Results 91 to 100 of about 327,547 (230)

A Mixed‐Ligand Metal–Organic Framework Strategy to Construct High‐Density O/S‐Shelled Ag Nanoparticle Electrocatalysts for Syngas Modulation

EcoEnergy, EarlyView.
Mixed‐ligand Ag–triazole MOF precursors reconstruct into ligand‐shelled Ag nanoparticle electrocatalysts that retain detectable O/S‐derived interfacial species. By combining ligand‐ratio and potential control, the CO2‐to‐syngas output can be tuned across H2‐rich, near‐equimolar, and CO‐rich regimes.
Ren‐Feng Yang, Xu‐Dong Wu, Yu‐Die Zhang, Wei‐Peng Chen, Xiao‐Hui Li, Qi Zhou, Kai‐Zhong Zhang, Xian‐Yue Song, Hao‐Ran Chu, Hai‐Feng Zhang, Xiao‐Hong Xiong, Mian Li, Xiao‐Chun Huang   +12 more
wiley   +1 more source

Crossover operators to control size growth in linear GP and variable length GAs [PDF]

, 2008
In various nuances of evolutionary algorithms it has been observed that variable sized genomes exhibit large degrees of redundancy and corresponding undue growth. This phenomenon is commonly referred to as bloat. The present contribution investigates the
Dominique Chu, Chu, D, Jonathan E. Rowe, Rowe, Jonathan, Chu, Dominique   +4 more
core   +1 more source

Metal‐Free Halogen‐Engineered Carbon Nanotubes for Highly Efficient Oxygen Reduction Reaction

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In work employs density functional theory screening to guide the halogen engineering of metal‐free, Cl‐mediated carbon nanotubes for a highly efficient oxygen reduction reaction (ORR). Cl‐mediation optimally tunes the electronic structure and binding energies of oxygen intermediates, delivering an ORR activity rivaling that of commercial Pt/C, high 4e−
Kai Zhao, Mengni Liu, Xia Zhang, Fucheng Wu, Linfeng Li, Yuxiao Liu, Muhammad Humayun, Hussein A. Younus, Xinying Xue, Sadegh Rostamnia, Jian Xia, Chundong Wang   +11 more
wiley   +1 more source

From Methanol concentration to thermal performance: insight into Nafion/Lignosulfonate-Hydroxyapatite composite membranes for direct Methanol fuel cell

Energy Nexus
This study evaluates the recast Nafion (rN)/lignosulfonate (LS)-hydroxyapatite (HAP) composite membranes in passive direct methanol fuel cell (DMFC) across range of methanol concentration and thermal operation.
O.S.J. Elham, S.K. Kamarudin, N. Shaari, A.M. Zainoodin, S.H. Osman, M.R. Yusof   +5 more
doaj   +1 more source

Hydrogen Production With Water Electrolysis Technologies: Advances, Performance, and Potential Use for Low‐Gradient Combustion

Energy Science &Engineering, EarlyView.
This review links recent advances in water electrolysis with hydrogen utilization in low‐gradient combustion systems. While hydrogen eliminates direct CO2 emissions, its environmental and economic benefits depend strongly on production pathways, system‐level efficiency, and NOx mitigation through MILD/FLOX/HiTAC combustion.
Rafał Buczyński, Przemysław Draga
wiley   +1 more source

Methanol Crossover in Direct Methanol Fuel Cells

, 2012
Direct Methanol Fuel Cells (DMFCs) are considered a great alternative to lithium-ion batteries for powering the next generation of mobile devices. However, methanol crossover in DMFCs is a serious drawback to the cell’s performance.
Matar, Saif
core   +2 more sources

U.S. DOE Progress Towards Developing Low-Cost, High Performance, Durable Polymer Electrolyte Membranes for Fuel Cell Applications

Membranes, 2012
Low cost, durable, and selective membranes with high ionic conductivity are a priority need for wide-spread adoption of polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs).
Dimitrios C. Papageorgopoulos, Reginald Tyler, Jason Marcinkoski, Kathi Epping Martin, Donna Lee Ho, Nancy L. Garland, David Peterson, John Kopasz, Jacob S. Spendelow, Greg J. Kleen, Cassidy Houchins   +10 more
doaj   +1 more source

Intensity Noise Dynamics in Terahertz Quantum Cascade Lasers

Laser &Photonics Reviews, EarlyView.
Intensity‐noise dynamics in terahertz quantum cascade lasers are investigated across single‐mode, dense‐comb and harmonic‐comb regimes using graphene thermoelectric detectors. Harmonic combs show ∼10% lower relative intensity noise, while RIN scales as P0−γ$P_0^{ - \gamma }$ with γ≈1.2$\gamma \approx 1.2$, revealing a crossover from spontaneous ...
M. Alejandro Justo‐Guerrero, Leonardo Viti, Vladimir Pushkarev, Lianhe Li, Edmund H. Linfield, Miriam S. Vitiello   +5 more
wiley   +1 more source

From Planar to 3D Nanophotonic Lenses: Advancing Design, Fabrication, and Applications

Laser &Photonics Reviews, EarlyView.
Three‐dimensional nanophotonic lenses are enabled by an integrated workflow that links design parameterization, full‐wave electromagnetic simulation, computational optimization, and freeform fabrication. This Review summarizes how these tools expand optical design freedom beyond a single patterned plane by enriching the local meta‐atom response and ...
Wei Zhu, Lyudmila V. Goncharova, Eric Johlin   +2 more
wiley   +1 more source

Controlling the Dynamic Conversion Process of the Water Molecules on the Electrolyte Interface for Producing Free Water

National Materials, EarlyView.
GDY has the capability to reorganize the interfacial H2O structure on the MnOx surface, enabling the rapid evolution of free‐H2O and protons within the electrical double layer, thus promoting the performance of MnOx toward acidic water oxidation.
Xinyu Ping, Siyi Chen, Yunhao Zheng, Siao Chen, Chengcheng Dong, Yurui Xue, Yuliang Li   +6 more
wiley   +1 more source