Journal article
Facile synthesis of polyaniline/titanium carbide (MXene) nanosheets/palladium nanocomposite for efficient electrocatalytic oxidation of methanol for fuel cell application
Fuel (Guildford), v 303, 121329
01 Nov 2021
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
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•One-step fabrication of MXene nanosheets/polyaniline/palladium nanocomposite electrode.•As-prepared electrode showed efficient electrocatalytic oxidation of methanol.•PANI/Pd/MXene nanocomposite depicts higher MEOR current density than Pd/MXene.
Slow methanol oxidation reaction kinetics with current electrocatalysts is the major limitation to widespread application and development in direct-methanol fuel cells (DMFCs). The present work demonstrates a highly efficient electrocatalyst for methanol electrooxidation reaction (MEOR) using polyaniline/palladium/Ti3C2Tx (PANI/Pd/MXene) nanocomposite. The PANI/Pd/MXene nanocomposite was prepared using a one-pot electrochemical co-deposition technique with a pre-anodized screen-printed electrode (SPE) under acidic electrolyte solution containing Ti3C2Tx, aniline, and palladium chloride as precursors. The PANI/Pd/MXene nanocomposite was examined using FESEM, TEM, FT-IR, XPS, and cyclic voltammetric techniques. The electrochemical response of the PANI/Pd/MXene nanocomposite shows enhanced electrocatalytic response towards the oxidation of methanol, with a peak current density of 291 mA cm−2, approximately three times higher than Pd/MXene (106 mA cm−2). Furthermore, it was also stable up to 100 cycles. The electrochemically active PANI/Pd sites are incorporated with MXene nanosheets, facilitating a more efficient MEOR. This stimulating result was achieved due to the sturdy metal–support interactions between PANI/Pd and MXene nanosheets that provide maximum methanol adsorption on the electrode surface for efficient electrocatalytic oxidation. Thus, the Ti3C2Tx support tailors the metal electrocatalyst interface and surface properties, resulting in improved electrocatalytic performance. This study highlights a facile approach for designing MXene-supported noble metal electrocatalysts for MEOR in direct-methanol fuel cells.
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Details
- Title
- Facile synthesis of polyaniline/titanium carbide (MXene) nanosheets/palladium nanocomposite for efficient electrocatalytic oxidation of methanol for fuel cell application
- Creators
- Mari Elancheziyan - Kaohsiung Medical UniversityMuthusankar Eswaran - Department of Medicinal and Applied Chemistry & Research Center for Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City 807, TaiwanChristopher E. Shuck - Drexel UniversitySellappan Senthilkumar - Vellore Institute of Technology UniversitySatheeshkumar Elumalai - Department of Material Science and Engineering, Promotion Center for Global Materials Research (PCGMR), National Cheng Kung University, Tainan 701, TaiwanRagupathy Dhanusuraman - Department of Chemistry, National Institute of Technology Puducherry, Karaikal 609609, IndiaVinoth Kumar Ponnusamy - Kaohsiung Medical University
- Publication Details
- Fuel (Guildford), v 303, 121329
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000692110800008
- Scopus ID
- 2-s2.0-85109430174
- Other Identifier
- 991019168061204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Energy & Fuels
- Engineering, Chemical