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:
Oct. 16, 2018
Filed:
Dec. 15, 2015
Nissan North America, Inc., Franklin, TN (US);
Xiaoguang Hao, Burnsville, MN (US);
Nissan North America, Inc., Franklin, TN (US);
Abstract
Electrodes having three dimensional current collectors provide stability to the electrode structure, improved contact between active material and the current collector, and improved charge transfer. An electrode includes a three dimensional current collector including a substantially planar base and spring-like structures extending from the substantially planar base in spaced relation along the substantially planar base. Each spring-like structure has an attachment end attached to the substantially planar base and a free distal end. Active material is layered on the three dimensional current collector, the active material filled between the spring-like structures. The active material comprises alloying particles having a high specific capacity, wherein the spring-like structures deflect as the alloying particles expand in volume due to lithiation and return to an initial position as the alloying particles contract due to delithiation.