Structural-Phase Transformations in the Cu3Pt5 Alloy During Atomic Ordering

Potekaev, A. I.; Кулагина, В. В.; Chaplygina, A. A.; Старостенков, М. Д.; Клопотов, А. А.

doi:10.1007/s11182-013-0077-6

Cited by 21 publications

(2 citation statements)

References 9 publications

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“…L1 3 , AB 3 type. This structure can be interpreted as a transformation of the L1 1 structure, in which four face-centered positions that z-coordinate are 1/2 in L1 1 unit cell are occupied by B atoms [23]. In addition to the four structures mentioned above, there is another structure, named Ga 3 Pt 5 , which can be simplified to the fcc structure if Ga atoms are replaced by Pt [11].…”

Section: Classification Of Pt-based Intermetallic Nanocrystalsmentioning

confidence: 99%

Pt-Based Intermetallic Nanocrystals in Cathode Catalysts for Proton Exchange Membrane Fuel Cells: From Precise Synthesis to Oxygen Reduction Reaction Strategy

Gao

Chen

et al. 2021

Catalysts

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Although oxygen reduction reaction (ORR) catalysts have been extensively investigated and developed, there is a lack of clarity on catalysts that can balance high performance and low cost. Pt-based intermetallic nanocrystals are of special interest in the commercialization of proton exchange membrane fuel cells (PEMFCs) due to their excellent ORR activity and stability. This review summarizes the wide range of applications of Pt-based intermetallic nanocrystals in cathode catalysts for PEMFCs and their unique advantages in the field of ORR. Firstly, we introduce the fundamental understanding of Pt-based intermetallic nanocrystals, and highlight the difficulties and countermeasures in their synthesis. Then, the progress of theoretical and experimental studies related to the ORR activity and stability of Pt-based intermetallic nanocrystals in recent years are reviewed, especially the integrated strategies for enhancing the stability of ORR. Finally, the challenges faced by Pt-based intermetallic nanocrystals are summarized and future research directions are proposed. In addition, numerous design ideas of Pt-based intermetallic nanocrystals as ORR catalysts are summarized, aiming to promote further development of commercialization of PEMFC catalysts while fully understanding Pt-based intermetallic nanocrystals.

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Section: Classification Of Pt-based Intermetallic Nanocrystalsmentioning

confidence: 99%

Pt-Based Intermetallic Nanocrystals in Cathode Catalysts for Proton Exchange Membrane Fuel Cells: From Precise Synthesis to Oxygen Reduction Reaction Strategy

Gao

Chen

et al. 2021

Catalysts

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“…In the works [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47] the new concepts were developed to describe the conditions of formation of transient-stability condensed systems and their structure. The materials under study are generally the alloys and compounds that undergo second-order structural phase transitions.…”

Section: Introductionmentioning

confidence: 99%

Deformation behavior of perfect and imperfect nanomaterials made of intermetallic compounds with bcc lattice

Babicheva¹,

Старостенков²,

Zhou³

2014

LoM

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The paper reviews the literature devoted to the stress-strain behavior of nanomaterials made of NiAl and FeAl intermetallics having B2 superstructure with body-centered cubic (bcc) lattice. Such nanomaterials demonstrate elastic deformation up to the point of their failure. In a concave region of a strain dependence of the potential energies P(ε), the materials demonstrate thermodynamic instability and the non-homogeneous elastic deformation which is accompanied by the appearance of domains of two strain levels. Stretching behavior of NiAl and FeAl nanomaterials depends on lattice defects and sample geometry. An introduction of lattice defects which result in an appearance of residual stresses in structures can lead to the nanomaterial strengthening.

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