The Anode Is the Key: How Ferroglobe, Wacker Chemie and HPQ Silicon Aim to Break China's Market Dominance

Ferroglobe Scores with Nano-Coated Metallurgical Silicon

Ferroglobe offers a lot to help Western industry break free from its dependence on China. The company relies on its own production facilities and smelters in North America and Europe. Instead of using the expensive chemical vapor deposition process, Ferroglobe purifies commercially available silicon entirely without acid treatments. In this thermal process, Ferroglobe's purified silicon metal reaches 99.995% purity. The material is then mechanically ground to micrometre size. To prevent silicon's dreaded swelling during the charging cycle, Ferroglobe partnered with the California-based specialist Coreshell. Its nanocoating wraps around the particles like an elastic protective shield and prevents electrolyte decomposition. Together, the partners presented automotive-grade 60-Ah battery cells whose anode consists of 80% silicon and retained over 90% of its initial capacity after more than 475 cycles. On a per-kilogram basis, this recycled silicon costs about 50% less than synthetic graphite. This shows that innovation is possible.

Wacker Chemie: Joining Forces Against Beijing's Market Power

Wacker Chemie, based in Munich, is taking a different approach. As the only major European manufacturer of ultra-high-purity silicon for the semiconductor and solar industries, this long-established Bavarian company operates several production sites. A company-owned silicon metal smelter in Holla, Norway, ensures the supply of raw materials. Thanks to the use of Norwegian hydropower, Wacker Chemie's silicon production is likely to emit less CO₂ than many comparable facilities in China—though Wacker has not provided specific comparative figures on this. However, Wacker Chemie does not limit itself to the silicon business alone but is strategically positioning itself across the entire value chain. To enter large-scale production, Wacker Chemie has held a 25% strategic stake in the British battery specialist Nexeon since September 2019.

HPQ Silicon: Reaching Record Levels Thanks to Plasma Technology

While major corporations are modifying existing facilities, HPQ Silicon in Montreal, Canada, is taking a fundamentally new approach. Together with plasma specialist PyroGenesis, the company completely bypasses the complex, multi-step processing of metallurgical silicon. At the heart of the Canadian company's technology is the patented PUREVAP process. The quartz reduction reactor converts quartz directly into high-purity silicon metal, with purity levels ranging from 99.9% to 99.99%, in a single, continuous process step. Thanks to its energy efficiency, HPQ Silicon's reactor significantly reduces electricity consumption compared to conventional arc furnaces. This is where the Nano Silicon Reactor comes in, which immediately converts the liquid silicon into nanopowder and nanowires via plasma gas atomization—eliminating the need for mechanical grinding.

The French subsidiary Novacium, based in Lyon, handles the refinement of the material into production-ready anodes. Novacium combines surface-modified silicon particles with synthetic graphite to create high-strength hybrid materials. **In endurance tests using standardized 18650 cells, Novacium's GEN3 material still exhibited a capacity of around 80% after 1,000 cycles. Meanwhile, HPQ has already tested the fourth generation and has once again made progress. A notable feature of HPQ's products is the completely linear decline in performance, which allows battery management systems to make precise calculations and get the most out of the batteries.

HPQ Silicon: Expansion Plans and Batteries for the Military

HPQ Silicon is not content with just laboratory successes; it is developing commercial supply chains. Under the brand name HPQ ENDURA+, the Canadian company has already delivered its first demonstration batches of cylindrical cells in the 18650 and 21700 form factors to partners in the automotive and defence industries. For use in unmanned aerial vehicles, the company is accelerating its pace even further. Using advanced GEN4 composite materials, HPQ Silicon's batteries in drone battery packs achieved an energy density of 395 Wh/kg. To tap into the lucrative European market, HPQ Silicon is relying on collaborations with established local industry partners to eventually establish large-scale production of silicon-based anode materials in Europe.

Although concrete construction plans are still pending, European demand, which HPQ itself estimates at around 300,000 metric tons of silicon anode material by 2030, underscores the strategic importance of such partnerships. Since the modular plasma reactors require a manageable investment compared to massive chemical plants, HPQ Silicon's approach could have a promising future. Given the regulatory tailwind for technologies that make Western industry less dependent on imports and the investments in defence, HPQ Silicon appears to be well-positioned. Investors may want to take a closer look at the stock.