Destabilization of Single‐Atom Catalysts: Characterization, Mechanisms, and Regeneration Strategies

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 19, 2025

Abstract Numerous in situ characterization studies have focused on revealing the catalytic mechanisms of single‐atom catalysts (SACs), providing a theoretical basis for their rational design. Although research is relatively limited, stability SACs under long‐term operating conditions equally important and prerequisite real‐world energy applications, such as fuel cells water electrolyzers. Recently, there has been rise destabilization regeneration SACs; however, timely comprehensive summaries that provide catalysis community with valuable insights directions are still lacking. This review summarizes recent advances strategies SACs, specifically highlighting various state‐of‐the‐art techniques employed studies. The factors induce identified by discussing failure active sites, coordination environments, supports, reaction scenarios. Next, primary introduced, including redispersion, surface poison desorption, exposure subsurface sites. Additionally, advantages limitations both ex discussed. Finally, future proposed, aimed at constructing structure–stability relationships guiding design more stable SACs.

Язык: Английский

---

Recent advances on support materials for enhanced Pt-based catalysts: applications in oxygen reduction reactions for electrochemical energy storage

Journal of Materials Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Abstract As the demand for sustainable energy solutions grows, developing efficient conversion and storage technologies, such as fuel cells metal-air batteries, is vital. Oxygen Reduction Reaction (ORR) a significant limitation in electrochemical systems due to its slower kinetics. Although Pt-based catalysts are commonly used address this challenge, their high cost suboptimal performance remain obstacles further development. This review offers comprehensive overview of advanced support materials aimed at improving efficiency, durability, cost-effectiveness catalysts. By examining range materials, including mesoporous carbon, graphene, carbon nanotubes, metal oxides, clarifies relationship between structural properties these supports influence on ORR performance. Additionally, it discusses fundamental characteristics practical applications cells, explores potential future directions optimizing advance technologies. Future research could focus nano-engineering composite material development unlock full catalysts, significantly enhancing economic viability applications.

Язык: Английский

---

Triggered synergistic effect of Fe single atoms and tiny Co nanoparticles to enhanced oxygen electrocatalysis bifunctionality for zinc-air batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162281 - 162281

Опубликована: Апрель 1, 2025

Язык: Английский

---

Performance Optimization by Antioxidant Strategies for Proton Exchange Membrane Fuel Cells: Recent Progress and Future

EnergyChem, Год журнала: 2024, Номер unknown, С. 100142 - 100142

Опубликована: Дек. 1, 2024

Язык: Английский

---

Functional additives for proton exchange membrane fuel cells

EnergyChem, Год журнала: 2025, Номер unknown, С. 100144 - 100144

Опубликована: Янв. 1, 2025

Язык: Английский

---

Ratiometric fluorescence/colorimetric dual-mode detection of tertiary butylhydroquinone in edible oils based on copper‑cerium oxide nanozyme and nitrogen-doped carbon dots

Food Chemistry, Год журнала: 2025, Номер 477, С. 143517 - 143517

Опубликована: Фев. 21, 2025

Язык: Английский

---

Design and Application of Flower-like Iron Single-Atom Nanozymes for Sensitive Colorimetric Detection of Caffeic Acid

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

Опубликована: Март 13, 2025

Язык: Английский

---

Cascade Hydrogen Peroxide Reduction Reaction Endows Cu‐Fe Dual‐Atom Catalyst with Durable Oxygen Reduction Performance

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Abstract Durable problems caused by the attack from free radicals are considered as Achilles’ heel in practical applications for oxygen reduction reaction (ORR) acidic conditions. Herein, a ligand‐bridging strategy is proposed to design Cu─Fe dual‐atom catalyst (CuFeDAC‐NC) relieve undesirable degradation radicals. Comprehensive investigations and theoretical calculations verify that byproduct of hydrogen peroxide can be effectively eliminated at neighboring Cu sites through cascade catalytic process, formation oxidative suppressed, leading enhanced durability. Meanwhile, synergistic effect between site Fe results superior ORR performance. CuFeDAC‐NC delivers half‐wave potential ( E 1/2 ) 0.811 V 0.1 M HClO 4 electrolyte exhibits excellent durability with small loss 12 mV after 10 000 cycles Fe─NC (34 mV). This work not only provides new perspective get insight into mechanisms but also opens an avenue catalysts

Язык: Английский

---

Tuning the electronic structure of the Mn–N–C catalyst through XO₂ group (X = S, Se, Te) doping for proton-exchange membrane fuel cells

Green Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Single-atom catalysts towards the oxygen reduction reaction (ORR) often suffer from unsatisfactory activity and poor stability.

Язык: Английский

---

Engineering the regulation strategy of active sites to explore the intrinsic mechanism over single‑atom catalysts in electrocatalysis

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 693, С. 137595 - 137595

Опубликована: Апрель 14, 2025

Язык: Английский

---