Coulomb Technology is pioneering next-generation sodium-ion batteries that are fire-safe, durable, and environmentally sustainable.
By moving beyond lithium, we reduce dependence on critical foreign minerals and promote domestic manufacturing to strengthen U.S. energy security.
Our innovative battery technology delivers reliable, cost-effective, and eco-friendly power solutions for renewable energy integration, electric mobility, and defense—supporting a cleaner, safer, and more self-reliant energy future.
Coulomb Technology is developing next-generation sodium-ion batteries that are fire-safe, durable, and sustainably manufactured in the United States.
Our mission eliminates dependence on geopolitically constrained lithium and cobalt resources while addressing the major challenges of lithium-ion technology: fire hazards, high costs, limited raw materials, and environmental/ethical mining concerns.
Using abundant, low-cost, domestically available materials, our sodium-ion batteries provide a truly homegrown alternative that ensures energy independence and national security.
Key Advantages
- Inherently non-flammable – Safe operation even in extreme conditions
- Ideal for stationary storage, renewable integration, and defense applications
- Local sourcing and manufacturing – Reduces carbon emissions and supports circular economy practices
Coulomb Technology is powering a safer, cleaner, and more self-reliant future for American energy.
Founders & Leadership
- Tim Vosburgh – Co-founder & CEO
Seasoned business leader with an MBA and over 35 years of experience, including high-volume manufacturing at Apple/Flextronics and a prior successful startup exit. - Subathra – Co-founder & CTO
23 years of expertise in process design and battery R&D, specializing in sustainable and scalable energy storage technologies.
Inspired by firsthand exposure to the environmental and ethical impacts of lithium/cobalt mining, the founders are driving a mission for safer alternative chemistries.
The team is strengthened by PhD scientists and materials researchers, with active collaborations at Oak Ridge National Laboratory (ORNL) and academic/industry partners. This combination of deep technical expertise, operational experience, and strategic networks uniquely positions Coulomb Technology to deliver domestically manufactured, fire-safe sodium-ion batteries.
Coulomb Technology targets defense, marine, and stationary energy storage markets where safety, reliability, and domestic sourcing are mission-critical.
Initial Traction & Entry Strategy
- U.S. Navy SBIR Award – Pilot deployment for marine energy storage
- U.S. Air Force Discussions – Potential 1 MWh system for grid/microgrid applications
- Target Segments – Renewable microgrids, healthcare facilities, data centers seeking fire-safe alternatives
Commercialization Approach
- Strategic OEM and integrator partnerships
- Collaborations with utilities, system installers, and government agencies
- Domestic partnerships for material supply, cell manufacturing, and R&D
- University and testing center validation for performance and certification
Through these channels, Coulomb aims to become the leading provider of safe, sustainable, U.S.-produced sodium-ion battery systems for public and private sectors.
Coulomb Technology will generate revenue through battery system sales, licensing, and strategic pilot deployments.
Primary Revenue Streams
- Modular Battery Packs & Integrated Systems
Scalable configurations (100 kWh to multi-MWh) for defense, marine, microgrid, and healthcare applications - Early Revenue from Government Pilots
SBIR contracts and defense collaborations - Future Expansion
Direct sales and OEM partnerships with renewable developers and equipment manufacturers
Investment Opportunity
Coulomb Technology is seeking $5 million in seed funding to scale pilot production, achieve certifications, and accelerate commercialization of our sodium-ion battery systems.
The investment will establish a U.S. pilot manufacturing facility, optimize cell assembly, and advance R&D for higher energy density and cycle life.
Use of Proceeds
| Allocation | Percentage | Purpose |
|---|---|---|
| Manufacturing Equipment & Automation | 40% | Electrode and cell manufacturing line |
| Certification & Field Validation | 30% | UL9540/UL1973 certification and pilot deployments |
| Team Expansion | 20% | Hire engineers, supply chain, and sales talent |
| Working Capital | 10% | Operational expenses |
We also welcome strategic manufacturing and defense partners to co-develop large-scale systems. This funding will accelerate the transition to market-ready domestic production and capture growing demand for safe, lithium-free energy storage.
Coulomb Technology has achieved Technology Readiness Level (TRL) 7 – system prototype demonstrated in operational environments.
Key Technical Milestones
- Validated energy density, thermal stability, and cycle life
- U.S. Navy SBIR award for marine pilot
- Active discussions for 1 MWh U.S. Air Force deployment
- Participation in top accelerators: NSF i-Corps, DOE Cradle to Commerce, CleanTech Open, ChargeUp, BRITE, SPARK
Next Steps
- Scale pilot manufacturing
- Achieve UL9540/UL1973 certification
- Integrate into commercial stationary systems
With proven performance, federal validation, and strong partnerships, Coulomb is positioned to deliver domestically made, fire-safe sodium-ion batteries for sustainable energy storage.
Coulomb Technology has raised approximately $2.2 million in non-dilutive grants and participated in leading clean energy accelerators.
Funding & Accelerator Support
| Source/Program | Description |
|---|---|
| DOE LEEP Innovation Crossroads (Oak Ridge National Laboratory) | Major non-dilutive grant support |
| New Jersey Seed Grant | Early-stage funding |
| CalSEED (California) | Innovation grant |
| NSF i-Corps | Customer discovery and commercialization |
| DOE Cradle to Commerce (Berkeley & Argonne Labs) | Path to market support |
| CleanTech Open, ChargeUp, BRITE Energy Innovators, SPARK Cleantech | Top accelerator programs |
