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. 02, 2017
Filed:
Jan. 25, 2010
Zhenning Yu, Fairborn, OH (US);
Jinjun Shi, Columbus, OH (US);
Chen-guang Liu, Fairborn, OH (US);
Bor Z. Jang, Centerville, OH (US);
Aruna Zhamu, Centerville, OH (US);
Zhenning Yu, Fairborn, OH (US);
Jinjun Shi, Columbus, OH (US);
Chen-guang Liu, Fairborn, OH (US);
Bor Z. Jang, Centerville, OH (US);
Aruna Zhamu, Centerville, OH (US);
Nanotek Instruments, Inc., Dayton, OH (US);
Abstract
A flexible, asymmetric electrochemical cell comprising: (A) A sheet of graphene paper as first electrode comprising nano graphene platelets having a platelet thickness less than 1 nm, wherein the first electrode has electrolyte-accessible pores; (B) A thin-film or paper-like first separator and electrolyte; and (C) A thin-film or paper-like second electrode which is different in composition than the first electrode; wherein the separator is sandwiched between the first and second electrode to form a flexible laminate configuration. The asymmetric supercapacitor cells with different NGP-based electrodes exhibit an exceptionally high capacitance, specific energy, and stable and long cycle life.