Journal article
Two-dimensional MXene based anodic slurry electrodes for vanadium redox flow batteries
Electrochimica acta, v 520(C), p145865
20 Apr 2025
Abstract
Vanadium redox flow batteries (VRFBs) are a promising energy storage technology with potential toward supporting the transition to green energy. However, optimizing electrode materials to improve battery performance remains a challenge. Slurry electrodes have recently gained attention for their advantages over conventional carbonaceous electrodes but require further investigation for effective utilization in flow battery systems. To address these issues, we investigated two-dimensional (2D) Ti3C2Tx MXene slurry electrodes in VRFBs. We evaluated different concentrations (0.25, 0.5, and 1.0 wt.%) of MXene-based anodic slurry electrodes through comprehensive flow battery tests, including polarization, charge-discharge cycling, and electrochemical impedance spectroscopy. Rheological and hydrodynamic measurements were also conducted to analyze the physical properties of the slurry electrodes. Our findings reveal a 70 % higher voltage and 46 % increase in depth of discharge with the addition of 0.5 wt.% MXene slurry (MX_0.5) compared to the baseline graphite particle suspension electrode. Additionally, MX_0.5 exhibited enhanced rheological and hydrodynamic properties, leading to improved flow characteristics and a significant reduction in pressure drop within the battery system. The enhanced performance of Ti3C2Tx was attributed to its unique 2D structure, high surface area, and specific surface chemistry, which collectively enhanced the electrochemical properties of the slurry electrodes.
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Details
- Title
- Two-dimensional MXene based anodic slurry electrodes for vanadium redox flow batteries
- Creators
- Ali Vala Mizrak - Electrochemical Energy Systems Laboratory, Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA 19104 USAHuseyin Engin Sever - Drexel UniversityJonathan C. Ehring - Drexel University, Mechanical Engineering and MechanicsKyle Matthews - A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104 USAIryna Roslyk - Drexel University, Materials Science and EngineeringAlex Inman - Drexel UniversityEmin Caglan Kumbur - Drexel University, Mechanical Engineering and Mechanics
- Publication Details
- Electrochimica acta, v 520(C), p145865
- Publisher
- Elsevier Ltd
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; Mechanical Engineering and Mechanics; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:001430674100001
- Scopus ID
- 2-s2.0-85217926910
- Other Identifier
- 991022028077104721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Electrochemistry