Hydrogen fixation is a difficult task to carry at speed

He hulahula paʻakikī ka hoʻopaʻa ʻana o ka hydrogen i ka lawe ʻana i ka wikiwiki

Hydrogen absorption in the surface of magnesium diboride was studied with preliminary models. aie: ACS applied to objects and users (2022). DOI: 10.1021 / acsami.1c23524

Scientists at Lawrence Livermore National Laboratory (LLNL) have compared the return of hydrogen in a condenser and found out why hydrogen removal is delayed when the condenser enters the cell. hydrogen, which provides information that can be used for improvement.

Improving hydrogen retention in solid solids is related to a better understanding of the multistep chemical effects that occur in complex bonds. In these experiments, the material changes from a hydrogen-free state to a hydrogen-saturated state as its molecules are bonded and bound with hydrogen and rearranged. Various changes in the chemical and electrochemical conditions affect the energy supply, from hydrogen receptors to batteries.

To show the basic activities related to the hydrogenation of magnesium diboride (MgB2), a group of LLNL scientists who used molecular dynamics simulations. They found magnesium ions (Mg2+) to facilitate the electrical polarization of the molecular particles and to further provide the critical charge for the separation of boron (B) from the original MgB.2 it is up to the binding of hydrogen to B atoms to form hydrogen-saturated Mg (BH4)2 pae. Specifically, near Mg2+ The ions bind to the BHX particles, allowing the well -charged intermediate boron atom to be attracted and bound with the hydrogen anions, which are positively charged by interaction with Mg.2+. The research is reported in the journal ACS applied to objects and users.

The explanation presented an explanation that could delay the transfer of hydrogen to MgB2 Of Mg (BH4)2 established, which prevents complete hydrogenation without high temperature and pressure in the experiments. Boron in hexagonal layers of MgB2 It is not stable, and therefore it is easier to bind hydrogen during Mg-poor conditions. However, when the substance is converted to Mg (BH4)2surfaces of residual MgB2 More valuable Mg, slows down hydrogenation.

“Our simulations capture the response pathways to MgB2 lead to hydrogen absorption, ”says LLNL physicist and author Keith Ray.

Other LLNL writers include ShinYoung Kang, Liwen Wan, Sichi Li, Tae Wook Heo, Jonathan Lee, Alexander Baker and Brandon Wood.


Contamination of film materials for good hydrogen conservation


More information:
Keith G. Ray et al, Understanding Hydrogenation Chemistry in MgB2 Reactive Edges from Ab Initio Molecular Dynamics, ACS applied to objects and users (2022). DOI: 10.1021 / acsami.1c23524

Presented by Lawrence Livermore National Laboratory

Directions: The impact of conserving hydrogen on fast transport (2022, March 30) Retrieved 31 March 2022 from https://phys.org/news/2022-03- hydrogen-storage-reactions-complex-faster.html

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