当前位置: X-MOL 学术J. Electrochem. Soc. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Adjoint Method for the Optimization of the Catalyst Distribution in Proton Exchange Membrane Fuel Cells
Journal of The Electrochemical Society ( IF 3.9 ) Pub Date : 2017-05-25 11:11:14 , DOI: 10.1149/2.0261711jes
James Lamb 1, 2 , Grayson Mixon 1, 2 , Petru Andrei 1, 2
Affiliation  

In this article we present an adjoint method for the optimization of the catalyst distribution in proton exchange membrane fuel cells (PEMFCs). By using the theory of functional analysis we derive analytical equations for the sensitivity functions of the cell voltage with respect to the catalyst distribution in a very general framework, independent on the transport model used to simulate the PEMFC. Then we present an efficient numerical algorithm to calculate the sensitivity functions using the adjoint method. The adjoint method has the advantage that it can be applied to the optimization of systems with a large (>104) number of optimization variables that are computed simultaneously and independently to maximize the objective function. Finally, we apply the method to the optimization of 2-D platinum distribution in PEMFCs. We show that the optimum platinum distribution varies with the operating conditions, position of landings and openings, cell geometry, and dimensions of the catalyst layers. The method presented in this work can be naturally extended to the optimization of other 2-D and 3-D field variables such as the porosity of catalyst and gas diffusion layers, particle size distribution, or microstructure of the cell.

中文翻译:

伴随法优化质子交换膜燃料电池催化剂的分布

在本文中,我们提出了一种用于优化质子交换膜燃料电池(PEMFC)中催化剂分布的辅助方法。通过使用功能分析的理论,我们得出了一个非常通用的框架中关于电池电压相对于催化剂分布的灵敏度函数的解析方程,而与用于模拟PEMFC的传输模型无关。然后,我们提出了一种有效的数值算法,使用伴随方法来计算灵敏度函数。伴随方法的优点是可以将其应用于具有较大(> 10 4)可同时独立计算以最大化目标函数的优化变量的数量。最后,我们将该方法应用于PEMFC中二维铂分布的优化。我们显示出最佳的铂分布随操作条件,平台和开口的位置,电池的几何形状以及催化剂层的尺寸而变化。这项工作中介绍的方法可以自然地扩展到其他2D和3D场变量的优化,例如催化剂和气体扩散层的孔隙率,粒径分布或电池的微观结构。
更新日期:2017-05-26
down
wechat
bug