Effect of Chemical Structure of Lignin-Derived Carbon Materials on Electrochemical Hydrogen Peroxide Production
발표자
안수민 (한국과학기술연구원)
연구책임자
이영준 (한국과학기술연구원)
윤홍석 (한양대학교)
공동저자
안수민 (한국과학기술연구원), 이영준 (한국과학기술연구원), 윤홍석 (한양대학교)
초록
내용
Metal-free oxygen-containing carbon materials have emerged as efficient materials for electrochemical hydrogen peroxide (H2O2) production via the two-electron oxygen reduction reaction (ORR). However, scalable control of oxygen functionalities while maintaining high selectivity remains challenging. Herein, we report a scalable and sustainable Friedel-Crafts-assisted carbonization strategy to convert lignin into oxygen-containing carbon materials for H2O2 production. The crosslinking reaction stabilizes the lignin framework, significantly improving the carbon yield from 37% to 51%. The optimized lignin-derived carbon material exhibits H2O2 selectivity exceeding 95%, a high H2O2 production rate of 575.5 mmol gcat-1 h-1 at 0.4 VRHE, and stable operation over 40 h. This study demonstrates lignin as a sustainable and low-cost precursor for metal-free carbon materials and provides insights into structure-function relationships of oxygen functionalities for decentralized H2O2 production.