Choi, Jae Won Byeon, Ayeong Kim, Sooyeon Hwang, Chang-Kyu Zhang, Wenjun Lee, Jimin Yun, Won Chan Paek, Sae Yane Kim, Jin Hyeung Jeong, Giho Lee, Seung Yong Moon, Joonhee Han, Sang Soo Lee, Jae W. Kim, Jong Min 2025-03-22T15:00:31Z 2025-03-22T15:00:31Z 2025-03-19 2025-03 0935-9648 https://pubs.kist.re.kr/handle/201004/152034 Hydrogen peroxide (H2O2) electrosynthesis via the 2e(-) oxygen reduction reaction (ORR) is considered as a cost-effective and safe alternative to the energy-intensive anthraquinone process. However, in more practical environments, namely, the use of neutral media and air-fed cathode environments, slow ORR kinetics and insufficient oxygen supply pose significant challenges to efficient H2O2 production at high current densities. In this work, mesoporous B-doped carbons with novel curved B4C active sites, synthesized via a carbon dioxide (CO2) reduction using a pore-former agent, to simultaneously achieve excellent 2e(-) ORR activity and improved mass transfer properties are introduced. Through a combination of experimental analysis and theoretical calculations, it is confirmed that the curved B4C configuration, formed by mesopores in the carbon, demonstrates superior selectivity and activity for 2e(-) ORR due to its weaker interaction with *OOH intermediates compared to planar B4C in neutral media. Moreover, the mesopores facilitate oxygen supply and suppress the hydrogen evolution reaction, achieving a Faradaic efficiency of 86.2% at 150 mA cm(-2) under air-supplied conditions, along with an impressive O-2 utilization efficiency of 93.6%. This approach will provide a route to catalyst design for efficient H2O2 electrosynthesis in a practical environment. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Mesoporous Boron-Doped Carbon with Curved B4C Active Sites for Highly Efficient H2O2 Electrosynthesis in Neutral Media and Air-Supplied Environments Article 10.1002/adma.202415712 1 Advanced Materials, v.37, no.9 Advanced Materials 37 9 N scie scopus 001398051300001 2-s2.0-85215065872 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article HYDROGEN-PEROXIDE OXYGEN REDUCTION ELECTRO-FENTON POROUS CARBON ELECTROCATALYSTS GRAPHENE STRAIN METAL boron doping CO2-derived carbon curvature hydrogen peroxide production oxygen reduction reaction