Unconventional Alloys Confined in Nanoparticles: Building Blocks for New Matter

Feng, Jicheng; Chen, Dong; Pikhitsa, Peter V.; Jung, Yoon-ho; Yang, Jun; Choi, Mansoo

doi:10.1016/j.matt.2020.07.027

Cited by 92 publications

(82 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Alloying PGMs with transition metal elements is another route to increasing the alcohol oxidation capability. Feng et al ( 105 ) used a sparking mashup technique to fabricate up to 55 alloy nanoparticles ranging from binary alloys to HEAs. The as-synthesized Pt and Pd alloys displayed enhanced performances for the electrochemical oxidation of methanol, ethanol, and formic acid.…”

Section: Heas For Catalysismentioning

confidence: 99%

High-entropy materials for catalysis: A new frontier

2021

View full text Add to dashboard Cite

Entropy plays a pivotal role in catalysis, and extensive research efforts have been directed to understanding the enthalpy-entropy relationship that defines the reaction pathways of molecular species. On the other side, surface of the catalysts, entropic effects have been rarely investigated because of the difficulty in deciphering the increased complexities in multicomponent systems. Recent advances in high-entropy materials (HEMs) have triggered broad interests in exploring entropy-stabilized systems for catalysis, where the enhanced configurational entropy affords a virtually unlimited scope for tailoring the structures and properties of HEMs. In this review, we summarize recent progress in the discovery and design of HEMs for catalysis. The correlation between compositional and structural engineering and optimization of the catalytic behaviors is highlighted for high-entropy alloys, oxides, and beyond. Tuning composition and configuration of HEMs introduces untapped opportunities for accessing better catalysts and resolving issues that are considered challenging in conventional, simple systems.

show abstract

Section: Heas For Catalysismentioning

confidence: 99%

High-entropy materials for catalysis: A new frontier

2021

View full text Add to dashboard Cite

show abstract

“…It should be noted that besides entropy considerations, other physicochemical properties will also affect the single-phase mixing, for example, atom size mismatch, valence electron concentration, and the size effect. 52 Therefore, the entropy-driven strategy acts as an important methodology and descriptor for alloy mixing, yet the precise evaluation of each contributing parameter will require more experiments and perhaps a data-driven discovery process. 15,17…”

Section: Discussionmentioning

confidence: 99%

Extreme mixing in nanoscale transition metal alloys

Yao

Huang²,

Hughes³

et al. 2021

Matter

151

110

View full text Add to dashboard Cite

Conventionally, alloys are mostly synthesized in the region of easy mixing, i.e., with light immiscibility and oxidation potentials. Yet such a limited elemental combination largely hinders possible tunability and material discovery. By using entropic design (high temperature and high entropy) that favors uniform mixing, we extended nanoscale alloying to previous unmixable regions by including strongly immiscible and easily oxidized combinations, which we called an extreme mixing. The new alloy space could bring forth exotic nanomaterials for broad applications.

show abstract

“…With the development of nanotechnology, HEAs have also made progress in the electrocatalysis field. [21][22][23][24][25][26][27] It can be effectively used for hydrogen evolution reaction (HER), [28][29][30][31][32][33][34][35][36][37] oxygen evolution reaction (OER), [18,29,30,[38][39][40][41][42] oxygen reduction reaction (ORR), [32,41,[43][44][45][46][47] alcohol oxidation reaction (MOR/EOR), [34,43,[48][49][50][51][52][53][54] carbon dioxide reduction reaction (CO 2 RR), [55,56] and nitrogen reduction reaction (NRR). [57] In catalysis, the excellent performance of the material is not just a simple superposition of the performance of each metal ion, but comes from the synergy between the metal ions.…”

Section: Multi-sites Electrocatalysis In High-entropy Alloysmentioning

confidence: 99%

Multi‐Sites Electrocatalysis in High‐Entropy Alloys

Lai

et al. 2021

Adv Funct Materials

221

135

View full text Add to dashboard Cite

High‐entropy alloys (HEAs) have attracted widespread attention in electrocatalysis due to their unique advantages (adjustable composition, complex surface, high tolerance, etc.). They allow for the formation of new and tailorable active sites in multiple elements adjacent to each other, and the interaction can be tailored by rational selection of element configuration and composition. However, it needs to be further explored in catalyst design, the interaction of elements, and the determination of active sites. This review article focuses on the important progress for multi‐sites electrocatalysis in HEAs. The classification is done on the basis of catalytic reaction, including hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, alcohol oxidation reaction, carbon dioxide reduction reaction, and nitrogen reduction reaction. Based on experiments and theories, a more in‐depth exploration of the high catalytic activity of HEAs will be conducted, including the selection of elements (the special role of each element in catalysis) and the multi‐sites effect. This review can provide the basis for the element selection and design of HEAs in some reactions, to adjust the compositions of HEAs to improve their intrinsic activity. Furthermore, the remaining challenges and future directions for promising research fields are also provided.

show abstract

Unconventional Alloys Confined in Nanoparticles: Building Blocks for New Matter

Cited by 92 publications

References 53 publications

High-entropy materials for catalysis: A new frontier

High-entropy materials for catalysis: A new frontier

Extreme mixing in nanoscale transition metal alloys

Multi‐Sites Electrocatalysis in High‐Entropy Alloys

Contact Info

Product

Resources

About