The development of instrumental coupling techniques has contributed significantly to the team's scientific advances. Drawing on this experience, the team has designed a DEMS (Differential Electrochemical Mass Spectrometer) that can correlate the nature of the gases emitted with the applied potential, thereby providing a better understanding of the reaction mechanisms involved.
Since 2018, the team is equipped with an ICP-MS (Inductively Coupled Plasma Mass Spectrometer), used mainly in conjunction with an electrochemistry bench. To this end, several coupling cells have been internally developed: flow cell, gas diffusion cell, cell for corrosion studies. This coupling, which is essential to the laboratory, provides many answers for understanding the degradation phenomena of catalysts used in fuel cells and electrolysers, as well as for evaluating the role of the crystallographic structure or formulation of the catalyst.
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Selected publications related to coupling as developed by the team (MATHILDE (PEPR-H2), DAEMONHYC (PEPR-H2), ANR ANIMA, DEEP projects… HERMES (European project)…)
- Delphine Clauss, Jakub Drnec, Marta Mirolo, Laetitia Dubau, Frédéric Maillard. Deciphering the Roles of Chemistry and Structure in Iridium Oxide Oxygen Evolution Nanocatalysts. 74th Annual Meeting of the International Society of Electrochemistry, Sep 2023, Lyon, France.⟨hal-04206617⟩
- Camille Roiron, Vincent Martin, Kavita Kumar, Laetitia Dubau, Frédéric Maillard. Assessing Pt and Ni dissolution mechanism and kinetics of shape-controlled oxygen reduction nanocatalysts. Electrochimica Acta, 2024, 477, pp.143760. ⟨10.1016/j.electacta.2024.143760⟩. ⟨hal-04392526⟩
- Toni Srour, Kavita Kumar, Vincent Martin, Laetitia Dubau, Frédéric Maillard, et al.. On the contact resistance between the anode and the porous transport layer in a proton exchange membrane water electrolyzer. International Journal of Hydrogen Energy, 2024, 58, pp.351-361. ⟨10.1016/j.ijhydene.2024.01.134⟩. ⟨hal-04414456⟩
- Angus Pedersen, Kavita Kumar, Yu-Ping Ku, Vincent Martin, Laetitia Dubau, et al.. Operando Fe dissolution in Fe–N–C electrocatalysts during acidic oxygen reduction: Impact of local pH change. Energy & Environmental Science, 2024, 17 (17), pp.6323-6337. ⟨10.1039/d4ee01995d⟩. ⟨hal-04667261⟩
- Keyla Teixeira Santos, Luz Adela Zavala Sanchez, Vincent Martin, François Guillet, Kavita Kumar, et al.. Unveiling the degradation mechanism of cathodic MoS2/C electrocatalysts for PEMWE applications. Electrochimica Acta, 2024, 507, pp.145195. ⟨10.1016/j.electacta.2024.145195⟩. ⟨hal-04727085⟩
- Guillaume Braesch, Antoine Bonnefont, Vincent Martin, Elena R. Savinova, Marian Chatenet. Borohydride oxidation reaction mechanisms and poisoning effects on Au, Pt and Pd bulk electrodes: From model (low) to direct borohydride fuel cell operating (high) concentrations. Electrochimica Acta, 2018, 273, pp.483 - 494. ⟨10.1016/j.electacta.2018.04.068⟩. ⟨hal-01887240⟩