| 2015-POL-67228 | |
| Due to the increased atomic radius of sodium-ions compared to lithium-ions, conventional graphite anodes used in secondary lithium-ion batteries are not suitable for rechargeable sodium-ion batteries. Carbon based anodes are still the primary choice for rechargeable batteries due to their superior electronic conductivity. Although a number of carbon based materials are demonstrated as anodes for sodium-ion batteries, their electrochemical performance is limited due to the sluggish diffusion of sodium-ions. In addition, synthetic methods reported are expensive and difficult to scale-up. Researchers at Purdue University have developed a new potential anode for rechargeable sodium-ion batteries. Amorphous carbon nanosheets of 10 to 100 nanometer thickness are fabricated through a scalable and inexpensive method using glucose precursor and sodium chloride. These 2D anodes have exhibited high specific capacities up to 350 mAh/g, the highest value reported for a carbon-based anode. This significantly better electrochemical performance of the carbon nanosheet electrodes is attributed to the 2D morphology and disordered microstructure, which allows for superior sodium-ion intercalation. This technology would be implemented into existing rechargeable battery systems, resulting in a more efficient and energy-dense battery. Advantages: -High specific capacity -Excellent cycling stability Potential Applications: -Battery technology -Energy storage |
|
|
|
|
Jan 11, 2021
Utility Patent
United States
(None)
(None)
Jan 9, 2020
Provisional-Patent
United States
(None)
(None)
|
|
|
Purdue Office of Technology Commercialization The Convergence Center 101 Foundry Drive, Suite 2500 West Lafayette, IN 47906 Phone: (765) 588-3475 Fax: (765) 463-3486 Email: otcip@prf.org |
