Semi-Solid Battery Patents

Semi-solid battery patents cover semi-solid slurry electrode innovations; thick-electrode cell architecture innovations; simplified manufacturing process innovations; and chemistry-agnostic integration innovations — with IP held by battery-platform companies, electrode/manufacturing companies, and research organizations. WHY SEMI-SOLID BATTERIES: a SEMI-SOLID battery replaces conventional thin, binder-laden, calendered electrodes with much THICKER electrodes made of a SEMI-SOLID SLURRY — active-material particles plus a conductive additive suspended directly in the liquid ELECTROLYTE — so instead of a dried, solvent-cast, calendered film glued together with polymer BINDER on a current collector, the electrode is a flowable-then-set paste that already contains its own electrolyte; because the slurry holds the electrolyte and percolates electronically, the design needs NO polymer BINDERS and far FEWER inactive layers (current collectors and separators) per unit of energy, so a much larger fraction of the cell mass and volume is ACTIVE material; the payoffs are threefold and honest: higher cell-level ENERGY DENSITY (more active, less inactive material), lower COST (less inactive material plus a radically SIMPLER manufacturing process), and a flexible, CHEMISTRY-AGNOSTIC path (the same slurry-and-thick-electrode architecture can carry different lithium-ion or lithium-metal chemistries); critically, this is primarily an ELECTRODE-ARCHITECTURE and MANUFACTURING innovation, NOT a brand-new chemistry — the win comes from how the electrode is built, not from a new redox couple; the manufacturing payoff is large because the conventional electrode line — slurry coating, long DRYING ovens, SOLVENT (NMP) recovery, and CALENDERING — is exactly what is ELIMINATED, cutting capex, energy, and footprint; the CATCH is honest and central — a very THICK electrode makes electronic/ionic TRANSPORT harder, so RATE CAPABILITY (how fast you can charge/discharge) is the tradeoff against the cost and energy-density win, and slurry RHEOLOGY (processable yet forming a stable conductive PERCOLATION network) plus MANUFACTURING precision are the hard engineering. MAJOR PLAYERS: the approach was pioneered by 24M TECHNOLOGIES with its SemiSolid platform (an MIT spinout associated with YET-MING CHIANG), now built by LICENSEES including FREYR BATTERY, KYBURZ, LUCAS TVS, and AXXIVA, plus electrode/manufacturing suppliers and academia. Slurry electrode, thick-electrode architecture, manufacturing process, and chemistry-agnostic integration are the core semi-solid patent domains. (Note: SLURRIES (composition), CELLS (device), and the drying/solvent/calendering-free PROCESS are §101-RESILIENT — so claim slurries, cells, processes, and integration.)

Semi-solid slurry electrode innovations; thick-electrode cell architecture innovations; binder-free slurry innovations; and rate-capability engineering innovations represent core semi-solid-battery patent domains — and the slurry electrode (the heart) and the thick-electrode architecture (the energy-density payoff) are the foundational, high-value, §101-resilient capabilities. SEMI-SOLID SLURRY ELECTRODE PATENTS: the HEART — BINDER-FREE SLURRY FORMULATION (the suspension of active-material particles and a conductive additive in liquid ELECTROLYTE that works WITHOUT any polymer BINDER, because the slurry itself provides ionic conduction and mechanical cohesion), ACTIVE LOADING (maximizing the fraction of active material in the slurry to push energy density while keeping the suspension processable), CONDUCTIVE PERCOLATION NETWORK (the connected web of conductive additive that carries electrons through a thick, electrolyte-filled electrode — getting this percolation right is what makes a thick semi-solid electrode actually work), and RHEOLOGY (tuning the flow/viscosity so the slurry can be dosed and shaped during manufacturing yet hold its structure in the cell); slurry methods are core, high-value, DISTINCTIVE composition IP, §101-resilient (binder-free slurry formulation, active loading, the conductive percolation network, and rheology are the central, contested, defensible IP, since the semi-solid slurry is literally the invention — the electrode that needs no binder and carries its own electrolyte — the heart). THICK-ELECTRODE CELL ARCHITECTURE PATENTS: the ENERGY-DENSITY PAYOFF — THICK ELECTRODE DESIGN (the cell that exploits a much thicker active layer so far fewer current collectors and separators are needed per unit of energy), INACTIVE-MATERIAL REDUCTION (cutting binder, collectors, and separators to raise the active fraction — the structural source of both higher energy density AND lower cost), RATE-CAPABILITY ENGINEERING (electrode/cell design that mitigates the slow electronic/ionic TRANSPORT through a thick electrode — pore structure, additive network, thickness tuning — because rate is the honest tradeoff), and CELL FORMAT (the packaging and stacking that turns thick semi-solid electrodes into a working cell); architecture methods are core, high-value, DISTINCTIVE device IP, §101-resilient (thick-electrode design, inactive-material reduction, rate-capability engineering, and cell format are core, contested, defensible IP, since the architecture is where the binder-free slurry becomes higher energy density and lower cost — and where the rate tradeoff is managed). BINDER-FREE SLURRY PATENTS: stable binder-free semi-solid slurries with a robust percolation network; binder-free slurry methods are high-value composition IP, §101-resilient (no binder is the defining feature). RATE-CAPABILITY ENGINEERING PATENTS: thick-electrode designs that recover charge/discharge rate; rate-capability methods are high-value device IP, §101-resilient (rate is the crux tradeoff). Slurry electrode, thick-electrode architecture, binder-free slurry, and rate-capability engineering are the highest-value core IP because the binder-free slurry and the thick-electrode architecture are exactly what convert less inactive material into more energy density and lower cost.

