Secondary Battery Technologies

When used as electrode material, ultra-thin MicroGrid® expanded metal foils improve rechargable battery and supercapacitor performance.

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How Expanded Electrode Materials Enhance Advanced Batteries


Expanded metal mesh used in place of the solid foils provides greater surface area per unit weight of metal in the battery. This results in better adhesion of the electrode layers and higher ion transport rate, thus greater energy density capability.

Dexmet has developed machines that can expand aluminum and copper foils down to 25 microns (.001") providing an opportunity for secondary battery developers to utilize expanded products in their battery designs and realize the performance enhancements an open area product can provide. By incorporating MicroGrid materials, battery developers can enhance battery performance:

  • Increase cycle life
  • Decrease internal resistance associated with cycling and age
  • Improve battery capacity


Disruptive Technology for Advanced Battery Development

Disruptive Technology for Advanced Battery Development

Download this valuable guide to using new developments in expanded material for advanced battery applications.


The Advantages of MicroGrid® Series 25

Utilizing an open area product will enhance the performance of the secondary battery cell. Dexmet's MicroGrid® 25 can offer a number of performance advantages over solid foils.

coated expanded mesh

Increased Capacity at Higher C-Rates

The open area of the MicroGrid allows for more active material per thickness of the anode layer.

Reduced Capacity Fade

The porous foil allows lithium ions and electrolyte to completely saturate the multiple layer within a cell

Increased Battery Life

Better chemical bonding to the electrode using an open area product extending battery cycle life

coated open area mesh

Coating Open Area Expanded Mesh

Dexmet is the only expanded metal foil manufacturer in the world with the in-house capability to apply special coatings to the material after it has been expanded. Adding a graphite or other special coating can further improve the adhesion of mesh, lower impedance in the cell, and improve your battery’s performance.

Capacity Performance

Increase in capacity with MicrGrid 25 Series material compared to solid foils

Cycle Testing 1

Learn More About MicroGrid® 25 Expanded Metal

Contact one of our advanced battery experts and discover how open-area materials can improve the design of your secondary battery.