Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124709 - 124709
Published: Oct. 1, 2024
Language: Английский
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 5, 2025
Abstract As global demand for clean and sustainable energy continues to rise, fuel cell technology has seen rapid advancement. However, the presence of trace impurities like carbon monoxide (CO) hydrogen sulfide (H₂S) in can significantly deactivate anode by blocking its active sites, leading reduced performance. Developing electrocatalysts that are resistant CO H₂S poisoning therefore become a critical priority. This paper provides comprehensive analysis mechanisms reviews key strategies developed over past few decades enhance impurity tolerance electrocatalysts. It begins examining differences oxidation reaction (HOR) acidic alkaline environments, focusing on roles binding (HBE) hydroxide (OHBE). Next, it outlines three main approaches mitigate poisoning: (I) bifunctional mechanisms, (II) direct (III) constructing protective layers. The review then shifts countering poisoning, emphasizing both electrocatalyst design structural improvements cells. Finally, highlights recent advances anti‐poisoning electrocatalysts, discusses their applications limitations, identifies challenges future opportunities further research this field.
Language: Английский
Citations
2
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 27, 2024
Abstract In‐depth comprehension and improvement of the sluggish hydrogen evolution kinetics in alkaline media is highly important to enhance activity durability anion exchange membrane water electrolysis (AEMWE) for green production. Herein, a atom‐terminated core–shell PdH@Ru nanobamboos (NBs) developed by synergetic strategy epitaxial growth situ DMF hydrogenation. The synthesized NBs demonstrate exceptional reaction (HER) media, requiring only 14 mV overpotential at 10 mA cm −2 , surpassing those commercial Pt/C (35 mV) H‐free Pd@Ru (37 mV). Furthermore, an AEMWE device using as cathode also achieves current density 1000 − 2 ≈1.80 V 1.0 m KOH 60 °C, with continuous operation 50 h. operando spectroscopic analysis functional theory calculations suggest that insertion into induces tensile strain on Ru surface layer, altering Pd/Ru electronic structure weakening H adsorption, thereby enhancing HER efficiency. bamboo‐like hollow features numerous active sites, which contribute optimization electron/mass diffusion electrolyte. This work provides potential high‐efficiency cathodic electrocatalyst industrial
Language: Английский
Citations
6
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 16, 2024
Abstract Anion exchange membrane fuel cells (AEMFCs) are advantageous for reducing or even eliminating the dependency on platinum resources, as alkaline environment allows use of non‐precious metal catalysts oxygen reduction reaction at cathode. However, intrinsic activity hydrogen oxidation (HOR) in environments is 2 to 4 orders magnitude lower than acidic environments, which becomes major challenge AEMFCs. This review examines current developments HOR and systematically summarizes activation mechanism with a focus potential influencing factors enhancement strategies. Furthermore, it offers insights into prospects developing more efficient catalysts.
Language: Английский
Citations
4
Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 3, 2025
Language: Английский
Citations
0
Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: 147(6), P. 5398 - 5407
Published: Jan. 31, 2025
Anion-exchange membrane fuel cell (AEMFC) is a cost-effective hydrogen-to-electricity conversion technology under zero-emission scenario. However, the sluggish kinetics of anodic hydrogen oxidation reaction (HOR) impedes commercial implementation AEMFCs. Here, we develop Pd single-atom-embedded Ni3N catalyst (Pd1/Ni3N) with unconventional Pd1Ni2 trimer sites to drive efficient and durable HOR in alkaline media. Integrating theoretical experimental analyses, demonstrate that dual achieve "*H on Pd1Ni2-HV + *OH Pd1Ni2-HN" adsorption mode, effectively weakening overstrong *H adsorptions pristine Ni3N. Owing unique coordination mode atomically dispersed catalytic sites, resulting Pd1/Ni3N delivers high intrinsic mass activity together excellent antioxidation capability CO tolerance. Specifically, reaches 7.54 A mgPd-1 at overpotential 50 mV. The AEMFC employing as anode displays power density 31.7 W an ultralow precious metal loading only 0.023 mgPd cm-2. This study provides guidance for design high-performance atomic level.
Language: Английский
Citations
0
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 10, 2025
Abstract Developing highly active and CO‐resistant Ru‐based catalysts for the alkaline hydrogen oxidation reaction (HOR) can advance large‐scale application of fuel cells but remains a huge challenge. Herein, pure phase W 2 C supported Ru cluster catalyst (Ru/W C) is successfully synthesized through one‐step carburization method. It found that charge transfer from to strongly anchored clusters forms electron‐rich δ− sites electron‐deficient δ+ sites, which significantly weakens adsorption strength * H CO, strengthens binding OH improves water connectivity in electric double layer. The Ru/W shows superior mass activity (2163 mA mg PGM −1 ) HOR, 12.52 20.62 times higher than Pt/C Ru/C, respectively. Owing weak fast removal rate exhibits outstanding CO tolerance, with 88% initial being retained durability test, whereas Ru/C suffer severe deactivation. These findings may guide design advanced HOR based on tungsten carbide.
Language: Английский
Citations
0
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: March 18, 2025
Abstract The hydrogen oxidation reaction (HOR) in alkaline media is pivotal for the advancement of anion exchange membrane fuel cells (AEMFCs), and development single‐atom catalysts offers a promising solution creating cost‐effective, highly efficient HOR catalysts. Although transition from nanoparticle to enhances catalytic activity, stability these sites remains significant challenge. In this study, active stable catalyst successfully designed by incorporating Ru atoms into ZrO 2‐x /C nanoparticles, forming single Ru‐SA‐ZrO /C. exhibits an outstanding mass activity 6789.4 mA mg −1 at 50 mV, surpassing Ru/C 67 fold commercial Pt/C 42.5 fold. Density functional theory (DFT) simulations reveal that integration optimizes both bonding energy (HBE) hydroxyl binding (OHBE), reducing toxicity sites. This research opens new pathway precise design metal hybrids, offering direction developing electrocatalysts applications.
Language: Английский
Citations
0
Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 3, 2025
Electrochemical conversion has been regarded as an ideal technology for achieving clean and sustainable energy, showing significant promise in addressing the increasingly serious energy crisis environmental pollution. Ru-containing electrocatalysts (RUCE) outperform other precious metals due to elevated intrinsic activity superior cost-effectiveness, developing into a promising candidate electrochemical reactions. A challenge field of catalyst discovery lies its heavy reliance on empirical methods, rather than approaches that are rooted rational design principles. This review first concentrates catalytically active sites critical factors governing catalytic performance durability. Then, comprehensive summary multifunctional modification strategies ranging from nanoscale atomic scale is explored control structure improve performance. By unveiling roles each component modified RUCE at level, their identified discussed establish structure-performance relationship catalysts. Finally, challenges perspectives Ru-based materials hydrogen, oxygen, nitrogen reactions presented inspire further efforts toward understanding meet ever-growing demand future.
Language: Английский
Citations
0
Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: April 1, 2025
Language: Английский
Citations
0