SANS CHARACTERIZATION OF PILLARED GRAPHENE-BASED MATERIALS FOR SUPERCAPACITORS
The aim of the proposal is to investigate the hierarchical porosity within pillared graphene-based materials for supercapacitors as well as the polarization driven electrolyte ions adsorption (tetraalkylammonium cation-tertafluorofoborate anion in acetonitrile as electrolyte). We want (i) to gain a deeper understanding of the complex nanostructure of these composite materials (bridged and graphitic components), using hydrogenated or deuterated pillars to disentangle the different contribution, (ii) to demonstrate the electrosorption of electrolytic ions by comparing their localization within the different porosities before and after polarization, taking advantage of the sensitivity of neutrons to H and B. (iii) to compare the effect of static vs alternative polarization on the sample nanostructure. This SANS experiment will shed light on the ion adsorption/electrowetting processes in such multiscale composite materials and will allow gaining better understanding of ion sorption for optimizing the design of these promising materials, serving as model systems to probe structure-property relationships for a wide range of applications (energy storage, filtration, separation).
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MENDIL JAKANI Hakima; BEN CHERIFI Yassine; CHENAVIER Yves; F. Duclairoir; GONON; HASSAN Omar; PORCAR Lionel; POUGET Stephanie; TOUGNE Claire and ZANOTTI Jean-Marc. (2021). SANS CHARACTERIZATION OF PILLARED GRAPHENE-BASED MATERIALS FOR SUPERCAPACITORS. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-07-72
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