Mesoporous Boron‐Doped Carbon with Curved B4C Active Sites for Highly Efficient H2O2 Electrosynthesis in Neutral Media and Air‐Supplied Environments

• DOI: 10.1002/adma.202415712
• Publication Date: 2025-01-15T10:04:48Z
• Authors: Jae Won Choi; Ayeong Byeon; Sooyeon Kim; Chang‐Kyu Hwang; Wenjun Zhang; Jimin Lee; Won Chan Yun; Sae Yane Paek; Jin Hyeung Kim; Giho Jeong; Seung Yong Lee; Joonhee Moon; Sang Soo Han; Jae W. Lee; Jong Min Kim
• Keywords: Electrosynthesis; Carbon fibers; BORO

Abstract Hydrogen peroxide (H 2 O ) electrosynthesis via the 2e − oxygen reduction reaction (ORR) is considered as a cost‐effective and safe alternative to energy‐intensive anthraquinone process. However, in more practical environments, namely, use of neutral media air‐fed cathode slow ORR kinetics insufficient supply pose significant challenges efficient H production at high current densities. In this work, mesoporous B‐doped carbons with novel curved B 4 C active sites, synthesized carbon dioxide (CO using pore‐former agent, simultaneously achieve excellent activity improved mass transfer properties are introduced. Through combination experimental analysis theoretical calculations, it confirmed that configuration, formed by mesopores carbon, demonstrates superior selectivity for due its weaker interaction *OOH intermediates compared planar media. Moreover, facilitate suppress hydrogen evolution reaction, achieving Faradaic efficiency 86.2% 150 mA cm −2 under air‐supplied conditions, along an impressive utilization 93.6%. This approach will provide route catalyst design environment.