Results 291 to 300 of about 269,863 (349)

Advances in ionogels for proton-exchange membranes

Science of The Total Environment
To ensure the long-term performance of proton-exchange membrane fuel cells (PEMFCs), proton-exchange membranes (PEMs) have stringent requirements at high temperatures and humidities, as they may lose proton carriers. This issue poses a serious challenge to maintaining their proton conductivity and mechanical performance throughout their service life ...
Yilin, Zhou, Bei, Wang, Zhiwei, Ling, Qingting, Liu, Xudong, Fu, Yanhua, Zhang, Rong, Zhang, Shengfei, Hu, Feng, Zhao, Xiao, Li, Xujin, Bao, Jun, Yang   +11 more
openaire   +2 more sources

Anode Engineering for Proton Exchange Membrane Water Electrolyzers

ACS Catalysis
: Sustainable hydrogen (H 2 ) production via water electrolysis is one of the most critical pathways to decarbonize the chemical industry. Among various electrolyzer technologies, proton exchange membrane (PEM) water electrolyzer (PEMWE) is widely ...
Chang Qiu, Zikai Xu, Feng-Yang Chen, Haotian Wang   +3 more
semanticscholar   +1 more source

Mechanical degradation of proton exchange membrane along the MEA frame in proton exchange membrane fuel cells

Energy, 2018
Abstract Mechanical degradation, caused by local stress concentration and variation, significantly affects the lifetime of proton exchange membrane fuel cells. This study constitutes the first numerical investigation of stress evolution in the membrane between the frame of the membrane exchange assembly (MEA) and gas diffusion layer (GDL) throughout ...
Diankai Qiu, Linfa Peng, Peng Liang, Peiyun Yi, Xinmin Lai   +4 more
openaire   +1 more source

A Review of Fluorinated Proton Exchange Membrane

Advanced Materials Research, 2014
The proton exchange membrane (PEM) plays a key role on performance of PEM fuel cell. This paper reviewed recent developments of perfluorinated and partially fluorinated PEMs for PEM fuel cells.Comparative analysis of various PEM parameters was presented.
Shi Zhong Chen, Shi Yu Xing
openaire   +1 more source

Degradation mechanisms of proton exchange membrane fuel cell under typical automotive operating conditions

, 2020
The proton exchange membrane (PEM) fuel cell is an ideal automotive power source with great potential, owing to its high efficiency and zero emissions. However, the durability and life-span limit its large-scale application.
Ren Peng, P. Pei, Yuehua Li, Wu Ziyao, Dongfang Chen, Shangwei Huang   +5 more
semanticscholar   +1 more source

Proton Exchange Membranes

2009
Operation and Alternative Proton Conductors 166 3.4 Future Directions 170 References 171Proton exchange membranes (PEMs) are a key component in PEM fuel cells (PEMFCs) and an area of active research in commercial, government, and academic institutions. In this chapter, the review of PEM materials is divided into two sections.
openaire   +1 more source

High temperature proton exchange membrane fuel cells: progress in advanced materials and key technologies.

Chemical Society Reviews, 2020
High temperature proton exchange membrane fuel cells (HT-PEMFCs) are one type of promising energy device with the advantages of fast reaction kinetics (high energy efficiency), high tolerance to fuel/air impurities, simple plate design, and better heat ...
Rizwan Haider, Yichan Wen, Zifeng Ma, D. Wilkinson, Lei Zhang, Xianxia Yuan, Shuqin Song, Jiujun Zhang   +7 more
semanticscholar   +1 more source

States of Water in Proton Exchange Membranes

ECS Meeting Abstracts, 2008
Abstract not Available.
Abhishek Roy, Hae-Seung Lee, Mou Paul, Anand S. Badami, Judy S. Riffle, James McGrath   +5 more
openaire   +1 more source

Proton Exchange Membrane Electrochemical Capacitors

Proceedings of the 25th Intersociety Energy Conversion Engineering Conference, 2005
Disclosed is a high-energy-density all-solid ionomer electrochemical capacitor, completely free of liquid electrolyte. The capacitor includes 1) a three-dimensional metal oxide-particulate-ionomer composite electrode structure, whereby the ionomer coats the individual particles and provides a mechanism for continuous proton transport throughout the ...
S. Sarangapani, P. Lessner, J. Forchione, A. Griffith, A.B. LaConti   +4 more
openaire   +1 more source

Review on current research of materials, fabrication and application for bipolar plate in proton exchange membrane fuel cell

, 2020
Bipolar plate (BP) in proton exchange membrane (PEM) fuel cells provides conducting paths for electrons between cells, distributes and blocks the reactant gases, removes waste heat, and provides stack structural integrity. It is a key component to ensure
Yuxi Song, Caizhi Z. Zhang, C. Ling, M. Han, Rui Yong, Deen Sun, Jinrui Chen   +6 more
semanticscholar   +1 more source