Efficient Electrocatalytic Ammonia Synthesis via Spirulina Biomass Based on High-Entropy Alloy.

ABSTRACT: To address persistent challenges of low ammonia yield and Faradaic efficiency (FE) in electrocatalytic nitrogen reduction, this work pioneers a breakthrough strategy utilizing nitrogen-enriched spirulina biomass as the nitrogen source coupled with high-entropy alloy (HEA) catalysts. This novel electrocatalytic synthesis route establishes a sustainable pathway for green ammonia production. The MnFeNiCuAl and MnFeNiCuCo HEAs were synthesized via a coprecipitation method. Structural analysis reveals that MnFeNiCuAl exhibits a pure face-centered cubic (FCC) phase, and the Al element incorporation suppresses high-temperature sintering and mitigates compositional segregation. Its oxygen vacancy concentration is higher than that of the MnFeNiCuCo HEO, which can optimize the multielectron transfer

SUBMITTER: Zhu X 

PROVIDER: S-EPMC12631397 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature