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01 · Research & development

An all-solid-state battery,
designed in France.

Our 100% self-funded R&D programme is developing a battery without liquid electrolyte: denser, longer-lasting and with no fire risk. It holds the Bpifrance Deeptech label and is supported by ANRT.

Technology

All-solid-state batteries win on every metric.

A conventional battery relies on a flammable liquid electrolyte. TOROW replaces it with a solid electrolyte, thanks to proprietary electrochemistry and an exclusive process designed for industry from day one.

All-solid-state battery cell in its test rig, in black and white
~500 Wh/kgEnergy density (lithium)
7,500+Cycle life
3×Faster charging
0Fire risk, by design
Liquid vs all-solid-state: what changes
Liquid-electrolyte batteryTOROW all-solid-state battery
Energy densityRange capped by chemistryUp to 3× more range, longer use
SafetyThermal runaway risk to manageNo fire risk, by design
LifespanReplacement drives total cost2 to 5× more cycles
Charging speedFast charging wears the batteryUp to 3× faster
Thermal stabilityCooling requiredOperates in harsher environments
Material efficiencyHeavy casing, little energy per kiloUp to 1.5× more usable energy per kilo
Form factorThe battery dictates product designThe battery adapts to the product
End of lifeDisposal cost and regulatory exposureCleaner recovery, ESG-aligned
International landscape

A unique position, protected by high barriers to entry.

  • Proprietary electrochemistry
  • Industrial design from day one
  • Exclusive process
Player · technology
Energy density (Wh/kg)
Lifespan (cycles)
TOROWFrance · All-solid-state · ceramic, proprietary process
~500
7,500+
Samsung SDISouth Korea · All-solid-state · sulfide
~500
1,000+
Solid PowerUSA · All-solid-state · sulfide
~400
1,000+
BasquevoltSpain · All-solid-state · sulfide
~400
n/d
ProLogiumTaiwan · All-solid-state · ceramic separator
~380
1,200+
FactorialUSA · Hybrid · quasi-solid
~375
600+
QuantumScapeUSA · All-solid-state · ceramic separator
~300
1,000+
Blue SolutionsFrance · Hybrid · lithium metal polymer
~180
3,500+

Public company data (official websites, publications), IEA, IDTechEx, Bloomberg NEF, TOROW internal documents. As test methods vary between players, results are not directly comparable. Chinese players excluded. n/d: not disclosed.

Two chemistries, one technology

Lithium first, sodium next.

TOROW is developing its all-solid-state technology in both lithium and sodium. We are starting with lithium, because the sodium supply chain does not yet exist at industrial scale. The road to industrialisation remains long and demanding: we are moving forward step by step, with our academic partners.

All-solid-state lithiumTarget first product
~500 Wh/kgTarget energy density
  • Target of 7,500+ cycles
  • A chemistry that can build on an already industrialised lithium supply chain
  • A process designed to fit existing production lines – something we still have to demonstrate
  1. TodayTRL 4: validated by our academic partner (CNRS, Université Paris-Saclay)
  2. Early 2027TRL 6/7: working prototype in real-world conditions, with a client partner
  3. 2027 – 2028Validating transfer to existing industrial lines
  4. 2028 – 2036Deployment
All-solid-state sodiumResearch programme
430 Wh/kgTarget energy density
  • Lithium-free, based on an abundant resource
  • With the ICMMO (CNRS, Université Paris-Saclay) and ICMPE (CNRS, UPEC) laboratories
  • Industrial sodium supply chain still to be built
  1. July 2025Endorsed by the DERBI-CEMATER competitiveness cluster
  2. TodayTRL 4: validated by our academic partner (CNRS, Université Paris-Saclay)
  3. By 2030TRL 6/7
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