xianwen Zhang

Proceedings Volume 12979, 129792P (2024) https://doi.org/10.1117/12.3015613

KEYWORDS: Humidity, Anodes, Electrodes, Carbon monoxide, Electrolytes, Diffusion, Liquids, Carbon

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Driven by renewable electric energy, using electrochemical methods to convert CO₂ into carbon-based fuels through carbon dioxide reduction reaction (CO₂RR) is an effective way to achieve CO₂ conversion and utilization. Considering the requirements for future large-scale industrial application of this technology, finding suitable operating parameters is essential to improve the reaction efficiency and stability. This paper mainly focuses on the more advanced membrane electrode configuration electrolytic cell, used for electrolysis of carbon dioxide to formic acid. Firstly, an electrochemical test platform is built, and a carbon dioxide electrolytic cell based on double membrane structure is designed. Then based on our electrochemical test platform, the effects of parameters such as cathode inlet flow rate, intake humidity, anode electrolyte flow rate and electrolyte temperature on the performance of CO₂RR are investigated, in terms of key parameters such as current density and product concentration. Experimental results manifest that when the cathode-to-anode flow rate ratio is 10:1 (the cathode and anode inlet gas flow rate: 20 and 2 mL/min, respectively), the performance of the electrolysis cell can be optimized at appropriate operating temperature (approximately 60 °C) and under high inlet gas humidity.

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