Nexeon Limited

Yuxiong Jiang

William James Macklin

Mamdouh Elsayed Abdelsalam

Chris Friend

Phil Rayner

Fengming Liu

Mino Green

Feng-Ming Liu

Valerie Elizabeth Dawn Stevens

Benjamin Odarkwei Mills-Lamptey

A powder comprising pillared particles for use as an active component of a metal ion battery, the pillared particles comprising a particle core and a plurality of pillars extending from the particle core, wherein the pillared particles are formed from a starting material powder wherein at least 10% of the total volume of the starting material powder is made up of starting material particles having a particle size of no more than 10 microns.

Structured particles

A method for treating silicon to form pillars, especially for use as the active anode material in Li-ion batteries, is disclosed. The process is simple to operate on a commercial scale since it uses a solution containing only a small number of ingredients whose concentration needs to be controlled and it can be cheaper to operate than previous processes. The solution includes: 0.01 to 5M HF 0.002 to 0.2M of metal ions capable of nucleating on and forming a porous layer comprising regions of elemental metal on the silicon surface; 0.001 to 0.7M of an oxidant selected from the group O, O, HO, the acid, ammonium or alkali metal salt of NO, SO, NO, BOand ClOor a mixture thereof. The treated silicon is suitably removed from the solution.

Method of fabricating structured particles composed of silicon or silicon-based material and their use in lithium rechargeable batteries

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Oxfordshire, United Kingdom

Yuxiong Jiang