High-entropy alloys in electrocatalysis: from fundamentals to applications

Chemical Society Reviews, Год журнала: 2023, Номер 52(23), С. 8319 - 8373

Опубликована: Янв. 1, 2023

In this review, we provide a comprehensive summary of recent advances in the synthesis strategies, design principles, and characterization technologies high entropy alloys, their applications various electrocatalytic conversion reactions.

Язык: Английский

---

Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis

Chemical Reviews, Год журнала: 2023, Номер 123(22), С. 12507 - 12593

Опубликована: Ноя. 1, 2023

Electrocatalysis underpins the renewable electrochemical conversions for sustainability, which further replies on metallic nanocrystals as vital electrocatalysts. Intermetallic have been known to show distinct properties compared their disordered counterparts, and long explored functional improvements. Tremendous progresses made in past few years, with notable trend of more precise engineering down an atomic level investigation transferring into practical membrane electrode assembly (MEA), motivates this timely review. After addressing basic thermodynamic kinetic fundamentals, we discuss classic latest synthetic strategies that enable not only formation intermetallic phase but also rational control other catalysis-determinant structural parameters, such size morphology. We demonstrate emerging nanomaterials potentially advancement energy electrocatalysis. Then, state-of-the-art characterizations representative electrocatalysts emphasis oxygen reduction reaction evaluated a MEA setup. summarize review by laying out existing challenges offering perspective future research directions toward practicing conversions.

Язык: Английский

---

Highly Reversible Zn Anodes Achieved by Enhancing Ion-Transport Kinetics and Modulating Zn (002) Deposition

ACS Nano, Год журнала: 2023, Номер 17(21), С. 21893 - 21904

Опубликована: Окт. 28, 2023

Uncontrolled dendrite growth and water-related side reactions in mild electrolytes are the main causes of poor cycling stability zinc anodes, resulting deterioration aqueous zinc-based batteries. Herein, a multifunctional fluorapatite (Ca5(PO4)3F) aerogel (FAG) interface layer is proposed to realize highly stable anodes via integrated regulation Zn2+ migration kinetics Zn (002) orientation deposition. Owing well-defined nanochannels rich adsorption sites from ion exchange between Ca2+ Zn2+, FAG could significantly accelerate effectively homogenize flux nucleation sites, thus promoting rapid uniform at electrode/electrolyte interface. Additionally, during process, F atoms promote situ generation ZnF2, which facilitates manipulation preferred deposition, efficiently suppressing by combining with above synergistic effects. Consequently, FAG-modified anode displays cycle life over 4000 h 1 mA cm-2 exhibits reversible plating/stripping behavior. Meanwhile, Zn||MnO2 full cells exhibit improved 2000 cycles compared that bare Zn, highlighting virtues protective for anodes. Our work brings insight stabilize power commercial applications

Язык: Английский

---

Nanoscale high-entropy alloy for electrocatalysis

Matter, Год журнала: 2023, Номер 6(6), С. 1717 - 1751

Опубликована: Июнь 1, 2023

Язык: Английский

---

Frontiers in high entropy alloys and high entropy functional materials

Rare Metals, Год журнала: 2024, Номер 43(10), С. 4639 - 4776

Опубликована: Авг. 28, 2024

Язык: Английский

---

Controllable synthesis of high-entropy alloys

Chemical Society Reviews, Год журнала: 2024, Номер 53(12), С. 6021 - 6041

Опубликована: Янв. 1, 2024

This review provides a comprehensive overview of the recent advancements in controllable synthesis high-entropy alloys, ranging from approach and significance composition, morphology, structure, surface/interface engineering.

Язык: Английский

---

High-entropy alloy electrocatalysts go to (sub-)nanoscale

Science Advances, Год журнала: 2024, Номер 10(23)

Опубликована: Июнь 5, 2024

Alloying has proven power to upgrade metallic electrocatalysts, while the traditional alloys encounter limitation for optimizing electronic structures of surface sites in a continuous manner. High-entropy (HEAs) overcome this by manageably tuning adsorption/desorption energies reaction intermediates. Recently, marriage nanotechnology and HEAs made considerable progresses renewable energy technologies, showing two important trends size diminishment multidimensionality. This review is dedicated summarizing recent advances that are rationally designed electrocatalysis. We first explain advantages as electrocatalysts from three aspects: high entropy, nanometer, multidimension. Then, several structural regulation methods proposed promote electrocatalysis HEAs, involving thermodynamically nonequilibrium synthesis, regulating (sub-)nanosize anisotropic morphologies, well engineering atomic ordering. The general relationship between electrocatalytic properties further discussed. Finally, we outline remaining challenges field, aiming inspire more sophisticated HEA-based nanocatalysts.

Язык: Английский

---

Defect Engineering of RuO₂ Aerogel for Efficient Acidic Water Oxidation

ACS Materials Letters, Год журнала: 2024, Номер 6(3), С. 748 - 755

Опубликована: Янв. 29, 2024

The development of renewable energy conversion devices heavily relies on the design high-performance electrocatalysts for water electrolysis systems. In this study, a Se-doped RuO2 aerogel (Se-RuO2 aerogel) with abundant defects is prepared as an excellent oxygen evolution reaction (OER) electrocatalyst in acidic media. Se-RuO2 exhibits remarkably low overpotential 166 mV at current density 10 mA cm–2 and long-term stability up to 48 h. Concurrently, detailed situ experiments demonstrate that can maintain during OER process, their path follows more stable adsorption mechanism. Therefore, it operate 100 h when assembled anode catalyst polymer electrolyte membrane (PEM) electrolyzer. This work provides new vision based defect engineering.

Язык: Английский

---

Freeze-casting in synthetic porous materials: Principles, different dimensional building units and recent applications

Sustainable materials and technologies, Год журнала: 2024, Номер 39, С. e00830 - e00830

Опубликована: Янв. 17, 2024

Язык: Английский

---

Advancements in electrochemical CO2 reduction reaction: A review on CO2 mass transport enhancement strategies

Chemical Engineering Journal, Год журнала: 2024, Номер 486, С. 150169 - 150169

Опубликована: Март 4, 2024

Язык: Английский

---