Simplified manufacturing process innovations; drying-free process innovations; solvent-free process innovations; and calendering-free process innovations represent additional semi-solid-battery patent domains — and the simplified manufacturing process (the economic moat) is what turns the slurry-and-thick-electrode architecture into a genuinely cheaper, lower-capex battery. SIMPLIFIED MANUFACTURING PROCESS PATENTS: the ECONOMIC MOAT — DRYING-FREE (the conventional electrode line runs wet slurry through long DRYING ovens to drive off solvent; the semi-solid process keeps the electrolyte IN the electrode, so the energy-hungry, footprint-heavy drying step is ELIMINATED), SOLVENT-FREE (conventional slurries use NMP solvent that must be captured and RECOVERED at cost and environmental burden — the semi-solid slurry uses the electrolyte itself, so there is no separate solvent to recover), CALENDERING-FREE (conventional electrodes are compressed/CALENDERED to set density; the semi-solid thick electrode is formed differently, removing this step), and DOSING/FORMING (the new unit operations — metering, dispensing, and shaping the semi-solid slurry into thick electrodes with precision and uniformity); process methods are core, high-value, DISTINCTIVE process IP, §101-resilient (drying-free, solvent-free, calendering-free processing plus the new dosing/forming steps are the central, contested, defensible IP, since the simplified process is where the COST and CAPEX advantage actually lives — eliminating the most expensive, energy-intensive, capital-heavy stages of conventional electrode manufacturing is a major economic moat, not just a cleaner factory). DRYING-FREE PROCESS PATENTS: electrode formation that removes the drying oven; drying-free methods are high-value process IP, §101-resilient (drying is a dominant cost/capex stage). SOLVENT-FREE PROCESS PATENTS: electrolyte-as-medium processing with no NMP recovery; solvent-free methods are high-value process IP, §101-resilient (solvent recovery is a real cost and environmental burden). CALENDERING-FREE PROCESS PATENTS: thick-electrode forming without compression; calendering-free methods are high-value process IP, §101-resilient (removing calendering changes both cost and electrode structure). Manufacturing process, drying-free, solvent-free, and calendering-free are the highest-value IP because the simplified process — not a new chemistry — is the core reason a semi-solid battery can be cheaper and lower-capex, and is therefore a defensible, §101-resilient economic moat.

