Results 81 to 90 of about 2,580,692 (358)

Synergistic Mn-Co catalyst outperforms Pt on high-rate oxygen reduction for alkaline polymer electrolyte fuel cells

open access: yesNature Communications, 2019
Alkaline polymer electrolyte fuel cells are a class of fuel cells that enable the use of non-precious metal catalysts, particularly for the oxygen reduction reaction at the cathode.
Ying Wang   +15 more
semanticscholar   +1 more source

Current Density Performances in Poly Ether Ether Keton Membrane for Direct Methanol Fuel Cells [PDF]

open access: yes, 2012
The objective of this study focuses on the characterization of poly ether ether ketone (PEEK) membranes for direct methanol fuel cells (DMFC) application. The PEEK membrane was modified with sulfonation in NMP solvent.
E. L. , Dewi   +5 more
core  

Fast Charge–Discharge of LiNi0.9Co0.05Mn0.05 Enabled by a Bikitaite‐Infused Separator for Li Metal Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A bikitaite‐infused cellulose separator is introduced for Li metal batteries, leveraging bikitaite zeolite's ion‐conductive properties to regulate Li+‐ion flux and suppress dendrite growth. The membrane design ensures uniform Li plating, enhanced electrolyte wettability, and robust thermal/mechanical stability, delivering stable performance and low ...
Isheunesu Phiri   +2 more
wiley   +1 more source

Cross-linked beta alumina nanowires with compact gel polymer electrolyte coating for ultra-stable sodium metal battery

open access: yesNature Communications, 2019
Sodium metal batteries have potentially high energy densities, but severe sodium-dendrite growth and side reactions prevent their practical applications, especially at high temperatures.
D. Lei   +19 more
semanticscholar   +1 more source

Increase of Solid Polymer Electrolyte Ionic Conductivity Using Nano-SiO2 Synthesized from Sugarcane Bagasse as Filler

open access: yes, 2021
The synthesize of solid polymer electrolyte (SPE) based on polyethylene oxide (PEO), NaClO4 and nano-SiO2 was carried out by solution cast technique. Nano-SiO2 was synthesized from sugarcane bagasse using sol-gel method.
Suprapto Suprapto   +2 more
core   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim   +21 more
wiley   +1 more source

Conducting Polymers and Polymer Electrolytes [PDF]

open access: yes, 2002
The study of conductive polymers is a rapidly growing area in polymer chemistry. Since conductive polymers carry a charge, they are used in a wide variety of applications. This book examines a subset within the area of conductive polymers: the electrochemistry that occurs at the interface between conductive polymers and solutions.
openaire   +1 more source

A Parallel Bicomponent TPU/PI Membrane with Mechanical Strength Enhanced Isotropic Interfaces Used as Polymer Electrolyte for Lithium-Ion Battery

open access: yes, 2019
In this work, a side-by-side bicomponent thermoplastic polyurethane/polyimide (TPU/PI) polymer electrolyte prepared with side-by-side electrospinning method is reported for the first time.
Chaochao Yang   +5 more
core   +1 more source

Reduced-dimensional models for straight-channel proton exchange membrane fuel cells [PDF]

open access: yes, 2010
A comprehensive description of proton exchange membrane fuel cell (PEMFC) performance includes the transport phenomena, phase change and electrochemical reaction inside the several components, which possess disparate characteristics and together form a ...
Sui, P.C.   +5 more
core   +1 more source

Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor

open access: yes, 2022
Solid polymer electrolytes show their potential to partially replace conventional electrolytes in electrochemical devices. The solvent evaporation rate represents one of many options for modifying the electrode–electrolyte interface by affecting ...
Sedlakova, Vlasta   +13 more
core   +1 more source

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