Flexible asymmetric electrochemical cells using nano graphene platelet as an electrode material
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.
- Research Organization:
- Nanotek Instruments, Inc., Dayton, OH (United States)
- Sponsoring Organization:
- USDOE
- Assignee:
- Nanotek Instruments, Inc. (Dayton, OH)
- Patent Number(s):
- 9,979,060
- Application Number:
- 15/463,531
- OSTI ID:
- 1532087
- Country of Publication:
- United States
- Language:
- English
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