Atomic Design of High-Entropy Alloys for Electrocatalysis DOI
Junlin Liu, Yile Zhang, Yiran Ding

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(7), P. 2642 - 2659

Published: May 30, 2024

High-entropy alloys (HEAs) contain five or more main elements, and each element ranges in content from 5% to 35%. Due the abundant selectivity of excellent structural stability, adjustable active centers, HEAs have been widely used electrocatalysis. Designing HEA catalysts at atomic scale can deeply describe their complexity accurately reflect relationship between structure catalytic performance. In this Review, design HEA-based electrocatalysts is introduced it evaluated terms activity, selectivity, efficiency. Ingenuity level customize composition geometric HEAs, thereby enhancing intrinsic activity site, creating new sites, improving operational stability. The Review provides insights into electrocatalytic properties guidance for synthesis advanced viewpoint fabrication.

Language: Английский

Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis DOI

Fangxu Lin,

Menggang Li, Lingyou Zeng

et al.

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(22), P. 12507 - 12593

Published: Nov. 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.

Language: Английский

Citations

92
Optimization strategies of high-entropy alloys for electrocatalytic applications DOI Creative Commons
Liyuan Xiao, Zhenlü Wang, Jingqi Guan

et al.

Chemical Science, Journal Year: 2023, Volume and Issue: 14(45), P. 12850 - 12868

Published: Jan. 1, 2023

This review summarizes the synthesis methods, characterization research progress and regulation strategies of HAEs in field electrocatalytic HER, HOR, OER, ORR, CO 2 RR, NRR AOR, providing deep understanding for future applications.

Language: Английский

Citations

74
Noble metal-free FeCoNiMnV high entropy alloy anchored on N-doped carbon nanotubes with prominent activity and durability for oxygen reduction and zinc–air batteries DOI
Donghui Wu, Mahmood Ul Haq, Lu Zhang

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 662, P. 149 - 159

Published: Feb. 7, 2024

Language: Английский

Citations

71
Phase Engineering of High‐Entropy Alloy for Enhanced Electrocatalytic Nitrate Reduction to Ammonia DOI
Rong Zhang, Yaqin Zhang, Bo Xiao

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(35)

Published: May 4, 2024

Abstract Directly electrochemical conversion of nitrate (NO 3 − ) is an efficient and environmentally friendly technology for ammonia (NH production but challenged by highly selective electrocatalysts. High‐entropy alloys (HEAs) with unique properties are attractive materials in catalysis, particularly multi‐step reactions. Herein, we first reported the application HEA (FeCoNiAlTi) electrocatalytic NO reduction to NH (NRA). The bulk active NRA limited unsatisfied yield 0.36 mg h −1 cm −2 Faradaic efficiency (FE) 82.66 %. Through effective phase engineering strategy, uniform intermetallic nanoparticles introduced on increase surface area charge transfer efficiency. resulting nanostructured (n‐HEA) delivers enhanced performance terms (0.52 FE (95.23 %). Further experimental theoretical investigations reveal that multi‐active sites (Fe, Co, Ni) dominated electrocatalysis over n‐HEA. Notably, typical Co exhibit lowest energy barrier *NH 2 as rate‐determining step.

Language: Английский

Citations

52
High-entropy L12-Pt(FeCoNiCuZn)3 intermetallics for ultrastable oxygen reduction reaction DOI
Qian Zhang, Tao Shen, Min Young Song

et al.

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 86, P. 158 - 166

Published: Aug. 2, 2023

Language: Английский

Citations

44
Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications DOI Creative Commons
Jitendra N. Tiwari, Krishan Kumar, Moein Safarkhani

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(33)

Published: July 1, 2024

Abstract Modifying the coordination or local environments of single‐, di‐, tri‐, and multi‐metal atom (SMA/DMA/TMA/MMA)‐based materials is one best strategies for increasing catalytic activities, selectivity, long‐term durability these materials. Advanced sheet supported by metal atom‐based have become a critical topic in fields renewable energy conversion systems, storage devices, sensors, biomedicine owing to maximum utilization efficiency, precisely located centers, specific electron configurations, unique reactivity, precise chemical tunability. Several offer excellent support are attractive applications energy, medical research, such as oxygen reduction, production, hydrogen generation, fuel selective detection, enzymatic reactions. The strong metal–metal metal–carbon with metal–heteroatom (i.e., N, S, P, B, O) bonds stabilize optimize electronic structures atoms due interfacial interactions, yielding activities. These provide models understanding fundamental problems multistep This review summarizes substrate structure‐activity relationship different active sites based on experimental theoretical data. Additionally, new synthesis procedures, physicochemical characterizations, biomedical discussed. Finally, remaining challenges developing efficient SMA/DMA/TMA/MMA‐based presented.

