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Hydrogen - Astrophysics Data System

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Last Updated: 18 August 2022

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Electrocatalytic Study for Hydrogen Evolution Reaction on MoS$_2$/BP and MoSSe/BP in Acidic Media

As MoS a hydrogen production by electrochemical hydrogen evolution reaction is being actively investigated by non-precious-metal based electrocatalysts that are earth-abundant and low cost. Boron Phosphide, the second component monolayer, is most suitable as an electrode material in both oxygen and water environments, due to its chemical stability. To determine the minimum energy pathways for Tafel and Heyrovsky reactions, the scaling image nudged elastic band method has been used. According to the estimates, Tafel reaction shows no reaction barrier. In comparison to that in the BP monolayer, we have a low reaction barrier in the vdW HTSs as a result of Heyrovsky's reaction. However, MoSSe/BP achieves a believable Heyrovsky reaction with no reaction barrier in the case of poor coverage and 1/3 H _2 conc.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220807971S/abstract


Power sector effects of alternative production and storage options for green hydrogen

However, the wider effects of providing green hydrogen are not well understood so far. To look at potential power sector interactions of three alternative supply chains for green hydrogen in Germany in the year 2030, we use an open-source electricity sector model. Our study aims to inform other energy system modelers as well as policy makers. The results show that large-scale hydrogen storage can provide valuable flexibility to the power system in environments with high renewable energy rates. We also found that the effects of green hydrogen production on the optimal generation portfolio are highly dependent on the model assumptions regarding capacity expansion prospects. We also find the possibility of a distributional effect of green hydrogen production on other electricity consumers, which policy makers should be aware of.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220807302K/abstract


Large spin Hall conductivity and excellent hydrogen evolution reaction activity in unconventional PtTe1.75 monolayer

The patterned monolayer with kagome lattice created by the well-ordered Te vacancy's well-ordered Te vacancy, with large spin Hall conductivity and high hydrogen evolution reaction capacity is based on first-principles estimates. Our findings not only provide a new way to find 2D materials with high SHC content, i. e. by introducing inversion-symmetry breaking vacancies in large SOC systems, but also provide a dependable method with tunable SHC and high HER activity.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220807212S/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions