Electrode (anode and cathode) performance enhancement by composite formation with graphene oxide
AssigneeBelenos Clean Power Holding AG
InventorsReinhard Nesper, Tommy Kaspar, Yoann Mettan
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Abstract
Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.
Claims18
A method for producing a particle based, especially a fiber based electrode material comprising the steps of
- (A) preparing an electronically active precursor material comprising dispersion, said dispersion comprising
- (i) a soluble lithium source and a hydroxide source, especially lithium hydroxide, and
- (ii) an at least partially organic substance that is water soluble and that—mixed with electronically active material—can be pyrolized, and
- (iii) electronically active material (EAM), and
- (iv) graphene oxide (GO)
- (B) separating the solid electronically active precursor material from the liquid phase,
- (C) drying the electronically active precursor material of step (B)
- (D) pyrolizing the electronically active precursor material of step (C) to yield an active electrode material.
Dependencies are inferred from the claim text.