N, O Co-doped carbon felt for high-performance all-vanadium redox flow battery

Huang, Yuqing; Deng, Qingqing; Wu, Xiongwei; Wang, Shuangyin

doi:10.1016/j.ijhydene.2016.04.004

Cited by 68 publications

(59 citation statements)

References 29 publications

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“…A specific nitrogen-vanadium interaction taking into account the bonding state of the quaternary nitrogen, its electronic environment and the charge of the reactant ions was proposed as the pivotal step of the catalyzed reaction. Huang et al achieved codoping of carbon felt with nitrogen and oxygen in a plasma [366]. Reduced charge transfer hindrance of the VO 2+ /VO + 2 redox reaction could be deduced from the CVs and this was corroborated with impedance data.…”

Section: Mechanical Thermal or Chemical Surface Treatmentmentioning

confidence: 81%

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Holze

2018

Batteries

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Flow batteries (also: redox batteries or redox flow batteries RFB) are briefly introduced as systems for conversion and storage of electrical energy into chemical energy and back. Their place in the wide range of systems and processes for energy conversion and storage is outlined. Acceleration of electrochemical charge transfer for vanadium-based redox systems desired for improved performance efficiency of these systems is reviewed in detail; relevant data pertaining to other redox systems are added when possibly meriting attention. An attempt is made to separate effects simply caused by enlarged electrochemically active surface area and true (specific) electrocatalytic activity. Because this requires proper definition of the experimental setup and careful examination of experimental results, electrochemical methods employed in the reviewed studies are described first.

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Section: Mechanical Thermal or Chemical Surface Treatmentmentioning

confidence: 81%

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Holze

2018

Batteries

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“…For example, MWCNTs [5], graphene nanosheets and carbon nanofibers [6,7], functionalization of carbon surface as N-and Ocontaining groups [8], metals such as Pt [6], Ir [9] and Bi [10] and metal oxides Mn 3 O 4 [11,12], WO 3 [13,14], TiO 2 [15], CeO 2 [16], PbO 2 [17], and Nb 2 O 5 [18] were deposited onto the CF supports to prepare modified electrodes. However, although all this research demonstrated an improvement in electrochemical kinetics, the enhanced power density is rarely discussed in the literature as a complementary performance evaluation to the charge/discharge experiments.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

High-power positive electrode based on synergistic effect of N- and WO3 -decorated carbon felt for vanadium redox flow batteries

Hosseini

Mousavihashemi

Murcia-López

et al. 2018

Carbon

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Although Vanadium Redox Flow Battery (VRFB) is well suitable for grid-scale application, their power-related cost must be reduced in order to boost the technology to the market, allowing their widespread commercialization. One effective way to make the VRFB a competitive and viable solution could be through the new strategies for improving the electrocatalytic activity of the electrodes with enhanced electrolyte/electrode interface characteristics. The greatly effective and enhanced-electron transfer could increase the current density with the decrement of the stack size. Herein, we report the synergistic effect demonstrated by N-and WO 3 -decorated carbon-based positive electrode, named HTNW electrode, which demonstrates the feasibility of achieving: i) enhanced electrocatalytic activity, indicating high rate towards VO 2+ /VO 2 + couple (promotion of oxygen and electron transfer processes), ii) decrement of the electron-transfer resistance from 75.62 Ω to 12.4 Ω for the pristine electrode and HTNW electrodes, respectively; iii) 51% of the electrolyte utilization ratio at high rates (i.e. 200 mA cm -2 ) with 70% of energy efficiency ; iv) increment of more than 50% of the power-peak in comparison with HT electrode.

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“…and unconventional methods (plasma treatment, gamma-ray irradiation, etc.) [11,[23][24][25][26][27] . These technologies have been proved to increase more active sites for redox reactions.…”

Section: Introductionmentioning

confidence: 99%

KHCO3 activated carbon microsphere as excellent electrocatalyst for VO2+/VO2+ redox couple for vanadium redox flow battery

Zhao

et al. 2019

Journal of Energy Chemistry

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N, O Co-doped carbon felt for high-performance all-vanadium redox flow battery

Cited by 68 publications

References 29 publications

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

High-power positive electrode based on synergistic effect of N- and WO3 -decorated carbon felt for vanadium redox flow batteries

KHCO3 activated carbon microsphere as excellent electrocatalyst for VO2+/VO2+ redox couple for vanadium redox flow battery

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