Skip to main content

Advertisement

Log in

Relationship Between the Redox Reactions on a Bipolar Plate and Reverse Current After Alkaline Water Electrolysis

  • Original Research
  • Published:
Electrocatalysis Aims and scope Submit manuscript

An Author Correction to this article was published on 21 December 2017

This article has been updated

Abstract

In order to efficiently operate the alkaline water electrolyzers with renewable energy, behaviors of the electrolyzer during start-up or shut-down must be unveiled, because they might be suffered by reverse current that naturally flows. The mechanism of the reverse current in alkaline water electrolyzer having relation between the electrolyzer operating conditions and cell voltage has been investigated using a bipolar-type electrolyzer which consists of two cells. The electrodes were nickel mesh, which are conventional electrodes for alkaline water electrolyzer. The amount of natural reverse current measured during off-load was proportional to the current loaded until just before stopping the operation. The increase in the charge would result from the increasing oxide on the anode of the bipolar plate. Cell voltages were above 1.4 V at all cases just when the electrolyzer is forcibly opened the circuit to stop. The major redox couple of the reverse current would be [NiO2/NiOOH] and [H2/H2O] due to the cell voltage and the redox couples. The open circuit cell voltage of the cathode terminal side cell gradually decreased to 0.3 V, while that of the anode terminal side cell was maintained above 1.1 V. Therefore, nickel oxides on the anode of the bipolar plate would be reduced, and the cathodic active material of hydrogen and nickel for the cathode side of the bipolar plate would be oxidized during the reverse current flows. Ultimately, the reverse current would stop when the redox state of both sides of the bipolar plate had the same oxidation state.

Graphical Abstract

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

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

Change history

  • 21 December 2017

    The vertical axis of Fig. 6 has been corrected.

Abbreviations

U 1 :

Voltages of anode terminal cell

U 2 :

Voltages of cathode terminal cell

U 0 :

Theoretical decomposition voltage/electromotive force voltage

Φ s,c,t :

Absolute electrostatic potential at the outside of the cathodic double layer on the cathode of the terminal

Φ m.c,t :

Absolute electrostatic potential on the cathode of the terminal

Φ s,a,t :

Absolute electrostatic potential at the outside of the anodic double layer on the anode of the terminal

Φ m,a,t :

Absolute electrostatic potential of the anode on the anode terminal

Φ s,c,b :

Absolute electrostatic potential at the outside of the cathodic double layer on the bipolar plate

Φ m.c,b :

Absolute electrostatic potential on the cathode of the bipolar plate

Φ s,a,b :

Absolute electrostatic potential at the outside of the anodic double layer on the anode of the bipolar plate

Φ m,a,b :

Absolute electrostatic potential on the anode of the bipolar plate

η c, η a :

Cathodic or anodic overpotential

R a–c –R h–j :

Ionic resistance of each manifold

I r_ac –I r_hj :

Measured reverse currents through each manifold

I r :

Total reverse currents

R int :

Internal resistance of a cell

Q r,totl :

Charge of reverse current amount

E°:

Standard electrode potential

References

  1. J. Divisek, R. Jung, D. Britz, J. Appl. Electrochem. 20, 186 (1990)

    Article  CAS  Google Scholar 

  2. Japan Soda Industry Association, Soda technology handbook (2009)

  3. C.H. Comninellis, E. Plattner, P. Bolomey, J. Appl. Electrochem. 21, 415 (1991)

    Article  CAS  Google Scholar 

  4. S.K. Rangarajan, V. Yegnanarayanan, Electrochim. Acta 42, 153 (1997)

    Article  CAS  Google Scholar 

  5. R.S. Jupudi, G. Zappi, R. Bourgeois, J. Appl. Electrochem. 37, 921 (2007)

    Article  CAS  Google Scholar 

  6. F. Xing, H. Zhang, X. Ma, J. Power Sources 196, 10753 (2011)

    Article  CAS  Google Scholar 

  7. S. König, M.R. Suriyah, T. Leibfried, J. Power Sources 281, 272 (2015)

    Article  Google Scholar 

  8. H. Fink, M. Remy, J. Power Sources 284, 547 (2015)

    Article  CAS  Google Scholar 

  9. Y. Zhang, J. Zhao, P. Wang, M. Skyllas-Kazacos, B. Xiong, R. Badrinarayanan, J. Power Sources 290, 14 (2015)

    Article  CAS  Google Scholar 

  10. R.E. White, C.W. Walton, H.S. Burney, R.N. Beaver, Journal of Electrochemical Society 133, 486 (1986)

    Article  Google Scholar 

  11. A.T. Kuhn, J.S. Booth, J. Appl. Electrochem. 10, 233 (1980)

    Article  Google Scholar 

  12. F. Hine, Chemical Engineering of the Alkaline Water Electrolyzer (Tokyo, CEST, 1997), pp. 47–49

    Google Scholar 

  13. A. Madono, WO 2012/03273 A1

  14. M. Matsuoka, JP2013–209740 A

  15. D. Britz, Digital Simulation in Electrochemistry, 1st edn. (Springer, Berlin, 1980)

    Google Scholar 

  16. E.C. Dimpault-Darcy, J. Electrochemical Society 135, 656 (1988)

    Article  CAS  Google Scholar 

  17. P.W.T. Lu, S. Srinivasn, Journal of Electrochemical Society 125, 1416 (1978)

    Article  CAS  Google Scholar 

  18. M. Pourbaix, Atlas of Electrochemical Equilibria (Cebelcor, Brussels, 1966), pp. 330–342

    Google Scholar 

  19. A.J. Bard, Encyclopedia of Electrochemistry of the Elements 3, 13 (1975)

    Google Scholar 

Download references

Acknowledgements

This work was performed as one of the activities of alkaline water electrolysis research workshop cooperated by Asahi Kasei Co., Kawasaki Heavy Industries Ltd., ThyssenKrupp Uhde Chlorine Engineers (Japan) Ltd., De Nora Permelec Ltd., and Yokohama National University. The authors appreciate the person concerned.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Yosuke Uchino.

Additional information

A correction to this article is available online at https://doi.org/10.1007/s12678-017-0447-x.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Uchino, Y., Kobayashi, T., Hasegawa, S. et al. Relationship Between the Redox Reactions on a Bipolar Plate and Reverse Current After Alkaline Water Electrolysis. Electrocatalysis 9, 67–74 (2018). https://doi.org/10.1007/s12678-017-0423-5

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12678-017-0423-5

Keywords

Navigation