Journal article
Rational Design of Titanium Carbide MXene Electrode Architectures for Hybrid Capacitive Deionization
Energy & environmental materials (Hoboken, N.J.), Vol.3(3), pp.398-404
Sep 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Intercalation redox materials have shown great promise for efficient water desalination due to available faradaic gallery sites. Symmetric capacitive deionization (CDI) cells previously demonstrated using MXenes were often limited in their salt adsorption capacity (SAC) and voltage window of operation. In this study, current collector‐ and binder‐free Ti3C2Tx MXene electrode architectures are designed with porous carbon as the positive electrode to demonstrate hybrid CDI (HCDI) operation. Furthermore, MXene current collectors are fabricated by employing a scalable doctor blade coating technique and subsequently spray coating a layer of a small flake MXene dispersion. Hydrophilic redox‐active galleries of MXenes are capable of intercalating a variety of aqueous cations including Na+, K+, and Mg2+ ions, showing volumetric capacitances up to 250 F cm‐3. As a result, a salt removal capacity of 39 mg g‐1 with decent cycling stability is achieved. This study opens new avenues for developing freestanding, binder‐ and additive‐free MXene electrodes for HCDI applications.
Efficient hybrid capacitive deionization employing faradaic MXene electrode combined with porous carbon electrode
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Details
- Title
- Rational Design of Titanium Carbide MXene Electrode Architectures for Hybrid Capacitive Deionization
- Creators
- Samantha Buczek - Drexel UniversityMichael L Barsoum - Drexel UniversitySimge Uzun - Drexel UniversityNarendra Kurra - Drexel UniversityRyan Andris - Drexel UniversityEkaterina Pomerantseva - Drexel UniversityKhaled A Mahmoud - Hamad Bin Khalifa University (HBKU)Yury Gogotsi - Drexel University
- Publication Details
- Energy & environmental materials (Hoboken, N.J.), Vol.3(3), pp.398-404
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- Qatar National Research Fund NPRP (9‐254‐2‐120) National Science Foundation (CMMI‐1635233)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Identifiers
- 991014970034304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary