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September 16, 2025

Triazolate-Functionalized Zirconium Nitride for Air-Fed H2O2 Production with Industrial-Level Current Density

Key Points

The T-ZrN catalyst achieved a hydrogen peroxide yield of 55.6 mol·h-1·g-1, contributing to its efficiency.
A Faradaic efficiency of 93.2% was maintained during stable operation over 540 hours at 800 mA·cm-2 current density.
The production cost of hydrogen peroxide could be as low as $0.10 kg-1, pointing to strong economic viability.
This approach represents a new pathway for sustainable hydrogen peroxide manufacturing from atmospheric air.

Abstract

The electrochemical two-electron oxygen reduction reaction (2e- ORR) offers a green and energy-efficient pathway for hydrogen peroxide (H2O2) production, yet reliance on high-purity oxygen significantly limits scalability. Here, we report a triazolate-modified zirconium nitride catalyst (T-ZrN) that enables efficient and durable H2O2 electrosynthesis directly from atmospheric air. The T-ZrN catalyst achieves a high H2O2 yield of 55. 6 mol·h-1·g-1 and a Faradaic efficiency of 93. 2%, while maintaining stable operation over 540 h at an industrial-level current density of 800 mA·cm-2. Economic analysis reveals a production cost of 70 wt % H2O2 as low as 0. 10 kg-1, highlighting its commercial potential. This work presents a viable strategy for cost-effective and decentralized H2O2 manufacturing advancing sustainable chemical production technologies.

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