电解
质子交换膜燃料电池
流量(数学)
氧气
膜
频道(广播)
化学工程
比例(比率)
电解槽
放大
化学
材料科学
电极
工程类
机械
电气工程
有机化学
物理
电解质
生物化学
物理化学
量子力学
经典力学
作者
Yuxin Li,Xiaolong Liu,Longfei Chen,LI Jin-pei,Daiman Zhu,Yongli Li
标识
DOI:10.1002/ente.202301603
摘要
In a proton exchange membrane electrolysis cell (PEMEC), the oxygen generated on the anode side diffuses into the flow channel and forms a gas–liquid two‐phase flow with liquid water. In order to increase the production of hydrogen, larger sized PEMEC would be favorable other than series connection of smaller ones, which can save cost, though the corresponding flow channel design is lacked. Herein, a “leaf‐vein” bionic flow channel for large‐scale PEMEC (the activation area is 1350 cm 2 ) is proposed. A 3D mixture and steady model of the PEMEC is developed to characterize the two‐phase flow in the flow field. Detailed analyses of geometric parameters are conducted through orthogonal test to determine the optimal channel geometry. The numerical results show that the optimized design of PEMEC increases medium and low oxygen gas content, and reduces pressure drop compared to traditional flow channels. An interdigitated leaf‐vein flow field is applied, which effectively alleviates gas blockage problems. This article will provide a theoretical basis for large‐scale PEMEC manufacturing.
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