Nitrogen, sulfur co-doped carbon coated zinc sulfide for efficient hydrogen peroxide electrosynthesis

作者：Chengxiang Dai, Rongrong Li, Haichuan Guo, Shuqin Liang, Hangjia Shen, Tiju Thomas, Minghui Yang · 发表于：Dalton Transactions · 年份：2021 · DOI：10.1039/d0dt04348f · 被引用次数：17 · 研究领域：Electrocatalysts for Energy Conversion、Advanced battery technologies research、Perovskite Materials and Applications

Oxygen electroreduction (ORR) via a two-electron pathway is a promising alternative for hydrogen peroxide (H2O2) synthesis in small-scale applications. In this work, nitrogen and sulfur co-doped carbon coated zinc sulfide nanoparticles (ZnS@C) are synthesized using facile high-temperature annealing. In an alkaline electrolyte, the presence of ZnS suppresses the reduction of H2O2 during the ORR and contributes to high H2O2 selectivity (∼90%) over a wide potential range (0.40-0.80 V). Continuous generation of H2O2 is in turn achieved at an outstanding rate of 1.485 mol gcat.-1 h-1 with a faradaic efficiency of 93.7%.