| Autor: |
Liangliang Feng, Yuhang Li, Changle Fu, Dongming Li, Jianfeng Huang, Hongyan Yin, Liyun Cao, Danyang He |
| Předmět: |
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| Zdroj: |
New Journal of Chemistry; 10/14/2023, Vol. 47 Issue 38, p17657-17665, 9p |
| Abstrakt: |
The development of single-atom catalysts (SACs) offers a novel strategy to minimize catalyst loadings while maintaining high electrocatalytic activity. Herein, a novel Ni/Ni single atom anchored porous graphitic nanocarbon (Ni/Ni-SA--NC) is synthesized by an alkali-assisted etching approach combined with post-calcination protocol. It is manifested that the in situ formed AlN not only can function as a template for the generation of porous nanoarchitecture but can also serve as an anchoring agent for synthesized Ni--Nx species. Benefitting from the high specific surface area, abundant electroactive sites, and highly conductive graphitic carbon matrix, the fabricated Ni/Ni-SA--NC displays superior HER performances with a quite low overpotential of 159 mV to achieve a current density of 10 mA cm-2, far outperforming the Ni/C counterpart and long-term stability for over 50 h with unnoticeable current fluctuation in alkaline medium. Our work inspires the exploration of remarkable SACs electrocatalysts for cost-effective and large-scale hydrogen production in the energy conversion and storage field. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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