NiS/VS₂ Heterostructure Catalyst

Outperforms Pt/C at High Current

Dual-site synergy breaks scaling relations, delivering better alkaline HER performance than Pt/C at high current densities with negligible decay over long-term operation.

Haider, Rizwan · Muhammad Imran, Abdullah · Feng, Yifeng · Deng, Ruiqu · Liang, Wu · He, Yijun · Yuan, Xianxia

Small 2026

Specifications

Overpotential

{'zh': '279', 'en': '279'} mV

Overpotential

{'zh': '222', 'en': '222'} mV

Stability

{'zh': '140', 'en': '140'} h

Advantages

Sustained stability

Negligible change in current density over 140 h of continuous operation at -0.2 VRHE indicates excellent structural stability in alkaline environment, suitable for industrial continuous operation.

Dual-site synergy

V sites expedite water dissociation, Ni sites promote OH desorption, and together they streamline hydrogen coupling and release via the Volmer-Heyrovsky pathway, breaking scaling relations.

Applications

• Alkaline Water Electrolysis：Serves as a high-efficiency, stable HER cathode at high current densities, reducing energy consumption.
• Industrial HER Catalysts：Replaces precious-metal Pt/C with lower cost and superior performance.
• Electrolyzer Membrane Electrodes：Directly supported on nickel foam, ready for integration into membrane electrode assemblies.