MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reaction
This study presents the synthesis and characterization of MXene/Li _4 Mn _5 O _12 nanocomposite electrocatalysts for enhanced oxygen evolution reaction (OER) performance. Through a systematic synthesis approach, we successfully integrated Ti _3 C _2 T _x MXene with Li _4 Mn _5 O _12 in varying compo...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | Nano Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2632-959X/adc619 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850186705090379776 |
|---|---|
| author | Ritu Raj Sunil Kumar Vikash Kumar Krishna Kanta Haldar Gajendra Prasad Singh |
| author_facet | Ritu Raj Sunil Kumar Vikash Kumar Krishna Kanta Haldar Gajendra Prasad Singh |
| author_sort | Ritu Raj |
| collection | DOAJ |
| description | This study presents the synthesis and characterization of MXene/Li _4 Mn _5 O _12 nanocomposite electrocatalysts for enhanced oxygen evolution reaction (OER) performance. Through a systematic synthesis approach, we successfully integrated Ti _3 C _2 T _x MXene with Li _4 Mn _5 O _12 in varying compositions. The optimized MLMO50 nanocomposite demonstrated exceptional electrocatalytic activity, requiring only 282 mV overpotential to achieve 10 mA cm ^−2 current density, significantly outperforming pristine MXene (415 mV) and Li _4 Mn _5 O _12 (380 mV). The composite exhibited a favorable Tafel slope of 97 mV dec ^−1 and remarkably low charge transfer resistance of 116.4 Ω, indicating enhanced reaction kinetics. Comprehensive characterization using XRD, ATR-FTIR, FESEM, and XPS confirmed the successful synthesis and revealed the intimate interfacial interaction between MXene sheets and Li _4 Mn _5 O _12 . The MLMO50 catalyst showed excellent stability, maintaining performance over 3000 consecutive cycles with minimal overpotential shift (13.68 mV) and demonstrating robust durability during 15 h chronoamperometry testing. This work provides valuable insights into designing efficient composite electrocatalysts for clean energy applications. |
| format | Article |
| id | doaj-art-cd288ac096d34610911d223f7c5c44a2 |
| institution | OA Journals |
| issn | 2632-959X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nano Express |
| spelling | doaj-art-cd288ac096d34610911d223f7c5c44a22025-08-20T02:16:17ZengIOP PublishingNano Express2632-959X2025-01-016202500210.1088/2632-959X/adc619MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reactionRitu Raj0https://orcid.org/0009-0001-8860-8760Sunil Kumar1Vikash Kumar2https://orcid.org/0000-0003-1874-9119Krishna Kanta Haldar3https://orcid.org/0000-0002-0675-8299Gajendra Prasad Singh4https://orcid.org/0000-0002-9593-306XDepartment of Metallurgical and Materials Engineering, Central University of Jharkhand , Ranchi, 835205, IndiaDepartment of Energy Science and Engineering, IIT Delhi , 110016, IndiaINL - International Iberian Nanotechnology Laboratory , Av Mte José Veiga s/n, 4715-330 Braga, PortugalDepartment of Chemistry, Central University of Punjab , Bathinda, 151401, IndiaDepartment of Metallurgical and Materials Engineering, Central University of Jharkhand , Ranchi, 835205, IndiaThis study presents the synthesis and characterization of MXene/Li _4 Mn _5 O _12 nanocomposite electrocatalysts for enhanced oxygen evolution reaction (OER) performance. Through a systematic synthesis approach, we successfully integrated Ti _3 C _2 T _x MXene with Li _4 Mn _5 O _12 in varying compositions. The optimized MLMO50 nanocomposite demonstrated exceptional electrocatalytic activity, requiring only 282 mV overpotential to achieve 10 mA cm ^−2 current density, significantly outperforming pristine MXene (415 mV) and Li _4 Mn _5 O _12 (380 mV). The composite exhibited a favorable Tafel slope of 97 mV dec ^−1 and remarkably low charge transfer resistance of 116.4 Ω, indicating enhanced reaction kinetics. Comprehensive characterization using XRD, ATR-FTIR, FESEM, and XPS confirmed the successful synthesis and revealed the intimate interfacial interaction between MXene sheets and Li _4 Mn _5 O _12 . The MLMO50 catalyst showed excellent stability, maintaining performance over 3000 consecutive cycles with minimal overpotential shift (13.68 mV) and demonstrating robust durability during 15 h chronoamperometry testing. This work provides valuable insights into designing efficient composite electrocatalysts for clean energy applications.https://doi.org/10.1088/2632-959X/adc619MXene/Li4Mn5O12nanocompositeelectrocatalystTafelOER |
| spellingShingle | Ritu Raj Sunil Kumar Vikash Kumar Krishna Kanta Haldar Gajendra Prasad Singh MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reaction Nano Express MXene/Li4Mn5O12 nanocomposite electrocatalyst Tafel OER |
| title | MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reaction |
| title_full | MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reaction |
| title_fullStr | MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reaction |
| title_full_unstemmed | MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reaction |
| title_short | MXene/Li4Mn5O12 nanocomposite electrocatalysts for boosting oxygen evolution reaction |
| title_sort | mxene li4mn5o12 nanocomposite electrocatalysts for boosting oxygen evolution reaction |
| topic | MXene/Li4Mn5O12 nanocomposite electrocatalyst Tafel OER |
| url | https://doi.org/10.1088/2632-959X/adc619 |
| work_keys_str_mv | AT rituraj mxeneli4mn5o12nanocompositeelectrocatalystsforboostingoxygenevolutionreaction AT sunilkumar mxeneli4mn5o12nanocompositeelectrocatalystsforboostingoxygenevolutionreaction AT vikashkumar mxeneli4mn5o12nanocompositeelectrocatalystsforboostingoxygenevolutionreaction AT krishnakantahaldar mxeneli4mn5o12nanocompositeelectrocatalystsforboostingoxygenevolutionreaction AT gajendraprasadsingh mxeneli4mn5o12nanocompositeelectrocatalystsforboostingoxygenevolutionreaction |