Ionobell
A breakthrough technology for producing silicon-dominant batteries at scale.
San Francisco, United States · $11.2M raised
- Headquarters
- San Francisco, California
- Employees
- 1–10
- Business Model
- B2B
- Website
- ionobell.com
- Total Funding
- $11.2M
- Last Round
- $7.3M SeedMar 2024
- Rounds
- 2
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
Ionobell is a silicon battery materials and licensing company that develops porous nano-particle silicon anode technology for automotive and electronics manufacturers. The company's drop-in solution enables manufacturers to upgrade existing battery production equipment to produce silicon-dominant batteries without massive new capital expenditure, reducing cost per kWh by up to 30% while delivering up to 50% more energy density than conventional graphite anodes. Ionobell's materials, which are 500% more energy-dense than graphite, are designed for both standard Li-ion and solid-state battery designs, and leverage recycled waste materials to reduce environmental impact for industry partners. The company works with major automotive manufacturers across the US to help them reach high-volume silicon battery output.
Summary
Ionobell is a Climate Tech company based in San Francisco, United States. It has raised $11.2M in total across 2 rounds, most recently a $7.3M Seed round in Mar 2024. Investors include Dynamo Ventures and Trucks Venture Capital.
Tech & App Stack
1 technology or app tracked
Every product and vendor across these categories, with where each signal came from.
Create a free account with 25 free credits every month, no card needed, to unlock the full tech & app stack, funding history, and valuations.
Funding History
Mar 2024
Sign up to see all 2 events
Funding: Seed through Extension Round. Amounts, valuations, and investors where available.
Investors
Similar Companies
AI infrastructure company building renewable-powered data centers and cloud compute optimized for...
Self-driving cars.
Green steel company using hydrogen and renewable electricity to decarbonize steel production. For...

EnBW Energie Baden-Württemberg AG is one of Germany's largest integrated energy companies, develo...
Appears in
Your company? Embed this profile
Add the live badge to your site — it stays current as your funding data updates.
<a href="https://indexed.vc/companies/ionobell"><img src="https://indexed.vc/api/badge/company/ionobell" alt="Ionobell on Indexed.vc" width="260" height="76" /></a>
