Two-Dimensional Tantalum Carbo-Selenide for Hydrogen Evolution
Herein, we report the synthesis of two-dimensional Ta<sub>2</sub>Se<sub>2</sub>C (2D-Ta<sub>2</sub>Se<sub>2</sub>C) nanosheets using electrochemical lithiation in multilayer Ta<sub>2</sub>Se<sub>2</sub>C followed by sonication in deionized water. Multilayer Ta<sub>2</sub>Se<sub>2</sub>C was obtained via solid-state synthesis of Fe<sub><i>x</i></sub>Ta<sub>2</sub>Se<sub>2</sub>C followed by chemical etching of Fe. 2D-Ta<sub>2</sub>Se<sub>2</sub>C exhibited promising electrocatalytic activity for the hydrogen evolution reaction from water compared to multilayer Ta<sub>2</sub>Se<sub>2</sub>C and 2D-TaSe<sub>2</sub>. 2D-Ta<sub>2</sub>Se<sub>2</sub>C showed an overpotential at 10 mA·cm<sup>-2</sup> (η<sub>10</sub>) of 264 mV, a Tafel slope of 91 mV·dec<sup>-1</sup>, and an electrochemically active surface area of 17.61 m<sub>ECSA</sub><sup>2</sup>·g<sub>catalyst</sub><sup>-1</sup>. The high performance could be attributed to the large surface area of single sheets which hence maximizes the number of exposed catalytic sites and increased density of vacancies, observed with transmission electron microscopy, during synthesis and processing.
Authors
- Michael Naguib (ORCID: https://orcid.org/0000-0002-4952-9023)
- Jeffrey J. Urban (ORCID: https://orcid.org/0000-0003-4909-2869)
- M. M. Montemore (ORCID: https://orcid.org/0000-0002-4157-1745)
- Ahmad Majed (ORCID: https://orcid.org/0000-0002-5642-4158)
- Elham Loni (ORCID: https://orcid.org/0000-0002-2281-4553)
- Anika Tabassum (ORCID: https://orcid.org/0000-0003-2411-6369)
- Chaochao Dun (ORCID: https://orcid.org/0000-0002-3215-6478)
- Per O. Å. Persson (ORCID: https://orcid.org/0000-0001-9140-6724)
- Karamullah Eisawi (ORCID: https://orcid.org/0000-0002-9031-4809)
- Hari Hara Sudhan Thangavelu (ORCID: https://orcid.org/0009-0009-1429-0137)
- Shengjie Zhang
Institutions
- Linköping University (SE)
- Tulane University (US)
- Lawrence Berkeley National Laboratory (US)
Publication Details
- Journal
- ACS Nano
- Published
- 2025-01-16
- DOI
- https://doi.org/10.1021/acsnano.4c09903
- Citations
- 13
- Primary Topic
- MXene and MAX Phase Materials
- Type
- article
- Field-Weighted Citation Impact
- 6.73
Funders
- National Science Foundation
- U.S. Department of Energy
- Tulane University
- Stiftelsen för Strategisk Forskning
- Vetenskapsrådet
- Stiftelsen för Strategisk Forskning
- Office of Science
- Division of Materials Research
- Division of Chemistry
- Basic Energy Sciences