Dachen TAO , Xin XIE , Yang YANG , Jun LI , Dingding YE , Rong CHEN , Xun ZHU , Qiang LIAO
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引用次数: 0
Abstract
Resulting from the capability of resisting fluctuating energy inputs, proton exchange membrane water electrolysis (PEMWE) technology holds significant potential for green hydrogen production. The performance of PEMWE is influenced by various structural parameters, in which the properties of the porous transport layer (PTL) are particularly critical. Optimizing the structural characteristics of the PTL is important for enhancing the overall performance of PEMWE. In this study, a three-dimensional steady-state PEMWE model is firstly developed. Based on the model, polarization curves of the PEMWE under different PTL parameters are computed, and the impacts of three characteristic parameters, i.e. porosity, thickness, and conductivity, on the PEMWE performance are thoroughly investigated. Then, the corresponding performance optimization strategies are proposed by incorporating a multilayer perceptron (MLP) machine learning model. It shows that porosity plays a dominant role in the PTL performance among the three parameters, followed by thickness, with conductivity having a relatively minor impact. The increasing of porosity and reducing of thickness can effectively enhance the electrolyzer performance. According to the MLP model screening, the optimal PTL structure is determined to be the porosity of 0.52, thickness of 0.2 mm, and conductivity of 4×106 S/m. At 2 A/cm², the operating voltage of the PEMWE is 1.85 V.
期刊介绍:
Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.