biostudies-literatureUnknown2(10)Guo YThe lack of highly efficient, inexpensive catalysts severely hinders the large-scale application of electrochemical energy conversion technologies (e.g., electrochemical hydrogen evolution reaction (HER) for hydrogen production, metal-air batteries (Cathode: oxygen reduction reaction (ORR))). As a new class of nanomaterials with a high ratio of surface atoms and tunable composition and electronic structure, metal nanocluster (NCs) are promising candidates as catalysts. Herein, a novel catalyst using S,N-doped carbon matrix (NSCSs) is synthesized to efficiently stabilize high density and ultra-uniform ruthenium (Ru) nanoclusters (Ru@NSCSs) by small-molecule self-assembly pyrolysis approach. The obtained Ru@NSCSs catalyst exhibits outstanding HER activity in all pH conditions (especially with a low overpotential of 5 mV at a current density of 10 mA cm^-2 in 1 m KOH) and excellent ORR performance (half-wave potential (<i>E</i> _1/2) of 0.854 V in 0.1 m KOH). Based on the experimental investigations and theoretical calculations, it is discovered that the S-atom can modulate the electronic structure and optimization of redox states on the surficial sites of Ru NCs during the ORR process. This work provides a feasible strategy for understanding and regulating the metal-support interface of ultra-uniform nanoclusters catalysts.Small science2200035https://www.ebi.ac.uk/biostudies/studies/S-EPMC11935901biostudies-literatureCoordination Engineering of Ultra-Uniform Ruthenium Nanoclusters as Efficient Multifunctional Catalysts for Zinc-Air Batteries.PMC11935901Yin HHuang CGuo YZhang JHe GYang BWu DZhang SLi MWang KfalseCoordination Engineering of Ultra-Uniform Ruthenium Nanoclusters as Efficient Multifunctional Catalysts for Zinc-Air Batteries.The lack of highly efficient, inexpensive catalysts severely hinders the large-scale application of electrochemical energy conversion technologies (e.g., electrochemical hydrogen evolution reaction (HER) for hydrogen production, metal-air batteries (Cathode: oxygen reduction reaction (ORR))). As a new class of nanomaterials with a high ratio of surface atoms and tunable composition and electronic structure, metal nanocluster (NCs) are promising candidates as catalysts. Herein, a novel catalyst using S,N-doped carbon matrix (NSCSs) is synthesized to efficiently stabilize high density and ultra-uniform ruthenium (Ru) nanoclusters (Ru@NSCSs) by small-molecule self-assembly pyrolysis approach. The obtained Ru@NSCSs catalyst exhibits outstanding HER activity in all pH conditions (especially with a low overpotential of 5 mV at a current density of 10 mA cm^-2 in 1 m KOH) and excellent ORR performance (half-wave potential (<i>E</i> _1/2) of 0.854 V in 0.1 m KOH). Based on the experimental investigations and theoretical calculations, it is discovered that the S-atom can modulate the electronic structure and optimization of redox states on the surficial sites of Ru NCs during the ORR process. This work provides a feasible strategy for understanding and regulating the metal-support interface of ultra-uniform nanoclusters catalysts.2022-01-01T00:00:00Z2022 Oct2025-07-05T03:04:31.829Z2025-07-05T03:04:31.829ZS-EPMC119359014021270210.1002/smsc.202200035