Springer Nature is making Coronavirus research free. View research | View latest news | Sign up for updates

Local current densities in a two rotating disc electrode system with an axial electrolyte inlet measured by an autoradiographic method

  • 26 Accesses

  • 1 Citations


The distribution of local current densities in a rotating electrolyser with axial electrolyte inlet in a laminar flow regime was studied by the autoradiographic method. With all systems studied, the local current density decreased monotonically from a maximum value at the inner to a minimum at the outer boundary of the electrode. Experimental results are compared with the numerical solution of the convective diffusion equation by the finite element method.

This is a preview of subscription content, log in to check access.


a, b :


c :


c 0 :

concentration in the bulk phase

d :

optical density

D :

diffusion coefficient

F :

Faraday constant, 96 487 C mol−1

h :

interelectrode distance

j :

local current density

J n, dif :

density of diffusion flux in outer normal direction

n :

number of electrons transferred in the elementary step

\(\dot n_{dif}\) :

diffusion flux

Q :

volume rate of flow

r :

radial coordinate

r 0 :

inner electrode radius

r 1 :

outer electrode radius

r v :

radius of inlet orifice

r d :

outer disc radius

t :


v r :

radial velocity component of liquid

v z :

normal velocity component of liquid

z :

normal coordinate


thickness of the layer in which the equation of convective diffusion is solved

v :

kinematic viscocity


angular velocity


  1. [1]

    R. E. W. Jansson,Electrochim. Acta 23 (1978) 1345.

  2. [2]

    M. Fleischmann, R. E. W. Jansson and R. J. Marshall, Brit. Pat. 04 939 (1976).

  3. [3]

    R. E. W. Jansson and R. J. Marshall,J. Appl. Electrochem. 8 (1978) 287.

  4. [4]

    M. Šimek and I. Roušar, Collect.Czech. Chem. Commun. 49 (1984) 1122.

  5. [5]

    A. B. Ferreira and R. E. W. Jansson,Trans. Inst. Chem. Engrs. 57 (1979) 262.

  6. [6]

    M. Šimek and I. Roušar,J. Appl. Electrochem., in press.

  7. [7]

    Idem M. Šimek and I. Roušar,ibid. J. Appl. Electrochem., in press.

  8. [8]

    A. W. Rogers, ‘Techniques of Autoradioigraphy’, Elsevier, Amsterdam (1967).

  9. [9]

    W. Hartmann, ‘Messverfahren unter Anwendung ionisierender Strahlung’, Akademische Verlagsgesellschaft Geest u. Portig, Leipzig (1969).

  10. [10]

    B. Štverák et al.,Radioizotopy 12 (1971) 359.

  11. [11]

    R. E. W. Jansson and G. A. Ashworth,Electrochim. Acta 22, (1977) 1301.

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Šimek, M., Roušar, I. & Štverák, B. Local current densities in a two rotating disc electrode system with an axial electrolyte inlet measured by an autoradiographic method. J Appl Electrochem 21, 6–10 (1991).

Download citation


  • Physical Chemistry
  • Finite Element Method
  • Laminar Flow
  • Flow Regime
  • Diffusion Equation