An Experimental Study on Micro Proton Exchange Membrane Fuel Cell

2012 ◽  
Vol 9 (3) ◽  
Author(s):  
Chiun-Hsun Chen ◽  
Tang-Yuan Chen ◽  
Chih-Wei Cheng ◽  
Rong-Guie Peng
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Current Collector ◽  
Proton Exchange ◽  
Operating Voltage ◽  
Durability Test ◽  
Micro Electro Mechanical Systems ◽  
Mems Technology ◽  
Current Densities ◽  
Exchange Membrane

This study fabricates a micro proton exchange membrane fuel cell (PEMFC) using micro electro mechanical systems (MEMS) technology. The active area of the membrane is 2 cm × 2 cm (4 cm2). The study is divided into two categories: [(1) the parametric experimental investigation, and (2) the durability test. This work is an attempt to find out how several parameters, including reheat temperature, the material of the current collector plates, the open ratio, and different cathode gases affect micro PEFMC performance. According to the experimental results obtained, both the conducting area and the material of the current collector plates exert great influences on the performance of the micro PEMFC, especially in the conducting area. The cell’s performance is finite when the gas reheat temperature is increased. The results show that the cell performance is better for an open ratio of 75% as compared to ratios of 50% and 67%. The concentration polarization is improved by increasing the air flow rate at high current densities, and if the GDL diffusive capability in the latter cell could be promoted, the differences between these two cells’ performances would be reduced. Furthermore, the performance at an operating voltage of 0.6 V was the most stable one among the four cases tested, and the performance deviation at a fixed operating voltage of 0.4 V was less than ±2.2%.

A Novel Approach for Distribution of Reacting Gases With Enhanced Mass Transfer in Fuel Cells

2004 ◽  
Author(s):  
P. W. Li ◽  
S. P. Chen ◽  
M. K. Chyu
Keyword(s):  
Mass Transfer ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Power Output ◽  
Proton Exchange Membrane ◽  
Current Collector ◽  
Proton Exchange ◽  
Novel Approach ◽  
Modeling Analysis ◽  
Exchange Membrane

In order to improve the power output of a fuel cell, a novel approach for gas delivery and mass transfer enhancement in a gas distributor is proposed. A model analyzing the power output against the dimensions of a novel gas delivery channel and current collector is also presented. Experimental study for some proton-exchange-membrane fuel cells and numerical analysis for a planar type solid oxide fuel cell are carried out. Significant improvement of power output was obtained for the newly designed fuel cells compared to conventional ones. Both the experimental results and modeling analysis are of great significance to the design of fuel cells.

scholarly journals Long-term dynamic durability test datasets for single proton exchange membrane fuel cell

Data in Brief ◽  
2021 ◽  
Vol 35 ◽  
pp. 106775
Author(s):  
Jian Zuo ◽  
Hong Lv ◽  
Daming Zhou ◽  
Qiong Xue ◽  
Liming Jin ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Durability Test ◽  
Single Proton ◽  
Exchange Membrane

Design and Development of a Sheet Metal Plastic Backed Proton Exchange Membrane Fuel Cell

2011 ◽  
Vol 8 (5) ◽  
Author(s):  
Shashank Sharma ◽  
Mayank Gupta ◽  
Shaswat Anand ◽  
Naveen Kumar
Keyword(s):  
Fuel Cell ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Current Collector ◽  
Bipolar Plate ◽  
Flow Fields ◽  
Gas Diffusion ◽  
Proton Exchange ◽  
Manufacturing Cost ◽  
Exchange Membrane

The high costs associated with fuel cell manufacturing have precluded its production on a large scale. The major emphasis of the present wok is to bring down the overall cost of an independent fuel cell unit. The manufacturing cost can be reduced using commonly available and corrosion resistant materials into the fuel cell assembly. Bipolar plates usually employed in proton exchange membrane fuel cells are fabricated from conducting graphite. Graphite owing to its conductivity, corrosion resistance and easy machinability, is the preferred material in static systems. However, due to its brittle characteristics and failure under bending loads, graphite is inferior in its mechanical properties as compared to metals and their alloys. Dimensional stability is also compromised due to wear and friction. In the present work, an attempt is made to assemble a fuel cell stack which would have durability and sustainability in dynamic conditions, where the setup would be able to withstand periodic shocks, vibrations, and fatigue loads. Instead of employing graphite as the bipolar plate which serves the dual purpose of a current collector and area for flow fields, graphite foil protected aluminum as the current collector and machined plastic slabs on which the flow fields are carved, have been employed. Both the substitutes are easily available owing to mass production and have a small processing cost associated with them. Further, the technique employed for processing of Nafion and hot pressing of the catalyst loaded gas diffusion layer onto the proton exchange membrane have been elaborated in the present paper along with the systematic approach followed by the research group eliminating various current collector candidates for fuel cell applications. The various stages attained towards the final fabrication of the foil protected lightweight current collector, has also been highlighted in the present work.

