Three-dimensional Nitrogen-Doped Reduced Graphene Oxide/Carbon Nanotube Composite Catalysts for Vanadium Flow Batteries
- Washington State Univ., Pullman, WA (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Washington State Univ., Pullman, WA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
The development of vanadium redox flow battery is limited by the sluggish kinetics of the reaction, especially the cathodic VO2+/VO2+ redox couples. Therefore, it is vital to develop new electrocatalyst with enhanced activity to improve the battery performance. Herein, we first synthesized the hydrogel precursor by a facile hydrothermal method. After the following carbonization, nitrogen-doped reduced graphene oxide/carbon nanotube composite was obtained. By virtue of the large surface area and good conductivey, which are ensured by the unique hybrid structure, as well as the proper nitrogen doping, the as-prepared composite presents enhanced catalytic performance toward the VO2+/VO2+ redox reaction. Here, we also demonstrated the composite with carbon nanotube loading of 2 mg/mL exhibits the highest activity and remarkable stability in aqueous solution due to the strong synergy between reduced graphene oxide and carbon nanotubes, indicating that this composite might show promising applications in vanadium redox flow battery.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1361961
- Report Number(s):
- PNNL-SA-121320; 48877; KP1704020
- Journal Information:
- Electroanalysis, Vol. 29, Issue 5; ISSN 1040-0397
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Masthead: (Adv. Mater. 25/2013)
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journal | July 2013 |
Masthead: (Adv. Mater. 28/2016)
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journal | July 2016 |
Contents: (Adv. Sci. 1/2016)
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journal | January 2016 |
Contents: (Adv. Energy Mater. 2/2011)
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Erratum to ‘Effect of zwitterions on electrochemical properties of oligoether-based electrolytes’ [Electrochim. Acta 175 (2015) 209–213]
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Hybridization Effects of Nitrogen-Doped Graphene–Carbon Nanotubes and Nano-Onion Carbons on the Electrocatalytic Activity of the Oxygen Reduction Reaction
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journal | January 2018 |
Preparation of Carbon Nanosheet by Molten Salt Route and Its Application in Catalyzing VO 2+ /VO 2 + Redox Reaction
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journal | January 2019 |
Preparation of a Nitrogen-Doped Reduced Graphene Oxide-Modified Graphite Felt Electrode for VO 2+ /VO 2 + Reaction by Freeze-Drying and Pyrolysis Method
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journal | January 2019 |
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