The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2014
Filed:
Apr. 08, 2011
Mino Green, London, GB;
Feng-ming Liu, Reading, GB;
Yuxiong Jiang, Abingdon, GB;
Valerie Elizabeth Dawn Stevens, Middlesex, GB;
Benjamin Odarkwei Mills-lamptey, Enfield, GB;
Mino Green, London, GB;
Feng-Ming Liu, Reading, GB;
Yuxiong Jiang, Abingdon, GB;
Valerie Elizabeth Dawn Stevens, Middlesex, GB;
Benjamin Odarkwei Mills-Lamptey, Enfield, GB;
Nexeon Ltd., Oxfordshire, GB;
Abstract
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.