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Energy

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Displaying 51 - 75 of 571

Quantifying Reactor Power Noise - A Case Study on NIST Research Reactor

May 26, 2023
Author(s)
Anil Gurgen, Dagistan Sahin, James R. Whipple
Water cooled reactors experience reactivity changes when voids are present in the coolant. The fraction of coolant in the core diminutions in the event of boiling, and the reactivity feedback can either be positive due to reducing neutron absorption in the

High-throughput printing of combinatorial materials from aerosols

May 10, 2023
Author(s)
Minxiang Zeng, Yipu Du, Nicholas Kempf, Miles Bimrose, Jiahao Chen, Dylan Kirsch, Joshua B. Martin, Bowen Zhang, Tatsunori Hayashi, Mortaza Saeidi-Javash, Hirotaka Sakaue, Babak Anasori, Michael McMurtrey, Yanliang Zhang
The development of new materials and their compositional and microstructural optimization are essential in regard to next-generation technologies such as clean energy and environmental sustainability. However, materials discovery and optimization have been

Phosphate-Functionalized MOF-808 for High Performance Li-S Batteries

May 8, 2023
Author(s)
Bingqian Liu, Avery Baumann, Megan Butala, V. Sara Thoi
Lithium–sulfur batteries are promising candidates for next-generation energy storage devices due to their outstanding theoretical energy density. However, they suffer from low sulfur utilization and poor cyclability, greatly limiting their practical

The optical and magnetic properties of Ru-doped hybrid improper perovskite Ca3Mn2O7 via experimental and first-principles calculations

April 7, 2023
Author(s)
Kejia Yuan, Hanwen Zhang, Tianqi Xiao, Zhiyan Li, Winnie Wong-Ng, Wei Zhou, Chao Wang, Shouyu Wang, Weifang Liu
The quasi-2D Ruddlesden-Popper layered perovskites with single-phase multiferroicity have attracted much attention in recent magnetoelectric memory applications. We have systematically investigated the optical and magnetic properties of Ru-doped hybrid

Considering Interoperability for Electric Vehicle Charging: A Commission Case Study

March 13, 2023
Author(s)
Cuong Nguyen, Avi Gopstein, Danielle Sass Byrnett, Kerry Worthington, Christopher Villarreal
As adoption of electric vehicles (EVs) increases across the United States and charging equipment to power vehicles is installed, the electricity system, states, utilities, EV manufacturers, EV supply equipment (EVSE) manufacturers, and stakeholders are

Structural and thermal properties of Eu2Ga11Sn35

March 3, 2023
Author(s)
Wilarachchige Gunatilleke, Mingjian Zhang, Winnie Wong-Ng, Peter Zavalij, George S. Nolas
Clathrates have been reported in a variety of different structure types, however, inorganic clathrate-I materials with a low-cation concentration have yet to be investigated while tin-based compositions have been much less investigated as compared to

Dynamic structural and microstructural responses of a metal organic framework type material to carbon dioxide under dual gas flow and supercritical conditions

February 1, 2023
Author(s)
Andrew J. Allen, Eric J. Cockayne, Winnie Wong-Ng, Jeffrey Culp, Ivan Kuzmenko
The structural and microstructural responses of a model metal-organic framework (MOF) material, Ni(3-Methy-4,4'-bipyridine)[Ni(CN)4] (Ni-BpyMe or PICNIC 21), to CO2 adsorption and desorption are reported for in situ small-angle X-ray scattering (SAXS) and

Entering New Era of Thermoelectric Oxide Ceramics with High Power Factor through Designing Grain Boundaries

January 12, 2023
Author(s)
Cesar-Octavio Romo-De-La-Cruz, Yun Chen, Liang Liang, Sergio Paredes-Navia, Winnie Wong-Ng, Mark Williams, Xueyan Song
Thermoelectric (TE) oxide ceramics could play a significant role in waste heat recovery using TE generators, accelerating clean energy generation and achieving net-zero emissions. In 2003, the TE performance of single-crystal Ca3Co4O9+δ was evaluated with

Validation of and Optimization with a Vapor Compression Cycle Model Accounting for Refrigerant Thermodynamic and Transport Properties: With Focus on Low GWP Refrigerants for Air-Conditioning

November 26, 2022
Author(s)
Harrison M. Skye, Piotr A. Domanski, Riccardo Brignoli, SANGHUN LEE, Heunghee Bae
CYCLE_D-HX is a semi-theoretical model that simulates the performance of a vapor-compression cycle with forced-convection heat exchangers for specified temperature profiles of the heat source and heat sink. In this study, we validated CYCLE_D-HX using

Hyperspectral Imaging of Localized, Optically-Active Defects in GaAs Solar Cells

November 14, 2022
Author(s)
Behrang Hamadani, Margaret Stevens, Brianna Conrad, Matthew Lumb, Eric Armour, Kenneth Schmieder
A novel hyperspectral imaging instrument with dual electroluminescence and photoluminescence capability was used to image and analyze localized radiative defects in rear-junction GaAs solar cells grown at 1 µm/min. The absolute photon emission rates were

High-Throughput Nanopore Fabrication and Classification Using Xe-Ion Irradiation and Automated Pore-Edge Analysis

September 26, 2022
Author(s)
Michal Macha, Sanjin Marion, Mukesh Tripathi, Martina Lihter, Alex Smolyanitsky, Andras Kis, Aleksandra Radenovic
Large-area nanopore drilling is a major bottleneck in state-of-the-art nanoporous 2D membrane fabrication protocols. In addition, high-quality structural and statistical descriptions of as-fabricated porous membranes are key to predicting the corresponding

Structural and electronic properties of Cu3InSe4

September 11, 2022
Author(s)
Oluwagbemiga Ojo, Winnie Wong-Ng, Teiyan Chang, Yu-Sheng Chen, George S. Nolas
Single crystals of the previously unascertained ternary chalcogenide Cu3InSe4 were obtained by induction melting, allowing for a complete investigation of the crystal structure by employing high-resolution single-crystal synchrotron X-ray diffraction

Energy Broadening of Neutron Depth Profiles by Thin Polyamide Films

September 7, 2022
Author(s)
Jamie Weaver, Anna Job, Kedar Manandhar, Ichiro Takeuchi, Robert Gregory Downing
A protective covering is often required for neutron depth profiling (NDP) measurements of sensitive materials (e.g., Li-ion batteries). Addition of this layer can increase NDP profile energy broadening and depth assignment uncertainty. This study evaluates

Visualizing Localized, Radiative Defects in GaAs Solar Cells

September 1, 2022
Author(s)
Behrang Hamadani, Margaret Stevens, Brianna Conrad, Matthew Lumb, Kenneth Schmieder
We have used a calibrated, wide-field hyperspectral imaging instrument to obtain absolute spectrally and spatially resolved photoluminescence images in high growth-rate, rear-junction GaAs solar cells from 300 K to 77 K. At the site of some localized

Atomically Dispersed CuNx Sites from Thermal Activation of Boron Imidazolate Cages for Electrocatalytic Methane Generation

August 12, 2022
Author(s)
Soumyodip Banerjee, Justin Gorham, Maxime Siegler, Natalia Drichko, Joshua Wright, Nicholas Bedford, Sara Thoi
Atomically dispersed heteroatom coordinated metal sites (ADMS) have been recognized as promising candidates for electrochemical conversion. Among a diverse range of molecular precursors for ADMS synthesis, framework materials are particularly interesting
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