Cohort 10 (2024): Raw Materials, Gigafactory Ramp-Up and Thermal Safety

Our Cohort 10 battery course ran through April 2024, and the group that assembled was focused on the questions that dominated the industry that spring: where the raw materials would come from, which chemistries beyond lithium-ion deserved serious attention, and how new gigafactories would actually ramp to full output. Across ten lectures, a wide set of office hours and five case studies, the sessions moved from mines and policy to cell design, predictive analytics and thermal safety. This recap draws together the themes that ran through the cohort.

Raw materials, policy and the supply chain

The cohort opened on materials. A lecture on trends in battery raw material supply chains set the frame, and sessions on critical raw materials in the EU for EV batteries gave the policy backdrop. The group kept returning to a single tension: demand for lithium, nickel, cobalt and graphite is growing faster than supply can comfortably follow, and both geography and regulation are reshaping who gets access.

That played out across regions. An office hour on the African battery value chain, from cradle to cell, and case work on the challenges of lithium supply for the Indian market gave the cohort concrete geography. A talk on where battery metals come from mapped the sources of lithium and the others, while battery policy and investment sessions connected material access to the money and rules that steer it. The recurring lesson was that raw materials are now as much a policy and diplomacy question as a mining one.

Beyond lithium-ion: chemistries and cell design

Chemistry diversity was one of the strongest currents this cohort. Sodium-ion appeared repeatedly, in an overview of the technology and in a session on recent developments, reflecting real momentum as a lower-cost, lithium-free option for storage. Solid-state featured in a lecture framing it as the next step for the industry, and redox flow batteries came up as a distinct answer for long-duration storage. Office hours on anode active materials and on developing electrode materials for batteries and supercapacitors kept the discussion rooted in the materials that make any chemistry work.

Cell design pulled these threads together. Lectures on battery cell design and on the drivers of cell production, plus a case study on cell design and manufacturing, showed how chemistry choices become engineering decisions about format, energy density and cost. Reimagining materials and battery research at early readiness levels reminded the group that today's production chemistries were once laboratory curiosities, and that the pipeline matters.

Manufacturing, storage, safety and traceability

The build-out was a major theme. A case study on setting up a gigafactory in North America and an office hour on gigafactory ramp-up in Canada gave the group a live view of how capacity comes online, and why ramping to yield is harder than pouring concrete. Battery smart manufacturing, MOM and LIMS sessions showed the digital and quality systems that modern plants depend on to hit specification at volume.

Storage and safety ran alongside. Battery energy storage solutions featured in lectures and in a case on resilient microgrids with BESS, while a session comparing conventional power converters with modular multilevel converters got into the power electronics behind grid storage. Predictive analytics appeared as a way to get more from batteries in service. Safety was unusually prominent: sessions on thermal runaway, its hazardous effects, and a model for predicting lithium-ion explosions treated failure as something to be understood and engineered against. Circularity closed the loop, with the EU Battery Passport, lithium-ion in waste and recycling streams, and a case comparing EV battery recycling with reuse.

Key Takeaways

• Cohort 10 opened on raw materials, weighing supply trends, EU critical raw materials rules and sourcing across Africa, India and beyond.
• Chemistry diversity was a headline theme, with sodium-ion, solid-state and redox flow all examined as complements or alternatives to lithium-ion.
• Cell design connected chemistry to engineering, covering format, production drivers and early-readiness materials research.
• Gigafactory ramp-up in North America and Canada showed why reaching yield is the real manufacturing challenge, supported by smart manufacturing, MOM and LIMS.
• BESS anchored the storage discussion, including resilient microgrids and the converter choices behind grid storage.
• Safety was prominent, with sessions on thermal runaway and a model for predicting lithium-ion explosions.
• Circularity ran throughout, from the EU Battery Passport to recycling-versus-reuse and lithium-ion in waste streams.