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Dr. Xia Wang Assistant Professor Department of Mechanical Engineering

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Contact Information:. Dr. Xia Wang Assistant Professor Department of Mechanical Engineering Tel: 248-370-2224 Fax: 248-370-4416 Email: wang@oakland.edu. Fuel Cell Research at OU. Dr. Xia Wang. Research Resources. Personnel

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slide1

Contact Information:

Dr. Xia Wang

Assistant Professor

Department of Mechanical Engineering

Tel: 248-370-2224 Fax: 248-370-4416

Email: wang@oakland.edu

research resources
Research Resources
  • Personnel
    • Thermal and Fluid Transport, thermodynamics: Dr. Brian P. Sangeorzan, Dr. Xia Wang, 1 PhD. Student, Undergraduates
    • System control: Dr. Mohamed A. Zohdy, Dr. Zissimos P. Mourelatos, 1 Ph.D student
    • Material (bipolar): Dr. Ismat A. Abu-Isa, Dr. Xia Wang, Dr. Brian P. Sangeorzan
  • Facilities
    • PIV: measure the flow in the bipolar channel
    • Twin screw extruder
    • Injection molding machine
    • Computer & FEMLAB software
research topics
Research Topics
  • Interest: PEMFC( Proton Electrolyte Membrane Fuel Cell)
  • Three Levels of Research:
    • Single cell: (electrode + membrane + cathode)
    • Fuel cell Stack (Bipolar plate + cells)
    • Fuel cell system (Stack + accessories)
single cell research topics
Single Cell-Research Topics
  • Transport Phenomena in the GDL
    • Experimental: Image for the thinner layer
    • Modeling: two phase flow with various porosity
  • Membrane: Prevention of Dehumidification
  • Cathode Side:
    • Water management: flooding
    • Thermal management: cooling the cell, and start-up time
fuel cell stack
Fuel Cell Stack
  • Bipolar Plates
    • New materials: reduce the cost and weight, increase the durability
    • Seals
    • Flow in the bipolar Channel
      • Measurements
      • Simulation
  • Cooling and water management
fuel cell system
Fuel Cell System

Selected from mathworks/ARC workshops: fuel cell systems and modeling

research topics1
Research topics
  • Accurate Control model:
    • based on a better understanding of fuel cell itself
    • new sensor
  • Accessory equipment development
    • Low cost air management system (both for the PEMFC and automotive)
    • Characterize the supply system for the fuel cell
collaborators
Collaborators
  • University:
    • Mississippi State University: GDL
    • University of Michigan: control
    • Kettering University
  • Industry:
    • DTE Tech
    • Ovonic Fuel Cell
    • Daimler Chrysler
plans
Plans

New material and Design for

the Bipolar plate

Reduce Fuel Cells stacks

weight

Flow transport on the surface

of bipolar plate

Fuel cells system control +FCV

Department of Electronic

Engineering, OU

Daimler Chrysler

PEM Fuel Cell

Parametric Study

(Thermal and Fluid Transport)

Water management

Thermal management

Thermal Regeneration

a new bipolar plate
A new Bipolar Plate

Desired Property

  • Good electrical conductivity
  • Good thermal conductivity
  • Low fluid permeation
  • Corrosion resistance in PEM environment
  • Light weight
  • Low cost
approach
Approach
  • Using elastomer+graphite Advantages for composites for polar plates
  • Advantages:
    • improving flexibility and impact strength
    • Improving sealing between plates. Might eliminate need for a rubber seal between polar plates
    • Improve handling & cell assembly
experimental approach
Experimental Approach
  • Select elastomer with proven heat resistance and durability in PEM environment
  • Select different types of conducted graphite including platelets, fiber & woven fiber.
  • Use extrusion or other blending methods to form composite
  • Use compression molding or injection molding to make plaques to be used for further investigations.
  • Determine effects of elastomer type, graphite type and concentration on:
    • Original mechanical & electrical properties
    • Properties after heat aging
    • Properties after fluid aging
  • Choose promising candidates for further investigation:
    • Processing conditions for making polar plates
    • Performance in PEM cell structures
    • Optimization of polar plate design