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Filtering by: Creator Wang, Xingfeng Creator Stucky, Galen D. Language English [eng]

Design of aqueous redox-enhanced electrochemical capacitors with high specific energies and slow self-discharge

Creator:

Chun, Sang-Eun, Evanko, Brian, Wang, Xingfeng, Vonlanthen, David, Ji, Xiulei, Stucky, Galen D., and Boettcher, Shannon W.

Abstract:

Electrochemical double-layer capacitors exhibit high power and long cycle life but have low specific energy compared with batteries, limiting applications. Redox-enhanced capacitors increase specific energy by using redox-active electrolytes that are oxidized at the positive electrode and reduced at the negative electrode during charging. Here we report characteristics of several...

Resource Type:

Article
Superior Cathode of Sodium-Ion Batteries: Orthorhombic V₂O₅ Nanoparticles Generated in Nanoporous Carbon by Ambient Hydrolysis Deposition

Creator:

Raju, Vadivukarasi, Rains, Jordan, Gates, Cooper, Luo, Wei, Wang, Xingfeng, Stickle, William F., Stucky, Galen D., and Ji, Xiulei

Abstract:

We, for the first time, demonstrate that orthorhombic V₂O₅ can exhibit superior electrochemical performance in sodium ion batteries when uniformly coated inside nanoporous carbon. The encapsulated V₂O₅ shows a specific capacity as high as 276 mAh/g, while the whole nanocomposite exhibits a capacity of 170 mAh/g. The V₂O₅/C composite was...

Resource Type:

Article