In Situ Formation of Multi-Principal Element Oxide on a Bulk Nanoporous Intermetallic Alloy for Ultra-Efficient Hydrogen Production at Ampere-Level Current Density DOI Creative Commons
Xiang Gao, Wenyu Lü, Shuo Shuang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

Developing highly efficient and durable electrocatalysts for hydrogen production via water splitting remains a pivotal challenge sustainable energy. In this work, we present bulk nanoporous C15 intermetallic alloy synthesized through electrodealloying of eutectic multiprincipal element precursor. Unlike conventional metallic nanostructures, catalyst features an ultrathin oxide (MPEO) layer, which generates abundant active sites achieves exceptional evolution reaction (HER) activity, surpassing most reported catalysts. Crucially, the material demonstrates unprecedented stability at industrial-level current densities (1 A/cm2 396 mV), enabled by operando amorphization MPEO layer during prolonged operation. This structural stabilizes catalyst-electrolyte interface while retaining intrinsic activity. Our findings redefine design principles robust, high-performance integrating architectures with self-optimizing surface chemistry.

Language: Английский

Synergistic Teamwork of Non-Noble Metals: The Design of Active and Robust Intermetallic Compounds for Hydrogen Evolution Reaction in Industrial Alkaline Water Electrolysis DOI
Kai Wei,

Liwen Cao,

Ziqing Li

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

In this work, we have demonstrated a double-boosting strategy that can significantly enhance the stability of hydrogen evolution reaction (HER) for non-noble-metal-based electrocatalysts operating in harsh industrial conditions (6.0 M KOH, 343 K). With incorporation early-transition-metal and main-group elements Ni metal, ternary TiAlNi2 TiNi2Sn both exhibit higher robust durability HER than binary AlNi metal due to strong bonding states Ti-Ni Al/Sn-Ni below Fermi level. Additionally, they display remarkable efficiency, which only overpotentials ca. -22 -67 mV are required reach current density 10 mA/cm2 (η10) 1.0 KOH. Theoretical calculation revealed their outstanding activities (outperforming commercial Pt/C, Pt = 5 wt %, η10 -76 mV) be attributed synergistic teamwork among Ti, Ni, Al/Sn elements. The at 500 much smaller foam. More importantly, show steady performances over period 400 h high (400 mA/cm2) conditions.

Language: Английский

Citations

0
Oxygen vacancy engineering of core-shelled Nickel-Molybdenum dioxide nanoparticles doped by Ruthenium atoms for overall anion exchange membrane water electrolysis DOI
Yuqing Tang, Tao Zhou, Shui Yu

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 695, P. 137754 - 137754

Published: May 1, 2025

Language: Английский

Citations

0
In Situ Formation of Multi-Principal Element Oxide on a Bulk Nanoporous Intermetallic Alloy for Ultra-Efficient Hydrogen Production at Ampere-Level Current Density DOI Creative Commons
Xiang Gao, Wenyu Lü, Shuo Shuang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

Developing highly efficient and durable electrocatalysts for hydrogen production via water splitting remains a pivotal challenge sustainable energy. In this work, we present bulk nanoporous C15 intermetallic alloy synthesized through electrodealloying of eutectic multiprincipal element precursor. Unlike conventional metallic nanostructures, catalyst features an ultrathin oxide (MPEO) layer, which generates abundant active sites achieves exceptional evolution reaction (HER) activity, surpassing most reported catalysts. Crucially, the material demonstrates unprecedented stability at industrial-level current densities (1 A/cm2 396 mV), enabled by operando amorphization MPEO layer during prolonged operation. This structural stabilizes catalyst-electrolyte interface while retaining intrinsic activity. Our findings redefine design principles robust, high-performance integrating architectures with self-optimizing surface chemistry.

Language: Английский

Citations

0