Kim, Jong Min Kim, Joo-Hyung Kim, Jun Lim, Youngjoon Kim, Yongmin Alam, Afroz Lee, Jaeseung Ju, Hyunchul Ham, Hyung Chul Kim, Jin Young 2024-01-19T16:01:52Z 2024-01-19T16:01:52Z 2021-10-21 2020-12 0935-9648 https://pubs.kist.re.kr/handle/201004/117734 A new direction for developing electrocatalysts for hydrogen fuel cell systems has emerged, based on the fabrication of 3D architectures. These new architectures include extended Pt surface building blocks, the strategic use of void spaces, and deliberate network connectivity along with tortuosity, as design components. Various strategies for synthesis now enable the functional and structural engineering of these electrocatalysts with appropriate electronic, ionic, and electrochemical features. The new architectures provide efficient mass transport and large electrochemically active areas. To date, although there are few examples of fully functioning hydrogen fuel cell devices, these 3D electrocatalysts have the potential to achieve optimal cell performance and durability, exceeding conventional Pt powder (i.e., Pt/C) electrocatalysts. This progress report highlights the various 3D architectures proposed for Pt electrocatalysts, advances made in the fabrication of these structures, and the remaining technical challenges. Attempts to develop design rules for 3D architectures and modeling, provide insights into their achievable and potential performance. Perspectives on future developments of new multiscale designs are also discussed along with future study directions. English WILEY-V C H VERLAG GMBH Synergetic Structural Transformation of Pt Electrocatalyst into Advanced 3D Architectures for Hydrogen Fuel Cells Article 10.1002/adma.202002210 1 ADVANCED MATERIALS, v.32, no.51 ADVANCED MATERIALS 32 51 N scie scopus 000573222300001 2-s2.0-85091686481 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article OXYGEN REDUCTION REACTION DIRECT NUMERICAL-SIMULATION HIGHLY-ACTIVE ELECTROCATALYSTS THIN-FILM ELECTROCATALYSTS DENSITY-FUNCTIONAL THEORY PT-NI AEROGELS GALVANIC REPLACEMENT HIGH-PERFORMANCE NSTF ELECTRODES PARTICLE-SIZE 3D architectures fuel cells oxygen reduction reaction Pt electrocatalysts