What Rock Zero does

Rock Zero is a privately held, MIT-spinout climate technology company founded in March 2024 in Cambridge, Massachusetts, that has developed a proprietary low-temperature chemical process for refining lithium from spodumene, the dominant hard rock lithium mineral. The core technology uses a water-and-ammonium-fluoride aqueous solution to leach lithium from spodumene at temperatures below 95°C, eliminating the conventional >1,000°C roasting step that drives both the cost and carbon intensity of standard hard rock lithium extraction. A closed-loop design recovers reagents and water for reuse, and the process yields three marketable outputs: battery-grade lithium carbonate, smelter-grade alumina, and cement-ready silica. Peer-reviewed validation published in Science in May 2026 demonstrated lithium recovery exceeding 95% across 17 tested spodumene sources, and management has stated a production cost target of under $6,000 per tonne, approximately half the cost of conventional hard rock refining.

The company's revenue model contemplates two parallel paths: direct sales of lithium chemicals to battery manufacturers, EV producers, and lithium chemical buyers, enabled by an industrial pilot targeted for completion by end of 2026 with commercial operations starting in 2027, and potential licensing of the proprietary chemistry to non-Chinese lithium producers seeking to establish domestic processing capacity. Target customer segments include battery manufacturers and EV producers (primary), hard rock lithium mining companies, and aluminum and cement industries purchasing the alumina and silica co-products. The company is currently pre-revenue, with go-to-market executed through enterprise field sales supplemented by accelerator pathways (The Engine, Rio Tinto x Founders Factory) and strategic partnerships such as the November 2025 collaboration with IRIS Metals Limited to advance U.S. lithium processing capacity. Supportive stakeholders include ARPA-E, MassCEC, Toyota Ventures, Azolla Ventures, Blindspot VC, and the MIT research group led by co-founder and CIO Yet-Ming Chiang.

Name

Rock Zero

Legal name

Rock Zero

Website

https://rockzero.com

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1–10 employees

Short description

Rock Zero is an MIT spinout that has developed a low-temperature ammonium fluoride process to extract lithium from spodumene without high-temperature roasting, producing battery-grade lithium carbonate, alumina, and silica for battery manufacturers, EV producers, and industrial offtakers.

Ownership category

akta.pro rank

Product category

Lithium Chemicals and Critical Minerals Refining

NAICS

Nonferrous Metal (except Aluminum) Smelting and Refining (33141)

SIC

Industrial Inorganic Chemicals (2810)

akta.pro primary industry

Battery Raw Materials Mining & Refining (Lithium, Nickel, Cobalt, Manganese, Graphite) (EUAFABAA)

akta.pro secondary industry

Battery-Grade Chemical Processing (LiOH/Li2CO3, Ni/Co Sulfates, Mn Sulfate) (IMAKAFAI)

Keywords

• Hardrock lithium refining
• Lithium extraction technology
• Battery-grade lithium production
• Spodumene processing chemicals
• Critical mineral technology

Headquarters

HQ city

Cambridge

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Operations, Infrastructure

Revenue model

1. Lithium Chemical Sales: Rock Zero plans to generate revenue through direct sales of lithium chemicals (lithium carbonate) to battery manufacturers and EV makers. The company is building an industrial pilot facility with operations starting in 2027.
2. Technology Licensing: The proprietary chemistry and process can potentially be licensed to other lithium producers in non-Chinese supply chains, enabling domestic lithium processing in regions with hard rock deposits.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Rock Zero develops and commercializes a proprietary low-temperature chemical refining technology that extracts lithium from spodumene (hard rock lithium mineral) using an ammonium fluoride aqueous solution at room temperature (up to 95°C). The process produces battery-grade lithium carbonate for EV and energy storage batteries, alongside smelter-grade alumina and cement-ready silica as commercially valuable co-products. The closed-loop system recovers all reagents and water for reuse, achieving over 95% lithium recovery with near-zero waste, and is targeted at industrial pilot scale by end of 2026 with commercial operations planned for 2027.

Product overview

Rock Zero offers a single proprietary chemical technology platform for hardrock lithium refining that converts spodumene (lithium-bearing mineral) into three co-products: lithium battery salts (lithium carbonate for EV batteries), smelter-grade alumina (for aluminum metal), and cement-ready silica (for green cement). The closed-loop process operates at room temperature using water and ammonium fluoride, eliminating the energy-intensive roasting step required by conventional methods. All process reagents and water are recycled, and every element in the rock is valorized with zero waste.

