6K Energy

MaterialsNorth Andover, Massachusetts, USAFounded 2014· One of 977 Materials companies tracked by AMPulse

Division of 6K Inc. producing domestic, sustainable lithium-ion battery cathode active materials (CAM) using proprietary UniMelt microwave plasma technology

CEO / Founder: Saurabh Ullal, Ph.D.
Team Size: 51-200
Stage: Growth Stage
Total Funding: $300M
Latest Round: Series E
Key Investors: Anzu Partners; Energy Impact Partners; LaunchCapital; Material Impact; Volta Energy Technologies; Koch Strategic Platforms; Albemarle; HG Ventures; Catalus Capital; S Cap/Prithvi Ventures; RKS Ventures

Technology & Products

Key Products

NMC (Nickel Manganese Cobalt) cathode active material; LFP (Lithium Iron Phosphate) cathode active material; Silicon-dominant anode materials; Solid-state electrolyte materials; PlusCAM production facility (13 kt/yr capacity, Jackson, TN); Battery Center of Excellence (North Andover, MA)

Technological Advantage

Proprietary UniMelt microwave plasma technology — the world's only production-scale microwave plasma system operating at 6,000°K. Enables single-step CAM production vs legacy multi-step co-precipitation (hydro-met) process. 50-60% lower conversion costs, 50% smaller factory footprint, 20-30% CapEx reduction, multi-chemistry capability (NMC, LFP, silicon anode, solid-state electrolyte), domestic feedstock and circular economy model

Differentiation

Value Proposition

Domestic production of low-cost, sustainable lithium-ion battery cathode active materials (NMC and LFP) using UniMelt microwave plasma technology that reduces production time from days to seconds, cuts conversion costs by 50-60%, eliminates hazardous waste, and reduces GHG emissions by up to 70%

How They Differentiate

Unlike competitors using conventional co-precipitation or solid-state methods, 6K Energy's UniMelt microwave plasma is a single-step, 2-second process that eliminates all liquid/solid waste, uses 90% less water, reduces energy by 70%, and achieves lower costs than Asian producers — all while enabling domestic, IRA-compliant production with multi-chemistry flexibility

Market & Competition

Target Customers

Global battery cell manufacturers, automotive OEMs, energy storage system providers, defense contractors, and lithium-ion battery material suppliers seeking IRA-compliant domestic CAM supply

Industry Verticals

Electric Vehicles (EV); Energy Storage Systems (ESS); Grid Storage; Defense/Mission-Critical Systems; Consumer Electronics; AI Infrastructure Backup Power

Competitors

Redwood Materials; Nano One Materials; BASF Battery Materials

Growth & Milestones

Growth Metrics

PlusCAM plant in Jackson, TN: 160,000 sq ft, 13 kt/yr CAM capacity, $200M construction cost; Battery Center of Excellence: 33,000 sq ft, 400 MWh pilot production capacity, 1 ton/month CAM qualification capacity; $50M DOE grant awarded Dec 2023

Major Milestones

2021: $51M Series C led by Volta Energy Technologies; Sam Trinch named President of 6K Energy; 2022: $102M Series D led by Koch Strategic Platforms; Battery Center of Excellence opened ($30M investment); 2023: $50M DOE grant awarded for PlusCAM plant; Groundbreaking on Jackson, TN facility; 2024: $82M Series E close; Saurabh Ullal appointed CEO; PlusCAM plant under construction; 7-year offtake agreement with Gotion Inc.

Notable Customers

Gotion Inc. (7-year LFP offtake); CRG Defense; Stellantis (investor/offtake); multiple global battery cell manufacturers and automotive OEMs (under NDA)

https://www.6kinc.com/6k-energy/

Recent coverage of 6K Energy

Why this company matters

6K Energy addresses the critical gap in the domestic lithium-ion battery material supply chain by producing cathode active materials (CAM) at costs competitive with Asian producers while offering a superior environmental profile. Its proprietary UniMelt microwave plasma technology enables a single-step production process that reduces conversion time from days to seconds, cuts conversion costs by 50-60%, and eliminates liquid and solid waste. This positions the company as a key supplier for electric vehicle, energy storage, and defense applications seeking IRA-compliant domestic sourcing.

The core technology, UniMelt microwave plasma, operates at 6,000°K and is the only production-scale microwave plasma system of its kind. It produces NMC and LFP cathode materials, silicon-dominant anode materials, and solid-state electrolytes in a single step, replacing the legacy multi-step co-precipitation process. The PlusCAM plant in Jackson, Tennessee, with 13 kt/yr capacity, and the Battery Center of Excellence in North Andover, Massachusetts, support qualification and production scale-up.

6K Energy targets global battery cell manufacturers, automotive OEMs, and defense contractors. Notable customers include Gotion Inc., under a seven-year LFP offtake agreement through 2032, and Stellantis, which is both an investor and offtake partner. The company also collaborates with CRG Defense on U.S. defense battery supply chains and has supply agreements with Aqua Metals and Albemarle for recycled and sustainable materials. A $50 million U.S. Department of Energy grant supports the PlusCAM plant construction.

The company's strategic moat lies in its UniMelt process, which offers multi-chemistry flexibility, a 50% smaller factory footprint, and 20-30% CapEx reduction versus conventional methods. However, scaling production to meet large-volume OEM demand and competing with established Asian supply chains remain open questions. Competitors include Redwood Materials, Nano One Materials, and BASF Battery Materials, each pursuing different recycling or solid-state approaches.