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Towards Calcium Metal Anode Batteries

Research Seminar Series

20231113Dr Alexandre PonrouchISE Website Event Image
  • Date

    13 Nov 2023

  • Organiser

    Department of Industrial and Systems Engineering, PolyU

  • Time

    15:00 - 16:30

  • Venue

    Online via Zoom  


Dr. Alexandre Ponrouch


Meeting link will be sent to successful registrants

20231113_Dr Alexandre Ponrouch_ISE Website_Poster


Various metals have been used as battery anodes in electrochemical cells ever since the birth of the batteries with Volta’s pile and in the first commercialized primary (Zn/MnO2, Leclanché 1866) and secondary (Pb/acid, Planté 1859) batteries. Li-MoS2 cells, employing Li metal anodes, with specific energies two to three times higher than both Ni/Cd and Pb/acid cells, were withdrawn from the market due to safety issues related to dendrites growth. Instead, Ca are currently being considered as safer metal anode alternative. Pioneering work by Aurbach et al. in the early 1990’s showed a surface-film controlled electrochemical behavior of Ca metal anodes in electrolytes with conventional organic solvents. The lack of metal plating was attributed to the poor divalent cation migration through the passivation layer.

Nevertheless, demonstration of Ca plating and stripping in the presence of a passivation layer has paved the way for assessment of new electrolyte formulations with high resilience towards oxidation. However, several challenges remain to be tackled for the development of Ca based batteries. Among these, the need for reliable electrochemical test protocols, mass transport limitations and high desolvation energies (due to strong cation-solvent and cation–anion interactions) are implied. Here, a systematic investigation of the electrolyte formulation impact on the cation solvation structure and transport is presented. Characterization of the passivation layer formed onto the Ca metal anode in various electrolyte formulations using complementary techniques will be presented allowing for the identification of the most suitable passivation layer components in terms of divalent cation mobility. Finally, recent development on cathode materials will be discussed including promising organic cathode materials.

Keynote Speaker

Dr. Alexandre Ponrouch

Dr. Alexandre Ponrouch

Research Scientist,
Materials Science Institute of Barcelona, 

Alexandre Ponrouch received his Ph.D. in 2010 from the Institut National de la Recherche Scientifique (INRS-EMT, Québec, Canada) working on electrodeposition of metals, alloys, and oxides nanotubes and nanowires for application in fuel cells and supercapacitors. He is currently staff researcher at Institut de Ciència de Materials de Barcelona (ICMAB-CSIC, Spain). His research is mainly focused on fundamental electrochemistry applied to the development of new electrolytes, interfaces, and interphases for post Li batteries, including Na-ion, Ca, Mg and multi cations-based batteries.

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