气候变化领域集成服务门户(CCPortal): A lung-inspired approach to scalable and robust fuel cell design

CCPortal

DOI	10.1039/c7ee02161e
	A lung-inspired approach to scalable and robust fuel cell design
	Trogadas P.; Cho J.I.S.; Neville T.P.; Marquis J.; Wu B.; Brett D.J.L.; Coppens M.-O.
发表日期	2018
ISSN	17545692
起始页码	136
结束页码	143
卷号	11 期号:1
英文摘要	A lung-inspired approach is employed to overcome reactant homogeneity issues in polymer electrolyte fuel cells. The fractal geometry of the lung is used as the model to design flow-fields of different branching generations, resulting in uniform reactant distribution across the electrodes and minimum entropy production of the whole system. 3D printed, lung-inspired flow field based PEFCs with N = 4 generations outperform the conventional serpentine flow field designs at 50% and 75% RH, exhibiting a ∼20% and ∼30% increase in performance (at current densities higher than 0.8 A cm-2) and maximum power density, respectively. In terms of pressure drop, fractal flow-fields with N = 3 and 4 generations demonstrate ∼75% and ∼50% lower values than conventional serpentine flow-field design for all RH tested, reducing the power requirements for pressurization and recirculation of the reactants. The positive effect of uniform reactant distribution is pronounced under extended current-hold measurements, where lung-inspired flow field based PEFCs with N = 4 generations exhibit the lowest voltage decay (∼5 mV h-1). The enhanced fuel cell performance and low pressure drop values of fractal flow field design are preserved at large scale (25 cm2), in which the excessive pressure drop of a large-scale serpentine flow field renders its use prohibitive. © The Royal Society of Chemistry.
英文关键词	3D printers; Biological organs; Drops; Electrolytes; Entropy; Fractals; Fuel cells; Polyelectrolytes; Pressure drop; Proton exchange membrane fuel cells (PEMFC); Serpentine; Silicate minerals; Fuel cell designs; Fuel cell performance; Low pressure drop values; Maximum power density; Minimum entropy productions; Polymer electrolyte fuel cells; Reactant distribution; Serpentine flow fields; Flow fields; electrolyte; flow field; fuel cell; fuel consumption; homogeneity; low pressure; performance assessment; polymer; pressure drop; serpentine
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190337
作者单位	EPSRC Frontier Engineering Centre for Nature Inspired Engineering, Department of Chemical Engineering, University College London, London, WC1E 7JE, United Kingdom; Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London, WC1E 7JE, United Kingdom; Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States; Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom
推荐引用方式 GB/T 7714	Trogadas P.,Cho J.I.S.,Neville T.P.,et al. A lung-inspired approach to scalable and robust fuel cell design[J],2018,11(1).
APA	Trogadas P..,Cho J.I.S..,Neville T.P..,Marquis J..,Wu B..,...&Coppens M.-O..(2018).A lung-inspired approach to scalable and robust fuel cell design.Energy & Environmental Science,11(1).
MLA	Trogadas P.,et al."A lung-inspired approach to scalable and robust fuel cell design".Energy & Environmental Science 11.1(2018).