Differentiator

Problem solved

Functional benefit

Products and services

• Lithium Battery Salts (Lithium Carbonate) Battery-grade lithium carbonate (Li2CO3) produced through Rock Zero's proprietary low-temperature chemical extraction process from spodumene, intended for sale to electric vehicle battery manufacturers and energy storage system producers.
• Smelter-Grade Alumina Smelter-grade alumina (Al2O3) recovered as a co-product from spodumene processing, intended for sale to aluminum metal producers as feedstock.
• Cement-Ready Silica Reactive silica (SiO2) produced as a co-product of the lithium extraction process, intended for sale to green cement producers and supplementary cementitious materials manufacturers, converting former mining waste into a marketable commodity.

Quantifiable outcome

• Reduces lithium production costs by approximately 50%, targeting under $6,000 per tonne
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core and flagship.

• IRIS MetalscoreStrategic or Co-development Partner · 24 November 2025IRIS Metals Limited, an Australian exploration company with lithium projects in South Dakota and historical mines with visible lithium spodumene crystals, announced collaboration with Rock Zero to advance U.S. lithium processing capacity.
• Rio TintoflagshipGTM or Marketing Partner · 1 April 2025Rock Zero was selected for the Rio Tinto x Founders Factory mining accelerator, providing access to one of the world's largest mining companies for potential commercialization pathways and industry connections.
• The EnginecoreOthersRock Zero is scaling at The Engine, Boston's tough-tech incubator, which provides support for technical scaling and commercialization of hard tech ventures.
• Founders FactoryflagshipGTM or Marketing PartnerFounders Factory partners with major corporations like Rio Tinto on mining accelerator programs that Rock Zero has been selected for.
• MITcoreStrategic or Co-development PartnerRock Zero is an MIT spinout founded by MIT researchers including Professor Yet-Ming Chiang. The company is commercializing technology developed at MIT with ongoing research collaboration.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Vulcan Energy: Vulcan Energy pursues zero-carbon lithium production from geothermal brines in Europe. It is a direct peer in the next-generation lithium refining space, targeting the same EV OEMs with a low-carbon, non-Chinese supply story.
• ioneer: ioneer is developing the Rhyolite Ridge lithium-boron project in Nevada using a sulfuric acid-based processing route for hard rock lithium. It is a comparable hard rock lithium developer pursuing battery-grade lithium supply for the U.S. EV market.
• Piedmont Lithium: Piedmont Lithium is a hard rock (spodumene) lithium developer with U.S. and global assets pursuing battery-grade lithium supply. It is a direct peer in the hard rock lithium-to-battery-chemicals value chain that Rock Zero's technology is designed to disrupt.
• Standard Lithium: Standard Lithium pursues proprietary lithium extraction technologies, primarily DLE from brines, to supply battery-grade lithium chemicals. Both companies operate in the alternative lithium extraction space targeting the same downstream EV/battery off-takers.
• Lilac Solutions: Lilac Solutions develops ion-exchange-based direct lithium extraction technology for brines. Both are venture-backed lithium extraction technology companies targeting the same battery-grade lithium chemical market and competing for the same EV/battery customer offtake.
• EnergyX: EnergyX is a direct lithium extraction (DLE) technology company targeting both brine and hard rock lithium resources. Like Rock Zero, it pursues proprietary chemical/electrochemical processes to produce battery-grade lithium salts more efficiently than conventional methods.

Broad incumbents

• Albemarle: Albemarle is the world's largest lithium producer, operating both brine and hard rock assets. It is the dominant incumbent Rock Zero must displace for U.S./European battery-grade lithium offtake and represents the benchmark for scaled lithium refining economics.
• SQM: SQM is a major global lithium chemical producer, primarily from Chilean brine resources. As a scaled incumbent producing battery-grade lithium salts, it competes directly with Rock Zero's target product (lithium carbonate) on price, scale, and customer relationships.
• Tianqi Lithium: Tianqi Lithium is one of the world's largest hard rock lithium producers (controlling Greenbushes) and a major battery-grade lithium chemical supplier. It is the dominant low-cost hard rock incumbent whose economics Rock Zero's technology is designed to undercut.

Emerging players

• Sunrise Energy Metals: Sunrise Energy Metals is developing a nickel-cobalt laterite project with an integrated hydrometallurgical refining process. It uses analogous aqueous chemical processing of minerals into battery-grade chemicals, providing a comparability reference for the hydrometallurgical pathway Rock Zero is pursuing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds2 records

Investors3 records

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M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Rock Zero