Pt Nanoparticles Anchored on N-Doped Carbon Containing Single Co Atoms as Catalyst for the Oxygen Reduction Reaction

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 7, 2025

Язык: Английский

---

High Energy Efficiency on Zn–Air/Iodide Hybrid Batteries with Iron Phthalocyanine Coupled Co Single Atoms Dual Active Sites

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Июнь 1, 2025

Abstract Rechargeable zinc–air batteries (ZABs) are hindered by substantial voltage hysteresis and limited cycling stability. To address these challenges, a dual‐innovation strategy is developed through synergistic electrolyte engineering catalyst design. First, implemented the incorporation of KI into electrolyte, transforming conventional ZABs zinc–air/iodide hybrid (ZAIHBs). This modification replaces oxygen evolution reaction (OER) with iodine oxidation (IOR), which operates at significantly reduced overpotential. Second, FePc@CoSAs/NC constructed anchoring iron phthalocyanine (FePc) on Co single‐atom/N‐doped carbon substrates. exhibiting half‐wave potential 0.89 V for ORR achieving 1.26 10 mA cm −2 IOR record‐low ORR/IOR gap 0.37 V. The optimized ZAIHBs demonstrate exceptional energy efficiency 75% stability (73.5% retention over 350 h), surpassing ZABs. Density functional theory calculations reveal that Co–Fe dual‐site coordination optimizes adsorption energetics critical intermediates (OH* in I* IOR), elucidating enhanced kinetics. work establishes co‐design paradigm high‐performance systems integrated engineering.

Язык: Английский

---

Engineering the Local Atomic Environments of Te‐Modulated Fe Single‐Atom Catalysts for High‐Efficiency O₂ Reduction

Small, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 20, 2024

Atomically dispersed metal-nitrogen-carbon materials (AD-MNCs) are considered the most promising non-precious catalysts for oxygen reduction reaction (ORR), but it remains a major challenge simultaneously achieving high intrinsic activity, fast mass transport, and effective utilization of active sites within single catalyst. Here, an AD-MNCs consisting defect-rich Fe-N

Язык: Английский

---

Polymerized Phthalocyanine Manganese/Graphene Composites for Single-Atom Oxygen Reduction Catalysts

ACS Applied Nano Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 23, 2024

Язык: Английский

---