Efficient hydrogen evolution reaction at the phase transition boundary of polymorphic Mo1−xWxTe2

Kim, Jeong Hyo; Lee, Da Yeon; Eshete, Yonas Assefa; Yang, Heejun; Cho, Suyeon

doi:10.1063/5.0092997

Cited by 5 publications

(5 citation statements)

References 37 publications

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“…Additionally, Suyeon et al. presented findings on a series of Mo 1– x W x Te 2 catalysts . They demonstrated that by adjusting the doping ratio ( x ), it is possible to induce phase transitions among the semiconductor 2H phase, metallic 1T phase, and a mixed 2H–1T phase.…”

Section: Applicationsmentioning

confidence: 99%

“…Additionally, Suyeon et al presented findings on a series of Mo 1−x W x Te 2 catalysts. 177 They demonstrated that by adjusting the doping ratio (x), it is possible to induce phase transitions among the semiconductor 2H phase, metallic 1T phase, and a mixed 2H−1T phase. Notably, the HER catalytic activity of Mo 1−x W x Te 2 reaches its zenith at the boundary between the 2H and 1T phases when x = 0.09, achieving an impressive HER conversion rate of 0.692 s −1 (TOF value).…”

Section: Grain Boundarymentioning

confidence: 99%

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Spatially Confined Microcells: A Path toward TMD Catalyst Design

Guo,

Ma,

Wang

et al. 2024

Chem. Rev.

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With the ability to maximize the exposure of nearly all active sites to reactions, two-dimensional transition metal dichalcogenide (TMD) has become a fascinating new class of materials for electrocatalysis. Recently, electrochemical microcells have been developed, and their unique spatial-confined capability enables understanding of catalytic behaviors at a single material level, significantly promoting this field. This Review provides an overview of the recent progress in microcell-based TMD electrocatalyst studies. We first introduced the structural characteristics of TMD materials and discussed their site engineering strategies for electrocatalysis. Later, we comprehensively described two distinct types of microcells: the window-confined on-chip electrochemical microcell (OCEM) and the droplet-confined scanning electrochemical cell microscopy (SECCM). Their setups, working principles, and instrumentation were elucidated in detail, respectively. Furthermore, we summarized recent advances of OCEM and SECCM obtained in TMD catalysts, such as active site identification and imaging, site monitoring, modulation of charge injection and transport, and electrostatic field gating. Finally, we discussed the current challenges and provided personal perspectives on electrochemical microcell research.

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Section: Applicationsmentioning

confidence: 99%

Section: Grain Boundarymentioning

confidence: 99%

Spatially Confined Microcells: A Path toward TMD Catalyst Design

Guo,

Ma,

Wang

et al. 2024

Chem. Rev.

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Section: Devices With Homo- and Heterophase Interfacesmentioning

confidence: 99%

“…Since 2D materials have many types of active sites according to the lattice arrangements, many efforts have been devoted to studying the catalytic activity of the defects, dislocations, dopant atoms, edge atoms, , and phase interfaces , as shown in Figure A. The nanoscale probe techniques such as scanning tunneling microscopy (STM) and transmittance electron microscopy (TEM) have facilitated to study of the physical and chemical properties.…”

Section: Devices With Homo- and Heterophase Interfacesmentioning

confidence: 99%

Interface Engineering of 2D Materials for Highly Performing Electronic and Energy Devices

Hwang,

Lee,

Lee

et al. 2024

ACS Appl. Electron. Mater.

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The development of next-generation electronic and energy devices has required unprecedented active channels based on low-dimensional materials. One promising strategy is to use various interfaces in polymorphic 2D materials, which offer lateral and vertical as well as lattice and phase heterostructures with numerous geometries. The research direction has matured in terms of both materials science (i.e., synthesis) and physics (i.e., characterizations), and technological innovations for devices have been demonstrated through extensive studies of 2D materials. Here, we spotlight the critical results and promising approaches toward seamless atomic interfaces of 2D materials and their application in electronic and energy devices with 2D materialsbased interfaces. These include homo-and heterophase-based devices such as memristors, resonant tunneling transistors, and electrochemical cells. As the growth process and quality of large-area 2D materials have rapidly improved, our discussion of the current technological progress with 2D materials, their interfaces, and related physics provides timely information to researchers in this field.

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“…Thus, it is critical to develop a sensitive photodetector (PD) to monitor UVC radiation during daylight hours. [10][11][12] In recent years, wide bandgap semiconductors (E g > 4.43 eV), such as AlGaN, MgZnO, b-Ga 2 O 3 , GaN, NiO, BN, and LaAlO 3 , have been increasingly used to detect solar-blind UV. Studies related to UVC detectors and their respective performance are presented in Table 1.…”

Section: Introductionmentioning

confidence: 99%