Synergistic NiO–Mn2O3 Composite Thin Films via Facile Dip‐Coating: A Cost‐Effective and Stable Electrocatalyst for Methanol Oxidation in Alkaline Direct Methanol Fuel Cells.
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| Title: | Synergistic NiO–Mn |
|---|---|
| Authors: | Zafar, Ujala1 (AUTHOR), Hussain, Abrar2,3 (AUTHOR), Baloch, Mahnoor1 (AUTHOR), Shahzad, Khurram2,3 (AUTHOR), Chawraba, Khaled4,5 (AUTHOR), Mansoor, Muhammad Adil1 (AUTHOR) adil.mansoor@sns.nust.edu.pk, Iqbal, Mudassir1 (AUTHOR), Park, Sang Hyun2,3 (AUTHOR) parksh@kaeri.re.kr |
| Source: | ChemCatChem. Apr2026, Vol. 18 Issue 8, p1-16. 16p. |
| Subjects: | Thin films, Direct methanol fuel cells, Electrocatalysts, Chemical stability, Oxidation of methanol, Surface coatings |
| Abstract: | The commercialization of direct methanol fuel cells (DMFCs) is hindered by the high cost, limited durability, and sluggish kinetics of platinum‐based catalysts. To address these challenges, NiO/FTO, Mn2O3/FTO, and NiO–Mn2O3/FTO thin films were fabricated using a simple and low‐cost dip‐coating method. Structural and compositional analyses using SEM and EDS confirmed the formation of uniform and porous morphologies, while XRD and Raman spectroscopy verified the crystalline nature and phase formation of the materials. Among the prepared electrodes, the NiO– Mn2O3/FTO composite exhibited superior electrocatalytic activity for methanol oxidation, delivering a prominent anodic peak at 0.99 V and a maximum current density of 5.8 mA cm−2. At 0.65 V, it achieved a current density of 2.5 mA cm−2 in 1.4 M methanol at a scan rate of 100 mV s−1. Chronoamperometric measurements demonstrated good electrochemical stability, with 86% current retention after 2000 s. Electrochemical impedance spectroscopy further confirmed the enhanced charge‐transfer capability, showing a significantly lower charge‐transfer resistance (Rct) of 71 Ω compared with 349 Ω for NiO and 517 Ω for Mn2O3 electrodes. Overall, the NiO–Mn2O3/FTO thin film offers a cost‐effective, stable, and efficient catalytic system, demonstrating strong potential as an alternative anode material for DMFC applications. [ABSTRACT FROM AUTHOR] |
| Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193322011 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Synergistic NiO–Mn<subscript>2</subscript>O<subscript>3</subscript> Composite Thin Films via Facile Dip‐Coating: A Cost‐Effective and Stable Electrocatalyst for Methanol Oxidation in Alkaline Direct Methanol Fuel Cells. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zafar%2C+Ujala%22">Zafar, Ujala</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hussain%2C+Abrar%22">Hussain, Abrar</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Baloch%2C+Mahnoor%22">Baloch, Mahnoor</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shahzad%2C+Khurram%22">Shahzad, Khurram</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chawraba%2C+Khaled%22">Chawraba, Khaled</searchLink><relatesTo>4,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mansoor%2C+Muhammad+Adil%22">Mansoor, Muhammad Adil</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> adil.mansoor@sns.nust.edu.pk</i><br /><searchLink fieldCode="AR" term="%22Iqbal%2C+Mudassir%22">Iqbal, Mudassir</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Park%2C+Sang+Hyun%22">Park, Sang Hyun</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> parksh@kaeri.re.kr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22ChemCatChem%22">ChemCatChem</searchLink>. Apr2026, Vol. 18 Issue 8, p1-16. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Direct+methanol+fuel+cells%22">Direct methanol fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocatalysts%22">Electrocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+stability%22">Chemical stability</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation+of+methanol%22">Oxidation of methanol</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The commercialization of direct methanol fuel cells (DMFCs) is hindered by the high cost, limited durability, and sluggish kinetics of platinum‐based catalysts. To address these challenges, NiO/FTO, Mn2O3/FTO, and NiO–Mn2O3/FTO thin films were fabricated using a simple and low‐cost dip‐coating method. Structural and compositional analyses using SEM and EDS confirmed the formation of uniform and porous morphologies, while XRD and Raman spectroscopy verified the crystalline nature and phase formation of the materials. Among the prepared electrodes, the NiO– Mn2O3/FTO composite exhibited superior electrocatalytic activity for methanol oxidation, delivering a prominent anodic peak at 0.99 V and a maximum current density of 5.8 mA cm−2. At 0.65 V, it achieved a current density of 2.5 mA cm−2 in 1.4 M methanol at a scan rate of 100 mV s−1. Chronoamperometric measurements demonstrated good electrochemical stability, with 86% current retention after 2000 s. Electrochemical impedance spectroscopy further confirmed the enhanced charge‐transfer capability, showing a significantly lower charge‐transfer resistance (Rct) of 71 Ω compared with 349 Ω for NiO and 517 Ω for Mn2O3 electrodes. Overall, the NiO–Mn2O3/FTO thin film offers a cost‐effective, stable, and efficient catalytic system, demonstrating strong potential as an alternative anode material for DMFC applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/cctc.70726 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1 Subjects: – SubjectFull: Thin films Type: general – SubjectFull: Direct methanol fuel cells Type: general – SubjectFull: Electrocatalysts Type: general – SubjectFull: Chemical stability Type: general – SubjectFull: Oxidation of methanol Type: general – SubjectFull: Surface coatings Type: general Titles: – TitleFull: Synergistic NiO–Mn2O3 Composite Thin Films via Facile Dip‐Coating: A Cost‐Effective and Stable Electrocatalyst for Methanol Oxidation in Alkaline Direct Methanol Fuel Cells. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zafar, Ujala – PersonEntity: Name: NameFull: Hussain, Abrar – PersonEntity: Name: NameFull: Baloch, Mahnoor – PersonEntity: Name: NameFull: Shahzad, Khurram – PersonEntity: Name: NameFull: Chawraba, Khaled – PersonEntity: Name: NameFull: Mansoor, Muhammad Adil – PersonEntity: Name: NameFull: Iqbal, Mudassir – PersonEntity: Name: NameFull: Park, Sang Hyun IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 04 Text: Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 18673880 Numbering: – Type: volume Value: 18 – Type: issue Value: 8 Titles: – TitleFull: ChemCatChem Type: main |
| ResultId | 1 |
