Nexeon Limited

Simon Foxon

Scott Brown

Jonathon David Speed

James Farrell

David Bent

Timothy Bogart

Daniel Scarlett

Tsuyonobu Hatazawa

This invention relates to particulate electroactive materials consisting of a plurality of composite particles, wherein the composite particles comprise a plurality of silicon nanoparticles dispersed within a conductive carbon matrix. The particulate material comprises 40 to 65 wt % silicon, at least 6 wt % and less than 20% oxygen, and has a weight ratio of the total amount of oxygen and nitrogen to silicon in the range of from 0.1 to 0.45 and a weight ratio of carbon to silicon in the range of from 0.1 to 1. The particulate electroactive materials are useful as an active component of an anode in a metal ion battery.

Electroactive materials for metal-ion batteries

An electrochemically active material comprising a surface is provided, wherein the surface comprises an oligomer. A method of functionalising the surface with the oligomer is also provided.

Surface modification

An electrochemically active material comprising a surface is provided, wherein at least part of the surface is functionalised with a grafted heteroatom-functionalised oligomer. A method of functionalising the surface with the oligomer is also provided.

Functionalised electrochemically active material and method of functionalisation

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Abingdon, United Kingdom

Simon Foxon