Related Experiment Video
Updated: Jul 4, 2025
06:32
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
Published on: August 17, 2016
19.6K
Li Decorated Penta-BCN as a Competitive Reversible Hydrogen Storage Media: A First-Principles Study
Yebai Shi1, Jie Ren2, Hua Tang3
1School of Electric and Electrical Engineering, Shangqiu Normal University, Shangqiu 476000, China.
Langmuir : the ACS Journal of Surfaces and Colloids
|February 6, 2024
Summary
Researchers developed lightweight Li-decorated penta-boron carbon nitrides (penta-BCNs) for efficient hydrogen storage. This novel material exceeds the U.S. Department of Energy
Area of Science:
- Materials Science
- Energy Storage
- Computational Chemistry
Background:
- Hydrogen is a promising clean energy carrier, necessitating efficient and stable storage media.
- Existing storage materials face challenges in gravimetric capacity, stability, and weight.
Purpose of the Study:
- To design and investigate novel materials for efficient hydrogen storage.
- To explore the potential of lithium-decorated penta-boron carbon nitrides (penta-BCNs) for hydrogen adsorption.
Main Methods:
- Utilized first-principles calculations to model Li-decorated penta-BCNs.
- Analyzed binding energies, hydrogen adsorption capacity, and electronic structures.
- Investigated structural stability and deformation under Li decoration.
Main Results:
- Achieved stable chemical complex formation between Li atoms and penta-BCNs (binding energy: -2.21 eV).
- Demonstrated high hydrogen storage capacity: up to 27 H2 molecules per unit, reaching 7.44 wt %.
- Identified a polarization enhancement mechanism due to charge transfer from Li to penta-BCN.
Conclusions:
- Li-decorated penta-BCN is a promising material for hydrogen storage, exceeding the DOE target of 5.5 wt %.
- The material exhibits excellent stability and lightweight properties.
- Findings inspire the design of new materials for clean energy applications.
Related Concept Videos
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.3K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.3K
01:20¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
1.1K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.1K