Highlights 

  • NMG advances graphite–polymer composites for fuel-cell bipolar plates and EMI shielding. 
  • Tests validate high crystallinity, thermal stability above 400°C, and electrical conductivity up to 25 S/cm. 
  • EMI shielding trials achieved 60–70 dB below 2 GHz, meeting telecom and automotive standards. 
  • Research collaborations with top Canadian universities support multifunctional composite development. 
  • NMG plans to leverage future Matawinie Mine production to supply scalable, sustainable advanced materials. 

Nouveau Monde Graphite Inc. (TSX:NOU), a leader in advanced graphite materials, has unveiled new progress in developing next-generation graphite–polymer composites designed for emerging energy and high-technology markets. Working with leading Canadian researchers, NMG has expanded the application potential of its graphite materials from fuel-cell systems into electromagnetic interference shielding solutions used in telecom, automotive, and defense sectors. 

The company’s latest results stem from collaborative work with Professors Frej Mighri, Said Elkoun, and Samaneh Shahgaldi, who specialize in advanced materials research. The studies confirm that NMG’s natural graphite, sourced from the upcoming Phase-2 Matawinie Mine, offers versatility beyond its traditional role in battery materials. These findings position NMG to broaden its portfolio into high-value composite applications that benefit from graphite’s balance of conductivity, thermal stability, and structural performance. 

Fuel-Cell and EMI Shielding Tests Validate High-Performance Characteristics 

Initial research focused on developing graphite–polymer composites for bipolar plates used in hydrogen fuel cells. These plates require a combination of electrical conductivity, chemical stability, and mechanical resilience to support long-term durability within fuel-cell systems. NMG’s materials demonstrated high crystallinity of approximately 80%, thermal stability above 400°C, and controlled thermal expansion—ensuring consistent behavior under demanding conditions. 

Mechanical and electrical tests recorded tensile strength near 40 MPa and electrical conductivity reaching 25 S/cm (12 S/cm through-plane). Building on these results, researchers expanded the evaluation to include EMI shielding capabilities. 

Standard ASTM D4935 testing conducted at ISO-9001-certified Novika Solutions facilities showed shielding effectiveness of 60–70 dB below 2 GHz and 55–65 dB across the 1–6 GHz range. These performance levels meet or surpass industry expectations for automotive electronics, telecom equipment, and other sectors requiring lightweight, conductive shielding materials. 

The ability to repurpose a fuel-cell-focused composite family for electromagnetic protection underscores the adaptability of NMG’s graphite platform and its potential to support multiple high-growth industrial domains. 

Toward Scalable, Multifunctional Composites for Advanced Industries 

NMG’s R&D program highlights graphite’s role as a versatile material capable of bridging polymer composites and metallic shielding solutions. Beyond EMI protection, graphite composites offer additional advantages for infrared management, radar absorption, and thermal distribution—key requirements for future intelligent systems deployed in defense, aerospace, and advanced communications. 

As NMG continues refining its composites toward defense-grade thresholds (≥ 80 dB shielding), the company is aligning its marketing strategy with high-value supply chains in Western markets. By integrating large flake graphite from the future Matawinie Mine, NMG aims to deliver scalable, sustainable materials that offer a combination of energy performance, thermal management, and stealth functionality. 

Collaborative research support from NSERC, PRIMA Québec, MITACS, and industry partners further accelerates product development while reinforcing NMG’s commitment to innovation, ESG leadership, and supply-chain traceability. 

Conclusion 

NMG’s continued progress in graphite–polymer composite technologies highlights expanding opportunities across clean energy, telecom, automotive, and defense markets. With validated performance in both fuel-cell applications and EMI shielding, coupled with a growing network of academic and industrial partnerships, NMG is well positioned to commercialize multifunctional graphite-based materials. As the company advances full-scale production from its Matawinie Mine, it aims to serve emerging high-tech sectors with sustainable, high-performance graphite solutions. 

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