Journal of the American Chemical Society· 2014Q1
Self-Supported Nanoporous Cobalt Phosphide Nanowire Arrays: An Efficient 3D Hydrogen-Evolving Cathode over the Wide Range of pH 0–14
- 2,368citations
- Q1SCImago
- 2014year
Short summary
Nanoporous cobalt phosphide nanowire arrays (CoP/CC) fabricated on carbon cloth efficiently produce hydrogen across all pH levels (0-14) with a low onset overpotential of 38 mV and sustained activity for 8000 s in acidic conditions.
AI-generated from the title and abstract; the full text is not read.
Key points
- Fabricated self-supported nanoporous cobalt phosphide nanowire arrays on carbon cloth (CoP/CC).
- Achieved a low onset overpotential of 38 mV and a Tafel slope of 51 mV dec(-1) for hydrogen evolution.
- Demonstrated sustained catalytic activity for at least 8000 s in acidic media.
- Showed excellent catalytic performance and durability across a wide pH range (0-14).
AI-generated from the title and abstract; the full text is not read.
Abstract
In this Communication, we report the topotactic fabrication of self-supported nanoporous cobalt phosphide nanowire arrays on carbon cloth (CoP/CC) via low-temperature phosphidation of the corresponding Co(OH)F/CC precursor. The CoP/CC, as a robust integrated 3D hydrogen-evolving cathode, shows a low onset overpotential of 38 mV and a small Tafel slope of 51 mV dec(-1), and it maintains its catalytic activity for at least 80,00 s in acidic media. It needs overpotentials (η) of 67, 100, and 204 mV to attain current densities of 10, 20, and 100 mA cm(-2), respectively. Additionally, this electrode offers excellent catalytic performance and durability under neutral and basic conditions.
The authors' abstract, as published at the source. Journal of the American Chemical Society, 2014 · DOI ↗
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Field: Renewable Energy, Sustainability and the Environment
Renewable Energy, Sustainability and the EnvironmentEnergy