All‐Vanadium Redox Flow Battery Electrodes Enhanced with Nanomaterial Catalysts via Binder‐Free Electrophoretic Deposition
Abstract Two‐dimensional nano catalysts including graphene, reduced graphene oxide (rGO), MXene and exfoliated MXene (Exf. MXene) were synthesized and compared with commercial multiwalled carbon nanotubes (CNTs) for use in all‐vanadium redox flow batteries (VRFBs). These catalytic materials were coated onto carbon cloth (CC) and carbon paper (CP) electrodes via a horizontal binder‐free electrophoretic deposition (EPD) process. Amongst all samples, CNT‐modified CC exhibited the highest electrocatalytic activity, with improved redox kinetics and reduced charge transfer resistance, as confirmed by cyclic voltammetry and impedance spectroscopy. When tested in a flow cell at 100 mA cm −2 , CNT‐functionalized CC electrodes delivered ∼20% higher energy efficiency and electrolyte utilization for 200 cycles compared to pristine CC. The superior performance is attributed to the porous, conductive CNT network enabling facile electron transport. These results establish CNTs as highly effective VRFB catalysts and demonstrate EPD's promise as a scalable strategy for advanced electrode fabrication.
Authors
- Amina Ben Ayed (ORCID: https://orcid.org/0000-0002-0106-8854)
- Mina Namvari (ORCID: https://orcid.org/0000-0003-2457-1484)
- Züleyha Kudaş (ORCID: https://orcid.org/0000-0003-4997-2401)
- Nigel P. Brandon (ORCID: https://orcid.org/0000-0003-2230-8666)
- Zehra Çobandede (ORCID: https://orcid.org/0000-0002-9061-502X)
- Tülay Yılmaz İnan (ORCID: https://orcid.org/0000-0003-2956-0688)
- Reza Afshar Ghotli (ORCID: https://orcid.org/0000-0002-3264-9328)
- Serap Hayat Soytaş (ORCID: https://orcid.org/0000-0002-2114-8923)
- Koray Bahadır Dönmez (ORCID: https://orcid.org/0000-0001-5315-3148)
- Rumman Zaidi (ORCID: https://orcid.org/0000-0001-7692-6692)
- Baidaa Alkhateab (ORCID: https://orcid.org/0000-0002-8408-5501)
- Mustafa K. Bayazit (ORCID: https://orcid.org/0000-0002-3203-6601)
- Farouq Sabri Mjalli (ORCID: https://orcid.org/0000-0001-6584-8983)
- Süleyman Çelik (ORCID: https://orcid.org/0000-0002-3600-1529)
- Barun Kumar Chakrabarti (ORCID: https://orcid.org/0000-0002-0172-986X)
Institutions
- Sabancı Üniversitesi (TR)
- University of Tuzla (BA)
- National Power (United Kingdom) (GB)
- Imperial College London (GB)
- Sultan Qaboos University (OM)
Publication Details
- Journal
- ChemCatChem
- Published
- 2025-12-06
- DOI
- https://doi.org/10.1002/cctc.202501280
- Citations
- 2
- Primary Topic
- Advanced battery technologies research
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- Türkiye Bilimsel ve Teknolojik Araştırma Kurumu