Results 111 to 120 of about 35,743 (307)

Modeling the effects of gas channel flooding on the voltage-current characteristics of PEM fuel cell

open access: yes, 2010
It has been reported recently that water flooding in the gas channel (GC) has significant effects on the voltage-current characteristics of a proton exchange membrane (PEM) fuel cell.
Tan, SC   +9 more
core   +1 more source

Droplet Electricity Generators With Maximized Energy Collection Zone Enabled by Aloe‐Inspired Midrib and Cuticle

open access: yesAdvanced Materials, EarlyView.
An Aloe‐pinspired droplet electricity generator (A‐DEG) overcomes the limited energy collection zone of conventional DEGs by guiding impact droplets through a channeling midrib and artificial cuticle. The channeling midrib induces uni‐directional droplet spreading, while the artificial cuticle on the midrib further reinforces this behavior through its ...
Gibeom Lee   +8 more
wiley   +1 more source

Fuel element transient temperature studies.

open access: yes, 1961
A method is presented for the analysis of transient temperatures in a homogeneous circular cylindrical fuel element in a coolant channel with no axial conduction and no heat loss to the channel wall. In addition, some results are obtained for mean fuel
Thompson, JJ
core  

Numerical Research on Complex Convection in the Fuel Transfer Channel

open access: yes, 2010
An investigation is made on the thermal transfer characteristic of horizontal convection in the fuel transfer channel. The convection is a complex 3-D flow.
Qiang Guo
core   +1 more source

Numerical Study on Coolant Flow and Heat Transfer Characteristics in Annular Fuel

open access: yesYuanzineng kexue jishu, 2023
Annular fuel element is a new type of fuel element proposed by Massachusetts Institute of Technology. The fuel element structure adopts double channel cooling structure with internal and external cooling simultaneously. Compared with the traditional rod-
ZHOU Yunlong;WU Mingting;HUANG Na;LI Hongwei
doaj  

Unveiling Exsolution‐Induced Giant Electronic and Magnetic Property Changes in Non‐Stoichiometric Titanate Perovskite Thin Films

open access: yesAdvanced Materials, EarlyView.
A giant insulator to metal transition and emergent superparamagnetism are revealed by nanoparticle exsolution in non‐stoichiometric titanate perovskite thin films. By combining transport, synchrotron spectroscopy, and first‐principles calculations, this work reveals how defect reconfiguration and lattice reconstruction fundamentally reshape electronic ...
Sungil Kim   +11 more
wiley   +1 more source

Innovative Fuel Designs for High Power Density Pressurized Water Reactor

open access: yes, 2005
One of the ways to lower the cost of nuclear energy is to increase the power density of the reactor core. Features of fuel design that enhance the potential for high power density are derived based on characteristics of the pressurized water reactor ...
Kazimi, Mujid S.   +2 more
core  

Recent Progress in the Phase‐Controlled Synthesis of Ruthenium Nanocrystals for Catalytic Applications

open access: yesAdvanced Materials, EarlyView.
Template effect and kinetic control enable crystal‐phase engineering of Ru nanocrystals, granting access to either metastable fcc‐Ru or stable hcp‐Ru with distinct surface structures, thermal stabilities, and catalytic behaviors. Moreover, the hcp‐Ru can further serve as an epitaxial template to direct Pd and Rh nanocrystals into the metastable hcp ...
Jianlong He   +3 more
wiley   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

open access: yesAdvanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen   +7 more
wiley   +1 more source

Theory Guided Fine‐Tune of Strain Effects in Pt Ternary Alloy via Rare Earth Templating: Achieving High Performance PEMFCs Catalysts

open access: yesAdvanced Materials, EarlyView.
Theory‐guided strain engineering and rare‐earth templating are combined to create Pt5(Ce)Co@Pt multilayer nanoparticles with a Pt5Co‐like sublayer that fine‐tunes *OH binding near the ORR volcano optimum. The resulting catalyst delivers exceptional mass activity and remarkable long‐term PEMFC durability, revealing a strategy for designing highly active
Qi Zhang   +15 more
wiley   +1 more source

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