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Updated: Sep 10, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Heterotriphase crystalline-amorphous cobalt boride catalysts: accelerating surface reconstruction for efficient
Yijun Liu1, Yupeng Wang2, Zhen Zhang1
1College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China. inorgxiaozhenyu@163.com.
Abstract:
We report crystalline Co2B and CoB (c-Co2B and c-CoB)-involved amorphous CoBx (a-CoBx) hollow-microspheres (CoB0.8) for enhanced OER performance in alkaline seawater electrolytes. MOF-derived transition metal borides (CoB0.8) possess excellent crystalline-amorphous interfaces, synergistically enhancing charge transfer kinetics and active-site accessibility. Electrochemical analysis reveals a low overpotential of 232 mV at 10 mA cm-2 in 1.0 M KOH seawater and stability tests over 75 h at 10 mA cm-2, outperforming most reported Co-based catalysts. In situ Raman spectroscopy confirms that Co-B electronic coupling accelerates the electrochemical reconstruction to highly oxidized cobalt species (CoOOH) at ultralow potential.
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