نتایج جستجو برای: proton conductivity

تعداد نتایج: 115521  

Journal: :Angewandte Chemie 2021

The controlled bottom-up design of polymers with metal oxide backbones is a grand challenge in materials design, as it could give unique control over the resulting chemical properties. Herein, we report 1D-organo-functionalized polyoxometalate polymer featuring purely inorganic backbone. self-assembled from two types monomers, Wells–Dawson-type polyoxometalates, and aromatic organo-boronates. T...

Journal: :Physical chemistry chemical physics : PCCP 2015
Swagata Pahari Sudip Roy

We performed first principles molecular dynamics simulations to elucidate the mechanism and role of 1,2,3-triazole in proton transport while it is mixed with phosphoric acid (PA) and a phosphoric acid imidazole mixture. PA doped imidazole based polymer acts as an efficient polyelectrolyte membrane for fuel cells. The conductivity of this membrane increases when triazole is added to the system. ...

Journal: :Acta Crystallographica Section A Foundations and Advances 2017

Journal: :Journal of Power Sources 2021

A-cation deficiency has a significant impact on the properties of proton-conducting perovskites (ABO 3 ), depending factors such as ionic radius, concentration dopant and degree substoichiometry A-site cation. Here, we focus influence Ba structure, stability partial electrical conductivities perovskite BaCe 0.8 Y 0.2 O 3-δ (BCY20). Neutron powder diffraction is employed to determine monoclinic ...

Journal: :Faraday discussions 2007
Sossina M Haile Calum R I Chisholm Kenji Sasaki Dane A Boysen Tetsuya Uda

The compound CsH2PO4 has emerged as a viable electrolyte for intermediate temperature (200-300 degrees C) fuel cells. In order to settle the question of the high temperature behavior of this material, conductivity measurements were performed by two-point AC impedance spectroscopy under humidified conditions (p[H2O] = 0.4 atm). A transition to a stable, high conductivity phase was observed at 23...

Journal: :Polymer 2022

Proton transfer in polymer electrolyte membrane is an essential mechanism fuel cell (PEMFC). The development of PEM mostly relies on modification with proton conductive species followed by casting. This brings the random existence to result a limit conductivity. present work proposes alignment species, i.e., donor and acceptor chains, through surface-initiated polymerization so that proceeds ef...

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