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Title [sv]
Superlitiering - en ny mekanism för att nå extrema kapaciteter hos organiska elektrodmaterial för energilagring
Title [en]
Superlithiation - how to reach extreme capacities in organic electrode materials for energy storage
Abstract [en]
The need for chemical energy storage in the form of advanced rechargeable batteries is rapidly increasing: for electric vehicles, grid storage and powering the internet-of-things. In order to utilize biomass resources and more sustainable manufacturing and recycling processes, organic molecular salts can be employed as active electrode materials to replace the inorganic counterparts in some of these applications. We have recently shown that extremely high capacities (>1000 mAh/g) can be obtained for certain types of organic electrode materials comprising unsaturated bonds, in a mechanism coined “superlithiation”. A comparatively superior and remarkable amount of cations seems to be bonded to the organic molecules. The mechanisms behind these reactions are still poorly understood, but computational studies show that some organic salt molecules can undergo a reversible lithiation redox mechanism, with a very high lithium:carbon ratio as compared to other carbonaceous compounds – and thereby very high capacities. This proposal targets exploring this category of reactions, to understand how it occurs, for what molecules, and how to overcome its current limitations in terms of stability and electrochemical performance. To this end, a range of advanced materials characterization techniques will be employed. The ultimate aim would be to utilize these potentially sustainable materials in novel energy storage systems.
Principal InvestigatorBrandell, Daniel
Coordinating organisation
Uppsala University
2019-01-01 - 2022-12-31
National Category
Physical ChemistryMaterials ChemistryInorganic Chemistry
DiVA, id: project:6176Project, id: 2018-04506_VR

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