Belenos Clean Power Holding Ag

The Swatch Group Research and Development Ltd

Yoann Mettan

Michael Stalder

Reinhard Nesper

Tommy Kaspar

Rahul Fotedar

Mario Simoes

Anke Weidenkaff

Simone Pokrant

Frédy Züllig

The present invention relates to a liquid electrolyte formulation for a lithium metal secondary battery comprising:

Liquid electrolyte formulation for lithium metal secondary battery and lithium metal secondary battery comprising said liquid electrolyte formulation

Nanocomposits of conductive, nanoparticulate polymer and electronically active material, in particular PEDOT and LiFePO, were found to be significantly better compared to bare and carbon coated LiFePOin carbon black and graphite filled non conducting binder. The conductive polymer containing composite outperformed the other two samples. The performance of PEDOT composite was especially better in the high current regime with capacity retention of 82% after 200 cycles. Hence an electrode based on composite made of conductive, nanoparticulate polymer and electronically active material, in particular LiFePOand PEDOT nanostubs, with its higher energy density and increased resistance to harsh charging regimes proved to dramatically extend the high power applicability of materials such as LiFePO.

Open porous electrically conductive nanocomposite material

A method is described to prepare a cathode material for high energy density rechargeable lithium ion batteries based on HVOwith improved cycling stability by means of a surface modification produced at low temperature in aqueous media. The battery comprises a stack composed by an anode, an electrolytic layer, a separator and a cathode, whose material is based on a mixture of carbon black LiHVOmodified by an aluminum hydroxide coating achieved in a one pot multistep reaction using aluminum in an amount comprised between 0.5 wt % and 10 wt %.

[object Object]

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.

Electrode (anode and cathode) performance enhancement by composite formation with graphene oxide

A composite material comprising graphene oxide and an electrochemically active ingredient, in particular HVOwith x ranging from 0.1 to 2.2, as well as a method for its manufacture were developed. The composite material is suitable for being used as electrode in an electrochemical cell.

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Evionnaz, Switzerland

Yoann Mettan