Molded Graphite Laminates (MGL)

AvCarb’s Molded Graphite Laminates (MGL) are uniformly molded rigid graphite sheets that offer superior performance in harsh electrochemical environments found in electrolyzers and fuel cell systems. Our MGLs have high mechanical strength that is ideal for high pressure operation or spanning wide channels, excellent corrosion resistance to handle harsh operating environments, high thermal and electrical conductivity for high operational efficiency, and are lightweight making them ideal for portable electrochemical systems. The uniform pore structure and thickness of our MGL panels provide consistent compression accounting for differences in thickness tolerances on other system parts, such as bipolar plates or other electrodes, thereby enabling high process yields providing a cost-effective solution for many systems.

MGL Advantages over other carbon papers:

  • Lower Electrical Resistivity
  • Higher Flexural Strength
  • Improved Thickness Uniformity
  • Higher purity / Improved Durability
  • Product made in the USA

Why AvCarb MGL for Electrolyzers:

  • Carbon paper is compliant to handle stack component tolerances
  • Carbon paper is much lower cost than Ti on the cathode side (3-10x less)
  • Carbon is resilient in harsh conditions, does not need coatings for durability
  • Eliminates the need for a flow field in a PEM electrolyzer system
  • Enables high pressure operation
TYPICAL PROPERTY AvCarb® MGL 190 AvCarb® MGL 280 AvCarb® MGL 370 AvCarb® MGL 1000 AvCarb® MGL 1500 AvCarb® MGL 2000 AvCarb® MGL 2400
Nominal Thickness (μm) 195 285 375 1000 1500 2000 2400
Compressed Thickness (μm) @ 1 MPa 165 245 320 935 1400 1900 2250
@ 3 MPa 110 160 210 800 1200 1600 1900
Bulk Density (g/cm3) 0.45 0.43 0.43 0.71 0.68 0.69 0.72
Gas Permeability (Gurley-sec) 1.0 1.3 1.4 1.4 1.7 1.8 2.0
TP Resistivity (mΩ-cm2) @ 1 MPa 6.0 6.6 7.8 13.2 13.8 14.1 14.5
@ 3 MPa 3.1 3.4 4.6 10.5 10.7 11.0 11.1
Porosity (%) 78 79 78 69 71 70 68
MGL table 1

Dedicated Manufacturing Facility

AvCarb unveils its cutting-edge manufacturing facility, a major step in driving the hydrogen economy forward! With an electrode manufacturing capacity adequate to support over 10 GW of hydrogen generation for the rapidly growing electrolyzer market, our 105,000 sq. ft. facility is the ultimate game-changer in North America. The facility also gives us the freedom to expand further as the market demands, thanks to the additional space. The plant also boasts multiple development furnaces to continue igniting our innovation of new products, ensuring that we deliver industry-leading, high-quality products that outperform the competition.

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