Language: Английский

Citations

24
Stabilizing Diluted Active Sites of Ultrasmall High‐Entropy Intermetallics for Efficient Formic Acid Electrooxidation DOI
Tao Shen,

Dongdong Xiao,

Zhiping Deng

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(20)

Published: March 20, 2024

Abstract The poisoning of undesired intermediates or impurities greatly hinders the catalytic performances noble metal‐based catalysts. Herein, high‐entropy intermetallics i ‐(PtPdIrRu) 2 FeCu (HEI) are constructed to inhibit strongly adsorbed carbon monoxide (CO*) during formic acid oxidation reaction. As probed by multiple‐scaled structural characterizations, HEI nanoparticles featured with partially negative Pt states, diluted Pt/Pd/Ir/Ru atomic sites and ultrasmall average size less than nm. Benefiting from optimized structures, deliver more 10 times promotion in intrinsic activity that pure Pt, well‐enhanced mass activity/durability ternary ‐Pt counterpart. In situ infrared spectroscopy manifests both bridge top CO* favored on but limited HEI. Further theoretical elaboration indicates displayed a much weaker binding sluggish diffusion among different sites, contrast bound was easy diffuse larger ensembles. This work verifies HEIs promising catalysts via integrating merits alloys.

Language: Английский

Citations

23
FeCoCuMnRuB Nanobox with Dual Driving of High-Entropy and Electron-Trap Effects as the Efficient Electrocatalyst for Water Oxidation DOI
Li Liu, Tinghui Liu,

Can Xu

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(9), P. 2831 - 2838

Published: Feb. 22, 2024

High-entropy borides hold potential as electrocatalysts for water oxidation. However, the synthesis of tailored nanostructures remains a challenge due to thermodynamic immiscibility polymetallic components. Herein, FeCoCuMnRuB nanobox decorated with nanosheet array was synthesized first time by "coordination-etch-reduction" method. The has various structural characteristics express catalytic performance; meanwhile, it combines high-entropy effect multiple components electron trap induced electron-deficient B, synergistically regulating its electronic structure. As result, exhibits enhanced OER activity low overpotential (η10 = 233 mV), high TOF value (0.0539 s–1), small Tafel slope (61 mV/dec), and satisfactory stability 200 h, outperforming alloy low-entropy borides. This work develops entropy B-driven strategy motivating performance oxidation, which broadens diversity category materials.

Language: Английский

Citations

22
High-entropy alloy electrocatalysts go to (sub-)nanoscale DOI Creative Commons
Menggang Li,

Fangxu Lin,

Shipeng Zhang

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(23)

Published: June 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.

Language: Английский

Citations

21
Surface Strain Effect on Electrocatalytic Hydrogen Evolution Reaction of Pt-Based Intermetallics DOI
Ziying Zhong, Yuanhua Tu, Longhai Zhang

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(5), P. 2917 - 2923

Published: Feb. 12, 2024

Elucidating the relationship between electrocatalytic activity and surface strain is pivotal for designing highly efficient electrocatalysts acidic hydrogen evolution reaction (HER). However, a general correlation currently absent due to lack of ideal catalytic materials platforms with well-defined structures components. Herein, we select L10 L12 Pt-based intermetallic compounds as model construct series core–shell catalysts strained Pt skins (IMC@Pt) establish HER performance. Density functional theory calculations were performed determine degree, d-band center, key descriptor ΔGH* HER. By combining theoretical experimental data, propose volcano-type trend IMC@Pt an apex at 4% compressive strain. In addition, demonstrate class active durable Among them, Pt3V@Pt catalyst exhibits highest intrinsic specific 4.24 mA cmPt–2 overpotential 20 mV, which 4 times higher than that Pt. This work provides solid understanding essential nature PtM alloy can guide design high-performance water electrolyzers.

Language: Английский

Citations

20