Improved performance of poly(vinyl pyrrolidone)/phosphonated poly(2,6-dimethyl-1,4-phenylene oxide)/graphitic carbon nitride nanocomposite membranes for high temperature proton exchange membrane fuel cells

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106237-106247 ◽  
Author(s):  
Gongwen Zou ◽  
Wei Wu ◽  
Chuanbo Cong ◽  
Xiaoyu Meng ◽  
Kun Zhao ◽  
...  

To achieve desirable performance of a polymer electrolyte membrane with higher proton conduction and better mechanical strength is a challenging work in the development of the phosphoric acid (PA) doped solid-state membrane.

2018 ◽  
Vol 7 (3.27) ◽  
pp. 80
Author(s):  
G Sheebha Jyothi ◽  
Y Bhaskar Rao

This paper represents a mathematical model for proton exchange membrane fuel cell(PEMFC)system. Proton exchange membrane fuel cell (also called polymer Electrolyte Membrane fuel cells(PEM)) provides a continuous electrical energy supply from fuel at high levels of efficiency and power density. PEMs provide a solid, corrosion free electrolyte, a low running temperature, and fast response to power.  


2015 ◽  
Vol 6 (3) ◽  
pp. 2050-2053 ◽  
Author(s):  
P. D. Tran ◽  
A. Morozan ◽  
S. Archambault ◽  
J. Heidkamp ◽  
P. Chenevier ◽  
...  

Bio-inspired chemistry allowed for the development of the first noble metal-free polymer electrolyte membrane hydrogen fuel cell (PEMFC). The device proved operational under technologically relevant conditions.


2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Óscar González-Espasandín ◽  
Teresa J. Leo ◽  
Emilio Navarro-Arévalo

The possibility of implementing fuel cell technology in Unmanned Aerial Vehicle (UAV) propulsion systems is considered. Potential advantages of the Proton Exchange Membrane or Polymer Electrolyte Membrane (PEMFC) and Direct Methanol Fuel Cells (DMFC), their fuels (hydrogen and methanol), and their storage systems are revised from technical and environmental standpoints. Some operating commercial applications are described. Main constraints for these kinds of fuel cells are analyzed in order to elucidate the viability of future developments. Since the low power density is the main problem of fuel cells, hybridization with electric batteries, necessary in most cases, is also explored.


Author(s):  
Katharina Wagner ◽  
Karl Heinz Hoffmann

AbstractFuel cells are known for high efficiencies in converting chemical energy into electrical energy. Nonetheless, the processes taking place in a fuel cell still possess a number of irreversibilities that limit the power output to values below the reversible limit. To analyze these, we developed a model that captures the main irreversibilities occurring inside a proton exchange membrane or polymer electrolyte membrane fuel cell. We used the methods of endoreversible thermodynamics, which enable us to study the entropy production of the different sources of irreversibility in detail. Additionally, performance measures like efficiency and power output can be calculated with such a model, and the influence of different parameters, such as temperature and pressure, can be easily investigated. The comparison of the model predictions with realistic fuel cell data shows that the functional dependencies of the fuel cell characteristics can be captured quite well.


Author(s):  
S H Han ◽  
K R Kim ◽  
D K Ahn ◽  
Y D Choi

This study investigates the effects of stoichiometry, humidity, cell temperature, and pressure on the performance and the flooding of the proton exchange membrane fuel cell. Values of stoichiometry are 1.5, 2.0, and 2.5 at cell temperatures of 50, 55, and 60 °C, respectively. This study shows that the dimensionless flooding value (FV) is a function of the stoichiometry, humidity, temperature, and pressure. The FV is calculated by using the measured values of temperature, humidity, pressure, and flowrate of the cathode. The effect of the dimensionless number on the flooding of the cathode in the proton exchange membrane fuel cell is analysed in this study. The effects of air stoichiometry, cell temperature, and air humidity are also discussed in this article.


2019 ◽  
Vol 43 (41) ◽  
pp. 16232-16245 ◽  
Author(s):  
Parisa Hosseinabadi ◽  
Khadijeh Hooshyari ◽  
Mehran Javanbakht ◽  
Morteza Enhessari

The addition of BaZr0.9Y0.1O3−δ (BZY10) nanoparticles as a perovskite material with a proton conductor oxide structure to enhance the performance of sulfonated poly(ether ether ketone) (SPEEK) in proton exchange membrane fuel cells (PEMFCs) has been investigated in this work.


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