Journal ArticleDOI
Non-linear electric analogues of the current distribution in porous electrodes
K. J. Euler,B. Seim +1 more
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In this paper, the volumetric current distribution of battery electrodes is modeled as electrical networks, and the current distribution in such non-linear and time-dependent systems can be evaluated either by numerical computor calculations, or by the application of corresponding electrical analogues.Abstract:
Porous battery electrodes can, with respect to their volumetric current distribution, be regarded as electrical networks. Linear, time-independent networks again can be treated by analytical methods. In some practical cases, however, deviations have to be considered: non-linear overvoltage functions, changing conductivities. Current distribution in such non-linear and time-dependent systems can be evaluated either by numerical computor calculations, or by the application of corresponding electrical analogues. The latter way is fairly simple and will be treated here.read more
Citations
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Assessment of carbon foam geometry during copper coating
TL;DR: In this paper, a numerical model was developed to determine the coating thickness and its distribution in carbon foam, and a comparison of the mathematical model to the experimental measurements reveals that the model is capable of predicting the coating layer thickness inside carbon foam fairly well.
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Direct calculation of the sulphur electrode resistance in sodium-sulphur cells
M. W. Breiter,B. Dunn +1 more
TL;DR: In this article, a simple model is used to compute the resistance of the sulphur electrode as a function of charge and it is shown that the general network used for the simulation of the behaviour of the sulfur electrode can be simplified because of the relatively small value of the polarization resistance.
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Kinetic barriers to the preferred electrode process in subzero battery electrolytes
TL;DR: In this paper, the authors discussed the factors which limit the rate and completeness of the charge and discharge processes of battery systems at low temperatures, such as low concentration of reactants, low fluidity and relaxation rate of electrolyte, low nucleation and growth rate of reaction products, low ionic- vs semiconductivity, and low average pore size in the plates.
Journal ArticleDOI
Non-linear simulation of current distribution and potential profile in porous manganese dioxide electrodes during discharge
TL;DR: In this paper, the potential profile growth in a non-linear electrical electrode analogue has been investigated and the shape of the pAs soon as the results obtained here have been transformed into cylindrical electrode geometry, they will be compared with real cells of adequate size.
Journal ArticleDOI
An active dummy cell for use in corrosion studies
TL;DR: In this article, a dummy cell based on a gold-bonded germanium diode is described and its electrical performance resembles that of an electrode process with Tafel slopes of 60 mV and co respectively.
References
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Journal ArticleDOI
Theoretical Analysis of Current Distribution in Porous Electrodes
John Newman,Charles W. Tobias +1 more
TL;DR: In this article, general equations describing the behavior of porous electrodes are developed and used to determine the initial and the steady-state conditions in one-dimensional porous electrodes of uniform geometry and polarization parameters.
Journal ArticleDOI
Stromverteilung in porösen elektroden
J. Euler,W. Nonnenmacher +1 more
TL;DR: In this paper, the authors find a geometrisch einfache Falle ein system of Differentialgleichungen finden, deren Losung die gesuchte ortliche hyperbolische Kosinusfunktionen, von denen die einzelnen Kenngrossen auf die Stromverteilung and die Eindringtiefe des Stromes gezeigt.
Journal ArticleDOI
Dry Cell Dynamics: The Bobbin
TL;DR: In this article, the relation between ampere-hour capacity and drain was investigated using a simplified model of the bobbin, and Kirchhoff's law was applied to determine how the current through the manganese particles is distributed.
Journal ArticleDOI
Distribution of Current in Porous Electrodes
TL;DR: In this article, an experimental test is made of the applicability of Kirchoff's law to porous electrodes, applied to a dry cell made with three bodies of mix separated from each other by paper walls wet with electrolyte.
Journal ArticleDOI
Die Änderung der Stromverteilung in porösen Braunstein-Elektroden während der Entladung
TL;DR: In this paper, an Entladung verlieren in einer endlich dicken, porosen Elektrode with anfanglich ungleichmassiger Stromverteilung die einzelnen Elektrodenschichten ihre Spannung verschieden schnell Dadurch stellt sich in der Elektronen eine bestimmteortliche spannungsproils ein.