Kim, Seongbeen Shin, Seung-Jae Kim, Hoyoung Kim, Bupmo Noh, Namgyu Lee, Kug-Seung Park, Jinkyu Jun, Hyunwoo Kim, Jiwon Byeon, Jaeho Lee, Seonggyu Huang, Huawei Noh, Sunghyun Jeong, Han Beom Jang, Jong Hyun Yuk, Jong Min Kim, Wooyul Kim, Hyungjun Lee, Jinwoo 2025-01-07T06:00:29Z 2025-01-07T06:00:29Z 2024-12-30 2025-01 1754-5692 https://pubs.kist.re.kr/handle/201004/151499 Atomically dispersed catalysts are ideal for alkaline hydrogen electrocatalysis with low noble metal loadings. However, previous designs have exhibited insufficient *OH binding and low cell performance, which limit their application in anion-exchange membrane water electrolyzers. In this study, we employed a self-assembly-assisted dynamic placement to prepare atomically dispersed electrocatalysts on heterostructured MoxC-C. The multifunctional MoxC support bolsters the dynamic placement while optimizing the interfacial water structure. The self-assembly-assisted dynamic placement facilitates the selective loading of atomically dispersed noble metals on MoxC at 1373 K by leveraging molecular interactions and metal-support interactions. The dynamic placement enables the construction of interfacial active systems between noble metals and MoxC, enhancing the reaction kinetics, stability, and CO tolerance of alkaline hydrogen electrocatalysis. Specifically, selective loading enables the effective utilization of *OH binding sites on MoxC, promoting water dissociation by increasing the free-water population in the interfacial water structure. In an anion-exchange membrane water electrolyzer, the designed catalysts exhibited higher cell stability (500 h) than commercial PtRu/C. They also exhibited enhanced performance even with a low noble metal loading (0.060 mgPt cm-2), achieving the US Department of Energy's 2026 target for proton-exchange membrane water electrolyzers. English Royal Society of Chemistry Self-assembly-assisted dynamic placement of noble metals selectively on multifunctional carbide supports for alkaline hydrogen electrocatalysis Article 10.1039/d4ee04660a 1 Energy & Environmental Science, v.18, no.2, pp.659 - 673 Energy & Environmental Science 18 2 659 673 N scie scopus 001378757500001 2-s2.0-85212687078 Chemistry, Multidisciplinary Energy & Fuels Engineering, Chemical Environmental Sciences Chemistry Energy & Fuels Engineering Environmental Sciences & Ecology Article OXIDATION CATALYST ENERGY MONOLAYERS