Journal of Bionic Engineering (2022) 19:761–776 https://doi.org/10.1007/s42235-022-00174-4
Plant vs. Animal Prototype for Designing Bio-inspired PEMFC Flow Fields: Corn Veins or Murray’s Law?
Wenxuan Fan1 · Taotao Zhao1 · Ke Jiang1 · Lei Sun1 · Saisai Jia1 · Qianqian Wu1 · Guolong Lu1 · Zhenning Liu1
1 Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China
Abstract Designing bio-inspired fow felds holds great potential in improving the performance of Proton Exchange Membrane Fuel Cell (PEMFC). Two kinds of biological prototypes are widely used: plant prototype and animal prototype. It remains a question which one of these prototypes is more appropriate for the scenario of PEMFC. Here, a comparative study was conducted to compare bionic fow felds based on animal and plant prototypes. First, a Corn Leaf Vein Mathematical Model (CLMM) was established by extracting structural parameters from corn leaves of two growth stages. Then the obtained CLMM and well-known Murray’s law were employed to design bionic fow felds corresponding to the plant and animal prototypes, respectively, which have been subsequently compared by numerical investigations. The results demonstrate that the fow feld guided by Murray’s law outperforms the counterpart based on the structural parameters of CLMM in terms of PEMFC net output power, mass transport, water management and pressure drop, suggesting that animal circulation system is more suitable to the bionic fow feld design of PEMFC than plant leaf veins. The work may also ofer valuable insights into the design of other fow felds related to electrochemical energy conversion.
Keywords Proton exchange membrane fuel cell · Flow feld · Biological prototypes · Corn leaf vein · Murray’s law · Comparative study
The diameter ratios of the first- and second-level lateral corn leaf veins