Planar current collector design and fabrication for proton exchange membrane fuel cell

2019 ◽  
Vol 44 (20) ◽  
pp. 10071-10081 ◽  
Author(s):  
Yean-Der Kuan ◽  
Jyun-Long Lyu ◽  
Ting-Ru Ke ◽  
Min-Feng Sung ◽  
Jing-Shan Do
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Current Collector ◽  
Proton Exchange ◽  
Exchange Membrane

scholarly journals Persistent Effect Test and Internal Microscopic Monitoring for PEM Water Electrolyzer

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 494
Author(s):  
Chi-Yuan Lee ◽  
Chia-Hung Chen ◽  
Guo-Bin Jung ◽  
Yu-Xiang Zheng ◽  
Yi-Cheng Liu
Keyword(s):  
Proton Exchange Membrane ◽  
High Efficiency ◽  
Low Cost ◽  
Proton Exchange ◽  
Hydrogen Energy ◽  
Micro Electro Mechanical Systems ◽  
Persistent Effect ◽  
Mems Technology ◽  
Exchange Membrane ◽  
Effect Test

As the environmental considerations rise all over the world and under the drive of renewable energy policy, the society of hydrogen energy will come out gradually in the future. The proton exchange membrane water electrolyzer (PEMWE) is a very good hydrogen generator, characterized by low cost, high efficiency and zero emission of greenhouse gases. In this study, the micro temperature, humidity, flow, pressure, voltage, and current sensors were successfully integrated on a 50 μm thick Polyimide (PI) substrate by using micro-electro-mechanical systems (MEMS) technology. After the optimal design and process optimization of the flexible 6-in-1 microsensor, it was embedded in the PEMWE for a 500-h persistent effect test and internal real-time microscopic monitoring.

scholarly journals Flexible 5-in-1 Microsensor Embedded in the Proton Battery for Real-Time Microscopic Diagnosis

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 276
Author(s):  
Chi-Yuan Lee ◽  
Chia-Hung Chen ◽  
John-Shong Cheong ◽  
Yun-Hsiu Chien ◽  
Yi-Chuan Lin
Keyword(s):  
Proton Exchange Membrane ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Battery Life ◽  
Physical Parameters ◽  
Micro Electro Mechanical Systems ◽  
Proton Battery ◽  
Mems Technology ◽  
Microscopic Diagnosis ◽  
Exchange Membrane

The proton battery possesses water electrolysis, proton storage and discharging functions simultaneously, and it can be manufactured without expensive metals. Use the principle of proton exchange membrane water electrolysis for charging, store it in the activated carbon on the hydrogen side and use the principle of proton exchange membrane fuel cell for discharge when needed. According to the latest literature, it is difficult to obtain the exact important physical parameters inside the proton battery (e.g., voltage, current, temperature, humidity and flow), and the important physical parameters are correlated with each other, which have critical influence on the performance, lifetime and health status of the proton battery. At present, the condition of the proton battery is judged indirectly only by external measurement, the actual situation inside the proton battery cannot be obtained accurately and instantly. Therefore, this study uses micro-electro-mechanical systems (MEMS) technology to develop a flexible 5-in-1 microsensor, which is embedded in the proton battery to obtain five important physical parameters instantly, so that the condition inside the proton battery can be mastered more precisely, so as to prolong the battery life and enhance the proton battery performance.

scholarly journals Real-Time Monitoring of HT-PEMFC

Membranes ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 94
Author(s):  
Chi-Yuan Lee ◽  
Fang-Bor Weng ◽  
Chin-Yuan Yang ◽  
Chun-Wei Chiu ◽  
Shubham-Manoj Nawale
Keyword(s):  
High Temperature ◽  
Real Time ◽  
Flow Rate ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Micro Electro Mechanical Systems ◽  
Fuel Distribution ◽  
Mems Technology ◽  
Exchange Membrane

During the electrochemical reaction of a high temperature proton exchange membrane fuel cell (HT-PEMFC), (in this paper HT-PEMFC means operating in the range of 120 to 200 °C) the inhomogeneity of temperature, flow rate, and pressure in the interior is likely to cause the reduction of ion conductivity or thermal stability weight loss of proton exchange membrane materials, and it is additionally likely to cause uneven fuel distribution, thereby affecting the working performance and service life of the HT-PEMFC. This study used micro-electro-mechanical systems (MEMS) technology to develop a flexible three-in-one microsensor which is resistant to high temperature electrochemical environments; we selected appropriate materials and process parameters to protect the microsensor from failure or damage under long-term tests. The proposed method can monitor the local temperature, flow rate, and pressure distribution in HT-PEMFC in real time.

Numerical Analysis of Current Distribution at Proton Exchange Membrane Fuel Cell Compared by Segmented Current Collector Cell

2006 ◽  
Vol 4 (4) ◽  
pp. 441-449 ◽  
Author(s):  
Kazuo Onda ◽  
Takuya Taniuchi ◽  
Takuto Araki ◽  
Daisuke Sunakawa
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Current Density ◽  
Proton Exchange Membrane ◽  
Current Collector ◽  
Proton Exchange ◽  
Dew Point ◽  
Current Distributions ◽  
Concentration Changes ◽  
Exchange Membrane

In order to grasp properly proton exchange membrane fuel cell (PEMFC) power generation performances, it is necessary to know factors for water management such as diffusivity and electro-osmotic coefficient of water vapor through the membrane and factors for power loss such as active and resistive overpotentials. In this study, we have measured these factors to analyze our experimental results of PEMFC power generation tests by using our pseudo-two-dimensional simulation code. It considers simultaneously the mass, charge and energy conservation equations, and the equivalent electric circuit for PEMFC to give numerical distributions of hydrogen/oxygen concentrations, current density, and gas/cell-component temperatures. Various experimental conditions such as fuel and oxygen utilization rates, inlet dew-point temperature, averaged current density, and flow configuration (co- or counterflow) were changed, and all of the numerical distributions of current density agreed well with the measured distributions by segmented current collector. The current distributions were also obtained from hydrogen/oxygen concentration changes along the gas flow measured by gas chromatography. The current distributions measured by the two different methods coincided with each other, showing reliability of our measurement methods.

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