Materials Today Sustainability, Journal Year: 2023, Volume and Issue: 23, P. 100434 - 100434
Published: June 13, 2023
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 6, 2024
Abstract Rational design and fabrication of efficient catalysts for overall water splitting in an integrated electrolyzer are essential energy storage conversion. Herein, ultra‐small substitutional Zn‐doped Ru/RuO 2 heterostructure (5.6 nm) is synthesized through a facile pyrolyzing strategy as bi‐functional electrocatalyst both acidic alkaline media. Experiments demonstrate that introducing appropriate alien atoms into RuO with amorphous state can effectively optimize the electron structure expose abundant defects, thus increasing number active sites improving intrinsic activity oxygen evolution reaction (OER). In addition, high hydrogen adsorption capability metallic Ru makes Ru‐RuO heterointerface suitable splitting. Notably, Ru/ZnRuO displays low overpotentials at 10 mA cm −2 only 184 mV OER 0.5 m H SO 4 35 HER 1.0 KOH. Besides, as‐synthesized cell voltages 1.540 1.567 V (at ) remarkable durability more than 220 100 h, respectively, This work provides designing pH‐universal electrocatalysts toward
Language: Английский
Citations
7
Nano Research, Journal Year: 2022, Volume and Issue: 16(5), P. 7724 - 7732
Published: Dec. 27, 2022
Language: Английский
Citations
25
ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(16), P. 20081 - 20088
Published: March 29, 2023
The realization of commercialization proton electrolyte membrane water splitting technology significantly depends on the anodic electrocatalyst working at a high potential and strong acidic conditions requiring superior oxygen evolution reaction activity stability. In this work, we devise construction ultrasmall Pd@Ir core-shell nanoparticles (5 nm) with atomic layer Ir (3 layers) carbon nanotubes (Pd@Ir/CNT) as an exceptional bifunctional in splitting. Due to structure, strain generated heterointerfaces leads upshifted d band center atoms contributing 62-fold better mass 1.63 V vs RHE than commercial IrO2; besides, electronic hybridization suppresses electrochemical dissolution Ir; result, robust stability is also achieved. hydrogen catalysis, Pd@Ir/CNT exhibits 3.7 times higher Pt/C. Furthermore, only 1.7 required reach current density 100 mA cm-2, 251 mV lower that Pt/C-IrO2, indicating its superiority
Language: Английский
Citations
15
ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(50), P. 17564 - 17594
Published: Dec. 6, 2023
Proton exchange membrane water electrolysis (PEMWE) is considered the most compatible technology with intermittent renewable energies for clean hydrogen generation. More than that, compared alkaline electrolyzers, totality of practicality enhances due to obvious advantages such as efficiency, high purity, low operation pressure, etc. However, sluggish four-electron-transfer reaction oxygen evolution (OER), which involves complex intermediates and multiple steps, significantly impacts overall efficiency PEMWE. Therefore, developing highly efficient, stable, low-cost high-tech electrocatalysts acidic OER crucial. In comparison expensive commercial iridium or oxide electrocatalyst, Ru oxides are much cheaper alternatives that demonstrate superior catalytic performance OER. this perspective, generally accepted mechanisms including AEM LOM introduced corresponding pathways. Then, Ru-based explicated on performances OER, include metal metal-based alloys, RuO2-based catalysts, solid solutions, perovskites, pyrochlores, single atoms, other catalysts. Finally, challenges future research perspectives catalysts discussed.
Language: Английский
Citations
15
Materials Today Sustainability, Journal Year: 2023, Volume and Issue: 23, P. 100434 - 100434
Published: June 13, 2023
Language: Английский
Citations
14