Electrochemical reaction and performance of proton exchange membrane fuel cells with a novel cathode flow channel shape

2007 ◽  
Vol 166 (2) ◽  
pp. 362-375 ◽  
Author(s):  
Mu-Sheng Chiang ◽  
Hsin-Sen Chu ◽  
Cha’o-Kuang Chen ◽  
Sheng-Rui Jian
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Electrochemical Reaction ◽  
Flow Channel ◽  
Proton Exchange ◽  
Channel Shape ◽  
And Performance ◽  
Exchange Membrane

Performance of Proton Exchange Membrane Fuel Cells with Honeycomb-like Flow Channel Design

Energy ◽  
2021 ◽  
pp. 122102
Author(s):  
Shuanyang Zhang ◽  
Shun Liu ◽  
Hongtao Xu ◽  
Gaojie Liu ◽  
Ke Wang
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Flow Channel ◽  
Proton Exchange ◽  
Channel Design ◽  
Exchange Membrane

Design Concepts for Directed Exit Flow in Micro Fuel Cells

2004 ◽  
Author(s):  
Wei Shi ◽  
Sang-Joon Lee
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Gas Diffusion ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Design Concepts ◽  
New Concepts ◽  
And Performance ◽  
Electronic Load ◽  
Exchange Membrane

Miniature and micro fuel cells continue to advance as promising alternatives for efficient and portable electric power. This paper presents a study of experimental modifications to the exit flow configuration of microchannels used in small proton-exchange-membrane fuel cells. New concepts for exit geometry are presented, which promote effective water removal and provide reactant back-pressure in an efficient and self-contained manner. Cell assembly is designed such that reactants must necessarily flow laterally through the gas diffusion electrodes near the exit, rather than simply pass over the free backside surfaces of these electrodes. Multiple prototypes were produced using microfabrication techniques with channel sizes of 100 and 200 microns, and performance was tested using a hydrogen-air test station with programmable electronic load. One of the new concepts in particular showed a marked improvement from 28 mW/cm2 peak power density under baseline conditions to 37 mW/cm2 for the modified design under similar operating conditions. The design offers an opportunity for higher performance in miniature fuel cells with low gas consumption and no additional cost.

Numerical investigation of water dynamics in a novel wettability gradient anode flow channel for proton exchange membrane fuel cells

2020 ◽  
Vol 44 (13) ◽  
pp. 10282-10294 ◽  
Author(s):  
Xiaoqing Zhang ◽  
Jiapei Yang ◽  
Xiao Ma ◽  
Wenmiao Chen ◽  
Shijin Shuai ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Numerical Investigation ◽  
Proton Exchange Membrane ◽  
Flow Channel ◽  
Proton Exchange ◽  
Water Dynamics ◽  
Exchange Membrane

scholarly journals Effect of extended short-circuiting in proton exchange membrane fuel cells

2020 ◽  
Vol 4 (11) ◽  
pp. 5739-5746
Author(s):  
Panagiotis Trogadas ◽  
Jason I. S. Cho ◽  
Nidhi Kapil ◽  
Lara Rasha ◽  
Albert Corredera ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Detrimental Effect ◽  
Catalyst Layer ◽  
Proton Exchange ◽  
And Performance ◽  
Exchange Membrane

The detrimental effect of extended short-circuiting in the degradation of catalyst layer and performance of proton exchange membrane fuel cells.

scholarly journals Preparation and performance of electrically conductive Nb-doped TiO2/polyaniline bilayer coating for 316L stainless steel bipolar plates of proton-exchange membrane fuel cells

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19426-19431 ◽  
Author(s):  
Yanli Wang ◽  
Shenghua Zhang ◽  
Zhaoxia Lu ◽  
Ping Wang ◽  
Xiaohong Ji ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
316L Stainless Steel ◽  
Proton Exchange ◽  
Bipolar Plates ◽  
Electrically Conductive ◽  
Bilayer Coating ◽  
And Performance ◽  
Exchange Membrane

A bilayer coating composed of an inner layer of Nb-doped TiO2 and an external polyaniline layer with small SO42− groups was prepared; the bilayer coating could protect 316L more effectively from the penetration of corrosive ions.

Sign in / Sign up

Export Citation Format

Share Document