EDLstruct - Effect of carbon electrodes porous structure and electrolyte properties on the formation and composition of the electrical double-layer

• Applicant: Professor Dr. Andrea Balducci
• Subject Area: Physical Chemistry of Solids and Surfaces, Material Characterisation ; Solid State and Surface Chemistry, Material Synthesis
• Term: from 2017 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 380691101

• Final Report Year: 2023

Final Report Abstract

The work carried out during the project gave an important contribution toward the understanding of the impact of novel electrolyte on the behavior of EDLCs. The work on the project focus particularly on the thermal behavior of the electrolytes and on their impact on the stability of EDLCs during test at high temperature. This important aspect was not considered in the past and, therefore, the results of the project can be considered very novel. Using the in-situ STA cell, it was also possible to considered in detail the relationship between operative voltage and operative voltage. Taking these points into account, the project can be certainly considered as successful. It is also important to remark that despite the difficulties associated to the Covid emergency the two groups involved on the project have been able to stablish a very fruitful collaboration, as shown by the several common publications.

Publications

• Strategy to assess the carbon electrode modifications associated with the high voltage ageing of electrochemical capacitors in organic electrolyte. Energy Storage Materials, 38, 17-29.
  Pourhosseini, S.E.M.; Bothe, Annika; Balducci, Andrea; Beguin, Francois & Ratajczak, Paula
  
• The impact of the thermal stability of non-conventional electrolytes on the behavior of high voltage electrochemical capacitors operating at 60 °C. Electrochimica Acta, 374, 137919.
  Bothe, A. & Balducci, A.
  
• Towards understanding the impact of operating voltage on the stability of adiponitrile-based electrical double-layer capacitors. Journal of Power Sources, 496, 229841.
  Bothe, A.; Pourhosseini, S.E.M.; Ratajczak, P.; Beguin, F. & Balducci, A.
  
• Glyoxal‐Based Electrolytes in Combination with Fe2O3@C‐Based Electrodes for Lithium‐Ion Batteries. Batteries & Supercaps, 5(8).
  Bothe, Annika; Gehrlein, Lydia; Fu, Qiang; Li, Chengping; Maibach, Julia; Dsoke, Sonia & Balducci, Andrea
  
• Thermal analysis of electrical double layer capacitors: Present status and remaining challenges. Journal of Power Sources, 548, 232090.
  Bothe, A. & Balducci, A.
  
• Analysis of thermal and electrochemical properties of electrical double-layer capacitors by using an in-situ simultaneous thermal analysis cell. Electrochimica Acta, 444, 141974.
  Bothe, Annika; Pourhosseini, S.E.M.; Ratajczak, Paula; Béguin, François & Balducci, Andrea