نتایج جستجو برای: hydrogen evolution reaction her

تعداد نتایج: 956212  

2018
Xing Zhang Yongye Liang

Molybdenum disulfide (MoS2)-based materials have been recently identified as promising electrocatalysts for hydrogen evolution reaction (HER). However, little work has been done to improve the catalytic performance of MoS2 toward HER in alkaline electrolytes, which is more suitable for water splitting in large-scale applications. Here, it is reported that the hybridization of 0D nickel hydr(oxy...

Journal: :Chinese Journal of Catalysis 2021

Two-dimensional materials (2D) with unique physicochemical properties have been widely studied for their use in many applications, including as hydrogen evolution catalysts to improve the efficiency of water splitting. Recently, typical 2D MoS2, graphene, MXenes, and black phosphorus investigated application reaction (HER). In this review, we summarize three efficient strategies—defect engineer...

2016
Hui Pan

Cheap and abundant electrocatalysts for hydrogen evolution reactions (HER) have been widely pursued for their practical application in hydrogen-energy technologies. In this work, I present systematical study of the hydrogen evolution reactions on MXenes (Mo2X and W2X, X = C and N) based on density-functional-theory calculations. I find that their HER performances strongly depend on the composit...

Journal: :Energy Science & Engineering 2022

Abstract Developing high‐efficiency electrocatalysts for hydrogen evolution reaction (HER) has been considered as a crucial way to reduce energy loss in water‐splitting. Herein, heterogeneous NiSe 2 /MoSe (H‐NiSe ) nanocomposite constructed by metallic nanocrystallites embedded few‐layer MoSe nanosheets situ synthesized simple hydrothermal reaction. As an HER electrocatalyst, it delivers superi...

Journal: :ChemNanoMat 2023

The cover image illustrates the effect of doping chemistry on catalytic activity carbon materials. Carbon materials can be modified with different dopants to tune their physicochemical properties for many applications, including hydrogen evolution reaction (HER), oxygen (OER), and reduction (ORR). For this reason, carbon-based are promising electro/photocatalysts. More information found in Revi...

Journal: :Catalysts 2022

Densely aligned CoS2 nanowires (NWs) on chemically durable stainless steel fibers felt (SSF) substates were synthesized by thermal sulfuring Co3O4 NWs, which oxidized from hydrothermal Co(OH)y(CO3)(1?0.5y)·nH2O NWs precursors. The effect of sulfuration temperature the composition, morphology, and HER performance products was studied in detail. results show that high purity together with enlarge...

Journal: :Chinese Journal of Catalysis 2022

Single nanoparticle (NP) collisions technique has been widely employed in electrocatalysis. However, the short collision duration of single NPs hinders further improvement their electrocatalytic performance. Here, to increase dynamic electron tunneling region, enhanced near-wall hindered diffusion is introduced stochastic process by coupling a Au ultramicroelectrode (UME) with confined microcha...

Journal: :Scientific reports 2016
Yundan Liu Long Ren Zhen Zhang Xiang Qi Hongxing Li Jianxin Zhong

We successfully developed a simple electrophoretic deposition (EPD) method to decorate the MoSe2 nanosheets on the carbon fiber surface of carbon cloth (MoSe2/CC). With this process, MoSe2 nanosheets can be uniformly and tightly deposited on this flexible conductor to form a 3D binder-free electrode for hydrogen evolution reaction (HER). The film thickness can also be controlled by the EPD time...

Journal: :Electrochemistry Communications 2021

The growing consumption of global energy has posed serious challenges to environmental protection and supplies. A promising solution is via introducing clean sustainable sources, including photoelectrochemical hydrogen fuel production. 2D materials, such as transition metal trichalcogenphosphites (MPCh3), are gaining more interest for their potential photocatalysts. Crystals selenophosphites, n...

Journal: :Angewandte Chemie 2015
Carlos G Morales-Guio Laurent Liardet Matthew T Mayer S David Tilley Michael Grätzel Xile Hu

The splitting of water into hydrogen and oxygen molecules using sunlight is an attractive method for solar energy storage. Until now, photoelectrochemical hydrogen evolution is mostly studied in acidic solutions, in which the hydrogen evolution is more facile than in alkaline solutions. Herein, we report photoelectrochemical hydrogen production in alkaline solutions, which are more favorable th...

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