Results 81 to 90 of about 179,969 (212)

Styrene and Its Derivatives Used in Proton Exchange Membranes and Anion Exchange Membranes for Fuel Cell Applications: A Review

Batteries
The proton exchange membrane (PEM) is a critical component of fuel cells, responsible for controlling the flow of protons while minimizing fuel crossover through its channels.
Muhammad Rehman Asghar, Ayesha Zahid, Huaneng Su, Kumar Divya, Muhammad Tuoqeer Anwar, Qian Xu   +5 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, John, Scott, Kim, Brian, Olcese, Riccardo, Ottolia, Michela   +4 more
core   +1 more source

Recent Developments in Mems-Based Micro Fuel Cells [PDF]

, 2006
Micro fuel cells ($\mu$-FC) represent promising power sources for portable applications. Today, one of the technological ways to make $\mu$-FC is to have recourse to standard microfabrication techniques used in the fabrication of micro electromechanical ...
Gauthier-Manuel, B., Pichonat, T.
core   +4 more sources

Modeling and simulations of deformation and transport in PEM fuel cells [PDF]

, 2008
Performance degradation and durability of PEM fuel cells depend strongly upon transport and deformation characteristics of their components especially the polymer membrane.
Yesilyurt, Serhat, Yeşilyurt, Serhat
core   +1 more source

Interplay between Swelling Kinetics and Nanostructure in Perfluorosulfonic Acid Thin-Films: Role of Hygrothermal Aging [PDF]

, 2019
Impacts of processing, storage, and operation on thin-film perfluorosulfonic acid (PFSA) ionomer coatings used in electrodes of electrochemical devices remains unestablished.
Kushner, DI, Kusoglu, A, Tesfaye, M
core   +2 more sources

The conduction pathway of potassium channels is water free under physiological conditions. [PDF]

, 2019
Ion conduction through potassium channels is a fundamental process of life. On the basis of crystallographic data, it was originally proposed that potassium ions and water molecules are transported through the selectivity filter in an alternating ...
Chevelkov, V., de Groot, B., Hendriks, K., Kopec, W., Lange, A., Lange, S., Michl, D., Shi, C., Sun, H., Öster, C.   +9 more
core   +1 more source

Development and characterization of sulfonated polysulfone membrane for proton exchange membrane fuel cell (PEMFC) [PDF]

, 2004
Sulfonated polysulfone membranes with varying degree of sulfonation have been successfully synthesized by electrophilic substitution via sulfonation process in this study.
Naim, Rosmawati
core  

Transparent proton transport through a two-dimensional nanomesh material

Nature Communications, 2019
Molecular sieving is important for proton exchange fuel cells, water desalination and gas separation, but achieving optimal proton conductivity and selectivity is difficult.
Jiyu Xu, Hongyu Jiang, Yutian Shen, Xin-Zheng Li, E. G. Wang, Sheng Meng   +5 more
doaj   +1 more source

Revealing the Oxygen Transport Challenges in Catalyst Layers in Proton Exchange Membrane Fuel Cells and Water Electrolysis

Nano-Micro Letters
Highlights Mechanisms of the bulk and local oxygen transport in cathode catalyst layers (CCLs) in proton exchange membrane fuel cells (PEMFCs) are presented.
Huiyuan Li, Shu Yuan, Jiabin You, Congfan Zhao, Xiaojing Cheng, Liuxuan Luo, Xiaohui Yan, Shuiyun Shen, Junliang Zhang   +8 more
doaj   +1 more source

Design of a Proton Exchange Membrane Electrolyzer

Hydrogen
A novel design of a proton exchange membrane electrolyzer is presented. In contrast to previous designs, the flow field plates are round and oriented horizontally with the feed water entering from a central hole and spreading evenly outward over the ...
Torsten Berning
doaj   +1 more source