Development of Fuel Cell Stack Durability based on Actual Vehicle Test Data: Current Status and Future Work

2009 ◽  
Vol 2 (1) ◽  
pp. 960-970 ◽  
Author(s):  
Ryoichi Shimoi ◽  
Takashi Aoyama ◽  
Akihiro Iiyama
Keyword(s):  
Fuel Cell ◽  
Test Data ◽  
Current Status ◽  
Fuel Cell Stack ◽  
Vehicle Test ◽  
Future Work

Lightweight PEM Fuel Cell Stack for Unmanned Aerial Vehicle

2021 ◽  
Author(s):  
Jinmyun Jo ◽  
Xiaoyu Zhang ◽  
Ali Ansari
Keyword(s):  
Fuel Cell ◽  
Internal Combustion Engines ◽  
High Efficiency ◽  
Polymer Electrolyte Membrane ◽  
Test System ◽  
Maximum Power ◽  
Bipolar Plates ◽  
Fuel Cell Stack ◽  
Electrolyte Membrane ◽  
Future Work

Abstract Fuel cell is an electrochemical device that converts fuel into electricity. Polymer electrolyte membrane fuel cells (PEMFCs) have been used for ground transportation due to its high efficiency and zero carbon emission. When it comes to unmanned aerial vehicles (UAVs), PEMFCs can support much longer flight endurance than internal combustion engines and batteries do. However, a lightweight PEMFC stack is required in order to carry enough payload for UAVs. In this research, a lightweight fuel cell stack was developed and fabricated based on the Horizon fuel cell stack. The stack components, including end plates, bipolar plates, and interconnects were redesigned and fabricated to replace those heavy components. Additive manufacturing (3D printing) and electroplating were used to fabricate bipolar plates and interconnects, whereas the end plates were machined from Garolite XX plates. The fabricated lightweight PEMFC stacks were tested using a Scribner 850e Fuel Cell Test System. The lightweight stack assembled with six electroplated bipolar plates showed that the maximum power density estimated was 3.514 W/cm2 with 4.5 V and 1.6 A/cm2 conditions for 100 ml/min of H2. The same fuel cell stack tested at 200 ml/min and 300 ml/min showed higher maximum power densities than 100 ml/min. The presentation includes design and fabrication, performance characterization, weight reduction strategy, and future work.

The Fault Analysis and Diagnosis of Proton Exchange Membrane Fuel Cell Stack

2011 ◽  
Vol 197-198 ◽  
pp. 705-710 ◽  
Author(s):  
Zhen Lin ◽  
Chang Hui Wang ◽  
Yu Liu
Keyword(s):  
Fuel Cell ◽  
Test Data ◽  
Proton Exchange Membrane ◽  
Working Condition ◽  
Single Cells ◽  
High Load ◽  
Fault Analysis ◽  
Proton Exchange ◽  
Fuel Cell Stack ◽  
Exchange Membrane

In order to find the reason of the weak performance of a H2/O2 proton exchange membrane fuel cell (PEMFC) stack, a series of fault analysis and diagnosis tests were conducted. According to the test data, the problematic points were focused, and the fault types of the specific single cells were analyzed. It is found that a minimum of three groups of diagnosis tests based on three relatively high load resistances and a voltmeter could judge the working condition of the PEMFC stack and confirm the fault types of its single cells. The method is useful for quick detecting and handling of PEMFC stack in Industrial field and home usage.

Three-Dimensional Simulation of Planar Solid Oxide Fuel Cell Stack

2008 ◽  
Vol 128 (2) ◽  
pp. 459-466 ◽  
Author(s):  
Yoshitaka Inui ◽  
Tadashi Tanaka ◽  
Tomoyoshi Kanno
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Three Dimensional ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Fuel Cell Stack ◽  
Dimensional Simulation

Bond graph model of a PEM fuel cell stack

2008 ◽  
Vol 1 (06) ◽  
pp. 329-334
Author(s):  
S. Rabih ◽  
C. Turpin ◽  
S. Astier
Keyword(s):  
Fuel Cell ◽  
Graph Model ◽  
Pem Fuel Cell ◽  
Bond Graph ◽  
Fuel Cell Stack

scholarly journals Development of an Understanding of Reactive Mercury in Ambient Air: A Review

Atmosphere ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 73
Author(s):  
Mae Sexauer Gustin ◽  
Sarrah M. Dunham-Cheatham ◽  
Jiaoyan Huang ◽  
Steve Lindberg ◽  
Seth N. Lyman
Keyword(s):  
Ambient Air ◽  
Automated System ◽  
Current Status ◽  
Measurement Systems ◽  
Power Plant Emissions ◽  
History Of ◽  
Plant Emissions ◽  
Gas Measurements ◽  
Future Work ◽  
Stack Gas

This review focuses on providing the history of measurement efforts to quantify and characterize the compounds of reactive mercury (RM), and the current status of measurement methods and knowledge. RM collectively represents gaseous oxidized mercury (GOM) and that bound to particles. The presence of RM was first recognized through measurement of coal-fired power plant emissions. Once discovered, researchers focused on developing methods for measuring RM in ambient air. First, tubular KCl-coated denuders were used for stack gas measurements, followed by mist chambers and annular denuders for ambient air measurements. For ~15 years, thermal desorption of an annular KCl denuder in the Tekran® speciation system was thought to be the gold standard for ambient GOM measurements. Research over the past ~10 years has shown that the KCl denuder does not collect GOM compounds with equal efficiency, and there are interferences with collection. Using a membrane-based system and an automated system—the Detector for Oxidized mercury System (DOHGS)—concentrations measured with the KCl denuder in the Tekran speciation system underestimate GOM concentrations by 1.3 to 13 times. Using nylon membranes it has been demonstrated that GOM/RM chemistry varies across space and time, and that this depends on the oxidant chemistry of the air. Future work should focus on development of better surfaces for collecting GOM/RM compounds, analytical methods to characterize GOM/RM chemistry, and high-resolution, calibrated measurement systems.

scholarly journals Impact of the temperature on calendar aging of an open cathode fuel cell stack

2021 ◽  
Vol 488 ◽  
pp. 229436
Author(s):  
E. Pahon ◽  
S. Jemei ◽  
J.-P. Chabriat ◽  
D. Hissel
Keyword(s):  
Fuel Cell ◽  
Fuel Cell Stack
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