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Two-Dimensional Tantalum Carbo-Selenide for Hydrogen Evolution

Elham LoniDepartment of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United StatesAhmad MajedDepartment of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United StatesShengjie ZhangDepartment of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United StatesHari Hara Sudhan ThangaveluDepartment of Physics, Chemistry and Biology, Linköping University, Linköping SE-581 83, SwedenChaochao DunThe Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United StatesAnika TabassumDepartment of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United StatesKaramullah EisawiDepartment of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United StatesJeffrey J. UrbanThe Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United StatesPer O. Å. PerssonDepartment of Physics, Chemistry and Biology, Linköping University, Linköping SE-581 83, SwedenM. M. MontemoreDepartment of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United StatesMichael NaguibDepartment of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United States

2025en

ABI

Annotatsiya

Herein, we report the synthesis of two-dimensional Ta2Se2C (2D-Ta2Se2C) nanosheets using electrochemical lithiation in multilayer Ta2Se2C followed by sonication in deionized water. Multilayer Ta2Se2C was obtained via solid-state synthesis of FexTa2Se2C followed by chemical etching of Fe. 2D-Ta2Se2C exhibited promising electrocatalytic activity for the hydrogen evolution reaction from water compared to multilayer Ta2Se2C and 2D-TaSe2. 2D-Ta2Se2C showed an overpotential at 10 mA·cm–2 (η10) of 264 mV, a Tafel slope of 91 mV·dec–1, and an electrochemically active surface area of 17.61 mECSA2·gcatalyst–1. 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.

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Identifikatorlar

DOI: 10.1021/acsnano.4c09903

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