Results 71 to 80 of about 28,491 (215)

Polyvinylidene Fluoride: A Growing Specialty Polymer with Many Facets

Chinese Journal of Chemistry, EarlyView.
Comprehensive Summary Polyvinylidene fluoride (PVDF), the second largest produced fluoropolymer, exhibits outstanding chemical, physical, electroactive and electrochemical properties and is involved in many High‐Tech applications. This review reports recent novelties in synthesis, characterization, processes and applications. Recent preparation studies
Bruno Améduri
wiley   +1 more source

Multi-functional anodes boost the transient power and durability of proton exchange membrane fuel cells. [PDF]

, 2020
Proton exchange membrane fuel cells have been regarded as the most promising candidate for fuel cell vehicles and tools. Their broader adaption, however, has been impeded by cost and lifetime.
Cai, Mei, Jiao, Kui, Lemmon, John P, Li, Hexing, Li, Jinlai, Liu, Fang, Liu, Jing, Liu, Meilin, Lu, Yunfeng, Shen, Gurong, Soloveichik, Grigorii, Tongsh, Chasen, Wu, Hao Bin, Xu, Pengcheng, Zhu, Jian   +14 more
core  

Utilization of multiple graphene layers in fuel cells. 1. An improved technique for the exfoliation of graphene-based nanosheets from graphite [PDF]

, 2010
An improved, safer and mild method was proposed for the exfoliation of graphene like sheets from graphite to be used in fuel cells. The major aim in the proposed method is to reduce the number of layers in the graphite material and to produce large ...
Okyay, Firuze, Saner, Burcu, Yurum, Yuda, Yürüm, Yuda   +3 more
core   +1 more source

Recent advances in boosting interfacial bubble dynamics with external fields

Droplet, EarlyView.
External physical fields, including acoustic, magnetic, thermal, mechanical, and optical stimuli, accelerate the entire bubble‐dynamics sequence of nucleation, growth, and detachment. Abstract The efficiency of industrial electrocatalytic reactions depends not only on generating gaseous products but also on their detachment from the catalyst surface ...
Wenlu Xie, Yanwei Zhang, Yi Liu, Yiming Wei, Jing‐Li Luo, Chenyu Xu   +5 more
wiley   +1 more source

Two-phase flow and oxygen transport in the perforated gas diffusion layer of proton exchange membrane fuel cell [PDF]

, 2019
Liquid water transport in perforated gas diffusion layers (GDLs)is numerically investigated using a three-dimensional (3D)two-phase volume of fluid (VOF)model and a stochastic reconstruction model of GDL microstructures.
Bao, Z, Jiao, K, Niu, Z, Wang, Y, Wu, J, Yin, Y   +5 more
core  

Ordered Nanostructural Engineering of Cathode Catalyst Layer With High Mass Transport Efficiency for High‐Performance Ultra‐Low Pt Loading Proton Exchange Membrane Fuel Cells

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An ordered cathode catalyst layer with efficient mass transport capability was developed based on the ALD of Pt onto VACNTs for high‐performance ultra‐low Pt loading PEMFC. The order‐structured cathode catalyst layer (CCL) has been considered the most promising solution to construct low‐cost proton exchange membrane fuel cells (PEMFCs) with an ultra ...
Jia Liu, Chao Hao, Mingjie Lin, Bin Yang, Qinghao Meng, Bowen Yan, Yulu Xie, Pei Kang Shen, Zhi Qun Tian   +8 more
wiley   +1 more source

Morphology of supported polymer electrolyte ultra-thin films: a numerical study

, 2015
Morphology of polymer electrolytes membranes (PEM), e.g., Nafion, inside PEM fuel cell catalyst layers has significant impact on the electrochemical activity and transport phenomena that determine cell performance.
Abraham F. F., Alejandro A. Franco, Allahyarov E., Allahyarov E., Balbuena P., Bass M., Bass M., Berendsen H. J. C., Biesheuvel P. M., Borup R., Castrillón S. R.-V., Chen W., Cheng C., Choi P., Cui S., Cui S., Daiane Damasceno Borges, Damasceno Borges D., Damasceno Borges D., Damjanovic A., de Morais R. F., Dura J. A., Eastman S. A., Eikerling M., Eikerling M. H., Elliott J. A., Elliott J. A., Franco A. A., Franco A. A., Freger V., Gasteiger H. A., Gebel G., Gebel G., Gerard Gebel, Gierke T. D., Giovambattista N., Glebov A., Hsu W. Y., Huang J., Koestner R., Kourosh Malek, Krapf D., Kreuer K. D., Kusaka I., Kusoglu A., Lamas E., Lee S. H., Li A., Li A., Litster S., Liu J., Liu J., Ma S., Malek K., Malek K., Markovic N. M., Mashio T., Masuda T., Mauritz K. A., Mehta V., Modestino M. A., Modestino M. A., More K., Nagao Y., Nijmeijer M. J. P., Paul D. K., Paul D. K., Paul D. K., Peighambardoust S. J., Quiroga M., Rinaldo S. G., Rubatat L., Scheidler P., Schmidt-Rohr K., Selvan M. E., Selvan M. E., Shi B., Spohr E., Spohr E., Stamenkovic V. R., Stefano Mossa, Subbaraman R., Subbaraman R., Tatarkhanov M., Urata S., Venkatnathan A., Vielstich W., Vishnyakov A., Vishnyakov A., Wang L., Wang Z. B., Weber A. Z., Werder T., Werder T., Wilson M., Wilson M. S., Wood D. L., Xie J., Yeager H. L., Young S. K., Zhdanov V. P., Zhdanov V. p., Zhdanov V. P.   +102 more
core   +5 more sources

Dual‐Functional Sulfonated Nanocellulose for Proton Exchange Membranes With High Proton Conductivity at Low Humidity

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A scalable dual‐functional strategy yields simultaneously sulfonated and nanosized cellulose for proton exchange membranes with continuous hydrogen‐bond networks. These sustainable membranes exhibit low‐humidity proton conductivity twofold higher than Nafion 212, providing a robust solution for next‐generation fuel cells.
Nan Li, Sufeng Zhang, Yali Liu, Jinrui Li, Ning Wei, Chaoyang Li, Tanyanyu Wang   +6 more
wiley   +1 more source

A Comparison of Fick and Maxwell-Stefan Diffusion Formulations in PEMFC Cathode Gas Diffusion Layers [PDF]

, 2013
This paper explores the mathematical formulations of Fick and Maxwell-Stefan diffusion in the context of polymer electrolyte membrane fuel cell cathode gas diffusion layers.
Lindstrom, Michael, Wetton, Brian
core  

Reduced complexity models for water management and anode purge scheduling in DEA operation of PEMFCs [PDF]

, 2010
In this work, the dynamic behavior of Fuel Cell operation under Dead-Ended Anode conditions is shown. A DEA can be fed with dry hydrogen, since water crossing through the membrane is sufficient to humidify the fuel.
Siegel, Jason B., Stefanopoulou, Anna G., Yesilyurt, Serhat, Yeşilyurt, Serhat   +3 more
core   +1 more source