Results 51 to 60 of about 126,687 (209)

Improved Electrodes for High Temperature Proton Exchange Membrane Fuel Cells using Carbon Nanospheres [PDF]

ChemSusChem, 2016
AbstractThis work evaluates the use of carbon nanospheres (CNS) in microporous layers (MPL) of high temperature proton exchange membrane fuel cell (HT‐PEMFC) electrodes and compares the characteristics and performance with those obtained using conventional MPL based on carbon black.
Héctor Zamora, Jorge Plaza, Pablo Cañizares, Justo Lobato, Manuel A. Rodrigo   +4 more
openaire   +5 more sources

Metal Organic Frameworks Modified Proton Exchange Membranes for Fuel Cells

Frontiers in Chemistry, 2020
Proton exchange membrane fuel cells (PEMFCs) have received considerable interest due to their low operating temperature and high energy conversion rate. However, their practical implement suffers from significant performance challenge.
Quanyi Liu, Zekun Li, Donghui Wang, Zhifa Li, Xiaoliang Peng, Chuanbang Liu, Penglun Zheng   +6 more
doaj   +1 more source

Proton Conductivity Enhancement at High Temperature on Polybenzimidazole Membrane Electrolyte with Acid-Functionalized Graphene Oxide Fillers

Membranes, 2022
Graphene oxide (GO) and its acid-functionalized form are known to be effective in enhancing the proton transport properties of phosphoric-acid doped polybenzimidazole (PA-doped PBI) membranes utilized in high-temperature proton exchange membrane fuel ...
Raja Rafidah Raja Sulaiman, Rashmi Walvekar, Wai Yin Wong, Mohammad Khalid, Ming Meng Pang   +4 more
doaj   +1 more source

Three-dimensional simulation of a new cooling strategy for proton exchange membrane fuel cell stack using a non-isothermal multiphase model [PDF]

, 2019
In this study, a new cooling strategy for a proton exchange membrane (PEM) fuel cell stack is investigated using a three-dimensional (3D) multiphase non-isothermal model.
Jiao, K, Wang, Y, Yuan, H, Zhang, G
core  

In situ investigation of dissociation and migration phenomena at the Pt/electrolyte interface of an electrochemical cell [PDF]

, 2015
The development of efficient energy conversion systems requires precise engineering of electrochemical interfaces and thus asks for in situ techniques to probe the structure and the composition of the dynamic electrode/electrolyte interfacial region ...
Ariza, Arrigo, Axnanda, Casalongue, Casalongue, Costa, Diawara, Doh, Hansen, He, Kamat, Kamat, Kerber, Knop-Gericke, Kresse, Kresse, Kresse, Ladas, Munson, Oono, Papaefthimiou, Papakonstantinou, Perdew, Perdew, Puziy, Rotole, Rotole, Salmeron, Sanchez-Casalongue, Shchukarev, Stuve, Tao, Tao, Teschner, Valov, Weber, Wibowo, Yeh, Zelenay, Zhang, Zhang   +40 more
core   +2 more sources

Simultaneously Promoting Proton Conductivity and Mechanical Stability of SPEEK Membrane by Incorporating Porous g–C₃N₄

Membranes
Proton exchange membranes are widely used in environmentally friendly applications such as fuel cells and electrochemical hydrogen compression. In these applications, an ideal proton exchange membrane should have both excellent proton conductivity and ...
Xiaoyao Wang, Benbing Shi
doaj   +1 more source

Effect of environmental condition on essential work of fracture of proton exchange membranes

Mechanical Engineering Journal, 2015
The essential work of fracture (EWF) is a key property in understanding the fracture resistance in polymer membranes. As such, it is a promising approach when investigating the fracture resistance of proton exchange membrane in fuel cells.
Thibaud VERMOT DES ROCHES, Yuki ARAI, Masaki OMIYA   +2 more
doaj   +1 more source

Low Pt loading for high-performance fuel cell electrodes enabled by hydrogen-bonding microporous polymer binders

Nature Communications, 2022
Lowering the Pt loading while maintaining high fuel-cell performance is an important but difficult task. Here the authors report modified polymers with intrinsic microporosity as binder for preferential retention of phosphoric acid in the catalyst layer,
Hongying Tang, Kang Geng, David Aili, Qing Ju, Ji Pan, Ge Chao, Xi Yin, Xiang Guo, Qingfeng Li, Nanwen Li   +9 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  

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