Results 121 to 130 of about 3,212,715 (300)

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

open access: yesAdvanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su   +13 more
wiley   +1 more source

Proton transport in proton exchange membranes

open access: yes, 2007
This work investigated several proton exchange membranes (PEMs): perfluorosulfonic acid-based polymers (Nafion®), sulfonated poly(ether ether ketone) (S-PEEK), radiation-grafted ethylenetetrafluoroethylene-grafted-poly(styrene sulfonic) acid (ETFE-g-PSSA), sulfonated trifluorostyrene-co-substituted trifluorostyrene (BAM®), sulfonated polystyrene-b-poly(
openaire   +1 more source

Study on the Reaction Mechanism of RuOx and Its Enhanced Hydrogen Evolution Reaction Activity

open access: yesAdvanced Science, EarlyView.
In situ Raman spectroscopy and DFT calculations reveal that, prior to the onset of HER, the surface of RuOx undergoes reversible reduction and structural reconstruction. The resulting Ru(II)O/Ru(IV)O2 configuration is identified as the true catalytically active species.
Liquan Zhang   +9 more
wiley   +1 more source

Electrocatalyst Nanomaterials for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cells

open access: yes, 2011
As a new energy generator, proton exchange membrane fuel cells(PEMFCs) are expected to play a pivotal role in stationary and mobile applications due to their high power density and environmental benignancy.
张华民
core  

Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction

open access: yesAdvanced Science, EarlyView.
Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen   +5 more
wiley   +1 more source

Behaviors of proton exchange membrane fuel cells under oxidant starvation

open access: yes, 2011
Behaviors of proton exchange membrane fuel cells under oxidant starvationDurability is an important issue in proton exchange membrane fuel cells (PEMFCs) currently. Reactant starvation could be one of the reasons for PEMFC degradation.
Hou, Ming   +9 more
core   +1 more source

Carbon-based Electrecatalysts for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cells

open access: yes, 2011
Carbon-based Electrecatalysts for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel ...
钟和香
core   +1 more source

Programming Structural Symmetry and Emission in Low‐Dimensional Hybrid Perovskites via Time and Temperature

open access: yesAdvanced Science, EarlyView.
We demonstrate programmable structural symmetry and emission in benzylammonium‐based low‐dimensional hybrid perovskites. Continuous shaking transforms orthorhombic platelets into a lower‐symmetry monoclinic phase with broadband emission, whereas thermal activation drives the reverse pathways toward a higher‐symmetry configuration resembling the ...
Luiz G. Bonato   +7 more
wiley   +1 more source

R&D Activities on Proton Exchange Membrane Fuel Cells for Vehicles in China

open access: yes, 2007
As a promising candidate for new power supplier, Proton Exchange Membrane Fuel Cell (PEMFC) is on the way of its commercialization. Durability, cost, hydrogen generation and distribution are the main issues of the PEMFC wide application.
孙公权, 衣宝廉, 俞红梅
core  

Trafficking Deficiency of TMEM175 Variants in Parkinson's Disease Pathogenesis and the Prospects of Precision Medicine

open access: yesAdvanced Science, EarlyView.
This study identifies that the PD‐associated TMEM175‐L156P variant disrupts lysosomal ion channel trafficking by causing aberrant endoplasmic reticulum retention. A “chaperone–agonist” bifunctional small molecule restores TMEM175‐L156P lysosomal localization and channel function, thereby alleviating PD‐relevant cellular phenotypes and highlighting a ...
Ting Luo   +17 more
wiley   +1 more source

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