| Autor: |
Miaomiao Pei, Xiaowei Song, Haihong Zhong, Luis Alberto Estudillo-Wong, Yingchun Gao, Tongmengyao Jin, Ju Huang, Yali Wang, Jun Yang, Yongjun Feng |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Catalysts; Volume 12; Issue 12; Pages: 1650 |
| ISSN: |
2073-4344 |
| DOI: |
10.3390/catal12121650 |
| Popis: |
Heterostructured non-precious metal phosphides have attracted increasing attention in the development of high-performance catalysts for hydrogen evolution reaction (HER), particularly in acidic media. Herein, a catalyst composed of ternary Ni5P4-NiP2-Ni2P nanocomposites and N-doped carbon nanotubes/carbon particulates (Ni5P4-NiP2-Ni2P/NC) was prepared from a Ni-containing hybrid precursor through approaches of a successive carbonization and phosphating reaction. Benefiting from the synergistic effect from three-component nickel phosphides and the support role of porous carbon network, the Ni5P4-NiP2-Ni2P/N-doped carbon catalyst presents the promising HER performance with overpotentials of 168 and 202 mV at the current density of 10 mA cm−2 and Tafel slopes of 69.0 and 74 mV dec−1 in both acidic and alkaline solutions, respectively, which surpasses the Ni2P/N-doped carbon counterpart. This work provides an effective strategy for the preparation and development of highly efficient HER non-precious metal electrocatalysts by creating heterostructure in acidic and alkaline media. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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