| Autor: |
Sining Yun, Zan Gao, Tianxiang Yang, Menglong Sun, Guangping Yang, Ke Wang, Zhiguo Wang, Shuangxi Yuan, Mengmeng Zhang |
| Předmět: |
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| Zdroj: |
Advanced Functional Materials; 4/25/2024, Vol. 34 Issue 17, p1-14, 14p |
| Abstrakt: |
Constructing Mott-Schottky heterojunctions in nanohybrids is an effective strategy for facilitating electron transfer and optimizing the electronic structure of active sites; however, challenges remain. Herein, a selenium-induced phase separation strategy is proposed and successfully construct NiSe2/MoSe2 Mott-Schottky heterojunctions on N-doped brain coral carbon nanospheres (N-BCCSs). Owing to built-in electric fields, optimized electronic density, and unique nanoflake/sphere structures, the designed NiSe2/MoSe2@N-BCCSs carbon-based Mott-Schottky catalysts achieved satisfactory electrocatalytic performance. When serving as a counter electrode for the triiodide reduction reaction (IRR), a power conversion efficiency of 8.49% is obtained, which outperformed that of conventional Pt electrodes (7.80%). When the NiSe2/MoSe2@N-BCCSs are used as electrocatalysts for the hydrogen evolution reaction (HER), their overpotential (η[sub 10]) is as low as 119 mV, which is significantly better than that of other transition-metal selenides. This research demonstrates a new concept for constructing Mott-Schottky heterojunctions and provides a new direction for investigating multifunctional carbon-based composites. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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