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Study on the Bubble Behavior and Anodic Overvoltage of NiFe2O4 Ceramic Based Inert Anodes

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Light Metals 2015

Abstract

NiFe2O4 ceramic based inert anodes were fabricated by a two-step cold-pressing sintering process. The bubble behavior of NiFe2O4 ceramic based inert anodes was investigated in a two-compartment see-through quartz cell. Anodic overvoltage and potential decay curves on the inert anodes were measured by using the steady state and current interruption technique. The results show that the electrolytic gas evolution for NiFe2O4 inert anodes, including bubble nucleation, growth, coalescence, growth again, migration and escaping, lasts for 79s and the escaping bubble size is about of Φ4mm×2mm. While gas evolution lasts for 102s of carbon anodes with larger releasing bubbles. When current densities are 0.6, 0.8, 1.0 and 1.2A/cm2, the anodic overvoltage of NiFe2O4 anodes are 0.189 V, 0.270 V, 0.309 V and 0.359 V, respectively. After adding small amount of MnO2, V2O5, and TiO2, a minor reduction in anodic overvoltage of NiFe2O4 anodes can be obtained.

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Author information

Authors and Affiliations

  1. School of Metallurgy Engineering, Xi’an University of Architecture and Technology, China

    Jinjing Du, Bin Wang, Zhao Fang & Ping Hu

  2. School of Materials and Metallurgy, Northeastern University, USA

    Yihan Liu & Guangchun Yao

Authors
  1. Jinjing Du
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  2. Bin Wang
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  3. Yihan Liu
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  4. Guangchun Yao
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  5. Zhao Fang
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  6. Ping Hu
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Editor information

Editors and Affiliations

  1. Department of Chemical and Materials Engineering, University of Auckland, New Zealand

    Margaret Hyland (professor; Deputy Dean of the Faculty of Engineering; and a principal investigator in the Light Metals Research Centre; Ph.D. in Chemistry) (professor; Deputy Dean of the Faculty of Engineering; and a principal investigator in the Light Metals Research Centre; Ph.D. in Chemistry)

  2. University of Western Ontario, Canada

    Margaret Hyland (professor; Deputy Dean of the Faculty of Engineering; and a principal investigator in the Light Metals Research Centre; Ph.D. in Chemistry) (professor; Deputy Dean of the Faculty of Engineering; and a principal investigator in the Light Metals Research Centre; Ph.D. in Chemistry)

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© 2015 TMS (The Minerals, Metals & Materials Society)

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Du, J., Wang, B., Liu, Y., Yao, G., Fang, Z., Hu, P. (2015). Study on the Bubble Behavior and Anodic Overvoltage of NiFe2O4 Ceramic Based Inert Anodes. In: Hyland, M. (eds) Light Metals 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48248-4_200

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