A5003541956- Hydrogen Storage and Materials
- Ammonia Synthesis and Nitrogen Reduction
- MXene and MAX Phase Materials
- Advanced Chemical Physics Studies
- Muon and positron interactions and applications
- Electrocatalysts for Energy Conversion
- Advanced Battery Technologies Research
- Hybrid Renewable Energy Systems
- Supercapacitor Materials and Fabrication
- Advanced Optimization Algorithms Research
- Nanoporous metals and alloys
- Advanced Battery Materials and Technologies
- Catalysis and Hydrodesulfurization Studies
- Matrix Theory and Algorithms
- Nanomaterials for catalytic reactions
- Advancements in Battery Materials
- Numerical Methods and Algorithms
Korea Advanced Institute of Science and Technology
2021-2025
Sandia National Laboratories California
2021
University of Arizona
2004
With global efforts to relieve the formidable impact of climate change, hydrogen is considered a viable replacement for fossil fuels without intermittency concerns other renewable sources. Hydrogen storage plays pivotal role in implementation economy, coupling production with fuel cell technologies. Storing form solid-state hydride materials has been studied as future technology enabling safe, energy-efficient, and high-energy-density system. However, hostile thermodynamic kinetic properties...
Nanoencapsulation using graphene derivatives enables the facile fabrication of two-dimensional (2D) nanocomposites with unique microstructures and has been generally applied to many fields energy materials. Particularly, metal hydrides such as MgH2 encapsulated by have emerged a promising hybrid material for overcoming disadvantageous properties Mg-based hydrogen storage. Although behavior graphene-Mg nanoencapsulation interface studied composite materials, direct modification nonmetal...
A general problem when designing functional nanomaterials for energy storage is the lack of control over stability and reactivity metastable phases. Using high-capacity hydrogen candidate LiAlH4 as an exemplar, we demonstrate alternative approach to thermodynamic stabilization metal hydrides by coordination nitrogen binding sites within nanopores N-doped CMK-3 carbon (NCMK-3). The resulting LiAlH4@NCMK-3 material releases H2 at temperatures low 126 °C with full decomposition below 240 °C,...
Abstract This study introduces monolithic three‐dimensional nanoporous magnesium (3D‐NPMg) fabricated through a scalable solution‐based dealloying process as electrodes. By employing naphthalene‐based reductive environment, this approach forms hierarchically porous 3D structure with clean metallic surfaces, thereby forming free‐standing bicontinuous nanostructure. The resulting 3D‐NPMg addresses critical challenges in metal battery (MMB) anodes, including high polarization, dendritic growth,...
Light metal-based nanomaterials are widely used for energy storage due to their high density and surface-to-volume ratio. However, reactivity is paradoxically both the source of advantageous properties a hurdle fabrication stable nanostructures. Here, we demonstrate formation nanoporous Mg via chemical redox agent-driven dealloying, which ensures minimized surface passivation results in fine nanostructures with <50 nm interconnected metallic ligament despite labile Mg. The thin layer...
Lithium (Li) metal has been regarded as the ideal anode for rechargeable batteries due to its low reduction potential and high theoretical capacity. However, formation of fatal Li dendrites during repeated cycling shortens battery life causes serious safety concerns. Functionalized separators with electrically conductive lithiophilic coating layers potentially inhibit dendrite growth on anodes by providing nucleation sites reversible deposition/stripping. In this work, we propose...
Linear constraints arise in formulation of several computationally challenging problems such as weather modeling, underground water air pollution modeling etc. The may correspond to multiple observations that place upper or lower bounds on linear combinations variables. Computing a feasible solution solving these inequalities least squares sense is fundamental problem many applications.In this paper, we present strikingly simple numerical algorithm called UNA (Unified Numerical Approach)...
Abstract A general problem when designing functional nanomaterials for energy storage is the lack of control over stability and reactivity metastable phases. Using high-capacity hydrogen candidate LiAlH 4 as an exemplar, we demonstrate a new approach to thermodynamic stabilization metal hydrides by coordination nitrogen binding sites within nanopores N-doped CMK-3 carbon (NCMK-3). The resulting @NCMK-3 material releases H 2 at temperatures low 126 °C with full decomposition below 240 °C,...