Results 91 to 100 of about 198,175 (357)
Functionalization of Chitosan with Maleic Anhydride for Proton Exchange Membrane
Indonesian Journal of Chemistry, 2018 Chitosan was modified by maleic anhydride, and it was then functionalized using heterogeneous and blending method to obtain the membrane. The results of the reaction between chitosan with maleic anhydride were signed by the new peak appears around 1475 ...
Muhammad Ridwan Septiawan +4 more
doaj +1 more source
Unification Scale, Proton Decay, And Manifolds Of G_2 Holonomy [PDF]
, 2002 Models of particle physics based on manifolds of $G_2$ holonomy are in most respects much more complicated than other string-derived models, but as we show here they do have one simplification: threshold corrections to grand unification are particularly ...
Friedmann, Tamar, Witten, Edward
core +4 more sources
Advanced Functional Materials, EarlyView.Fe─NC porous oxygen reduction electrocatalysts are prepared employing a 2,4,6‐Triaminopyrimidine‐based porous organic polymer, a Mg2+ Lewis acid, and a low‐temperature cation exchange protocol. Using the polymer precursor achieves high pyrolysis yields and results in atomically dispersed FeNx sites. The resulting catalysts feature hierarchical porosity
Eliot Petitdemange +11 more
wiley +1 more source
Formation of the organic-inorganic proton exchange membrane
Trudy Odesskogo Politehničeskogo Universiteta, 2016 The use of electrolyzers for the low-temperature water electrolysis with the solid polymer membrane is perspective for production of hydrogen using renewable energy sources. However, the high cost of membrane materials obstructs the mass commissioning of
A.O. Maizelis +2 more
doaj +1 more source
Molecular determinants of pH regulation in the cardiac Na+-Ca2+ exchanger. [PDF]
, 2018 The cardiac Na+-Ca2+ exchanger (NCX) plays a critical role in the heart by extruding Ca2+ after each contraction and thus regulates cardiac contractility.
Goldhaber, Joshua I +4 more
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Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals
Advanced Functional Materials, EarlyView.This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee +4 more
wiley +1 more source
Proton Exchange Membrane Fuel Cells
Platinum Metals Review, 1997 Proton exchange membrane fuel cells operating on hydrogen/air are being considered as high efficiency, low pollution power generators for stationary and transportation applications. There have been many successful demonstrations of this technology in recent years. However, to penetrate these markets the cost of the fuel cell stack must be reduced. This
openaire +1 more source
Advanced Functional Materials, EarlyView.A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou +8 more
wiley +1 more source
Preparation and Proton Exchange Properties of GO Grafting modified Cross-linked Membranes
International Journal of Electrochemical Science, 2018 The cross-linked membranes were prepared with DS 68% SPEEK and epoxy resin. Sulfonated graphite oxide was grafted into SPEEK main bonds to study the sulfonic acid groups on the impact of proton exchange properties. Using solartron electrochemical testing
Zhengping Zhao +4 more
doaj +1 more source
A multi-objective optimisation model for a general polymer electrolyte membrane fuel cell system [PDF]
, 2010 This paper presents an optimisation model for a general polymer electrolyte membrane (PEM) fuel cell system Suitable for efficiency and size trade-offs investigation.
Ang, SMC, Brett, DJL, Fraga, ES
core