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:
May. 17, 2016
Filed:
Aug. 20, 2012
Sibani Lisa Biswal, Houston, TX (US);
Madhuri Thakur, Houston, TX (US);
Michael S. Wong, Houston, TX (US);
Steven L. Sinsabaugh, Uniontown, OH (US);
Mark Isaacson, Santa Clara, CA (US);
Sibani Lisa Biswal, Houston, TX (US);
Madhuri Thakur, Houston, TX (US);
Michael S. Wong, Houston, TX (US);
Steven L. Sinsabaugh, Uniontown, OH (US);
Mark Isaacson, Santa Clara, CA (US);
William Marsh Rice University, Houston, TX (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
In some embodiments, the present invention provides novel methods of preparing porous silicon films and particles for lithium ion batteries. In some embodiments, such methods generally include: (1) etching a silicon material by exposure of the silicon material to a constant current density in a solution to produce a porous silicon film over a substrate; and (2) separating the porous silicon film from the substrate by gradually increasing the electric current density in sequential increments. In some embodiments, the methods of the present invention may also include a step of associating the porous silicon film with a binding material. In some embodiments, the methods of the present invention may also include a step of splitting the porous silicon film to form porous silicon particles. Additional embodiments of the present invention pertain to anode materials derived from the porous silicon films and porous silicon particles.