Issue 2, 2011
From the journal:

Energy & Environmental Science

Simple and reliable model for estimation of methanol cross-over in direct methanolfuel cells and its application on methanol-concentration control

Federico Zenithab  and  Ulrike Krewer*ab  

* Corresponding authors

a Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstraße 1, Magdeburg, Germany
E-mail: krewer@mpi-magdeburg.mpg.de
Fax: +49 391 6110 536
Tel: +49 391 6110 443

b Portable Energy Systems, Chair for Process Systems Engineering, Otto von Guericke University, Universitätsplatz 2, Magdeburg, Germany

Abstract

A simplified model of mass-transport phenomena on the anodic side of direct methanol fuel cells (DMFCs) is presented, with the objective of estimating the cross-over flux in order to enable feedforward (sensorless) control of anodic concentration in DMFC systems. The effect of parameter uncertainty on the tracking error of the control system is analysed and several models for temperature dependence are proposed. Experimental data on methanol cross-over was gathered in a DMFC system, and the models were discriminated by means of nonlinear regression. The regression results and an initial test run indicate that feedforward control of anodic methanol concentration in DMFC systems is feasible.

Graphical abstract: Simple and reliable model for estimation of methanol cross-over in direct methanol fuel cells and its application on methanol-concentration control

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Article information

DOI
https://doi.org/10.1039/C0EE00415D
Article type
Paper
Submitted
07 Sep 2010
Accepted
04 Nov 2010
First published
06 Dec 2010

Energy Environ. Sci., 2011,4, 519-527

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Simple and reliable model for estimation of methanol cross-over in direct methanol fuel cells and its application on methanol-concentration control

F. Zenith and U. Krewer, Energy Environ. Sci., 2011, 4, 519 DOI: 10.1039/C0EE00415D

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