Semi-solid battery startup IP strategy must navigate the slurry-architecture-and-process-are-§101-resilient (semi-solid IP is SLURRY (composition), CELL/ARCHITECTURE (device), and the drying/solvent/calendering-free PROCESS — strongly §101-RESILIENT — so slurry, thick-electrode architecture, manufacturing, and integration claims are strong), the binder-free-slurry-is-the-heart (the semi-solid SLURRY — active material and conductive additive suspended in electrolyte with NO polymer BINDER — is the defining invention, so slurry FORMULATION, ACTIVE LOADING, the conductive PERCOLATION network, and RHEOLOGY are the single most decisive composition IP), the simplified-manufacturing-process-is-the-economic-moat (eliminating electrode DRYING, SOLVENT (NMP) recovery, and CALENDERING is where the COST and CAPEX advantage really lives, so the drying-free/solvent-free/calendering-free process plus new DOSING/FORMING steps are a high-value, defensible process moat — a major reason semi-solid can undercut conventional cost), the it-is-architecture-and-manufacturing-not-new-chemistry (be clear-eyed: semi-solid is primarily an ELECTRODE-ARCHITECTURE and MANUFACTURING innovation, NOT a new redox chemistry — the moat is HOW the electrode is built and processed, so claim the slurry, the thick-electrode cell, and the process, and lean on manufacturing know-how), the thick-electrode-raises-energy-density-and-cuts-cost (a much THICKER electrode means far less inactive material — fewer binders, collectors, and separators per unit of energy — which raises cell-level ENERGY DENSITY and lowers COST simultaneously, a genuine, claimable structural advantage), the rate-capability-is-the-honest-tradeoff (be honest: a very thick electrode makes electronic/ionic TRANSPORT harder, so RATE CAPABILITY (fast charge/discharge) is the tradeoff against the cost and energy-density win — target applications where energy density and cost matter more than peak power, and treat RATE-CAPABILITY ENGINEERING as a key place to differentiate), the chemistry-agnostic-platform-is-a-strategic-asset (the same slurry-and-thick-electrode architecture can carry different lithium-ion or lithium-metal chemistries, so the platform can ride chemistry improvements rather than betting on one — a flexible, defensible position), the demonstrated-cost-per-kWh-energy-density-and-rate-decide (semi-solid is proven by demonstrated $/kWh, cell-level ENERGY DENSITY, and RATE capability — so demonstrated, honest economics and performance matter as much as patents, since the pitch is cheaper and denser, and the burden is to show it without an unacceptable rate penalty), the platform-vs-licensee-business-model (the pioneer LICENSES the platform to manufacturers rather than building every gigafactory itself — a startup must choose whether it is a platform/IP licensor, a manufacturing licensee, or a materials/equipment supplier, each with different IP and capital needs), and the incumbent-and-FTO (24M Technologies pioneered the SemiSolid platform and holds significant foundational IP, with licensees Freyr Battery, Kyburz, Lucas TVS, and Axxiva building on it, plus conventional cell makers and electrode/equipment majors — so a startup needs a genuinely novel slurry/architecture/process edge and FTO), and a landscape where slurry, thick-electrode architecture, manufacturing process, and chemistry-agnostic integration are the durable assets; understand that the binder-free slurry is the heart and the simplified manufacturing process is the economic moat, so the durable startup IP is in better binder-free slurries (formulation, percolation, rheology), thicker electrodes with recovered rate capability, drying/solvent/calendering-free processes, and chemistry-agnostic integration — with a cheaper process or a higher-active-loading rate-capable slurry often the real moat, and that §101-resilient slurry/cell/process IP, demonstrated cost-per-kWh, energy density, and rate, and FTO matter as much as patents; identify whitespace in high-active-loading binder-free slurries, rate-capable thick electrodes, and lower-capex dosing/forming processes. SEMI-SOLID BATTERY STARTUP IP STRATEGY: SLURRY, ARCHITECTURE, MANUFACTURING, AND INTEGRATION ARE THE IP: patent slurries, thick-electrode cells, processes, and integration — composition + device + process claims (§101-resilient); SLURRY-ARCHITECTURE-AND-PROCESS-ARE-§101-RESILIENT: SLURRY (composition) + CELL/ARCHITECTURE (device) + PROCESS IP — strongly §101-RESILIENT; BINDER-FREE-SLURRY-IS-THE-HEART: active material + conductive additive in electrolyte with NO BINDER — FORMULATION + ACTIVE LOADING + PERCOLATION network + RHEOLOGY the single most decisive composition IP; SIMPLIFIED-MANUFACTURING-PROCESS-IS-THE-ECONOMIC-MOAT: no DRYING + no SOLVENT (NMP) recovery + no CALENDERING + new DOSING/FORMING — where COST and CAPEX advantage lives, a defensible process moat; IT-IS-ARCHITECTURE-AND-MANUFACTURING-NOT-NEW-CHEMISTRY: an ELECTRODE-ARCHITECTURE + MANUFACTURING innovation — the moat is HOW the electrode is built and processed, not a new redox couple; THICK-ELECTRODE-RAISES-ENERGY-DENSITY-AND-CUTS-COST: thicker electrode = far less inactive material (binders/collectors/separators) per unit of energy — higher cell-level ENERGY DENSITY + lower COST simultaneously; RATE-CAPABILITY-IS-THE-HONEST-TRADEOFF: a thick electrode makes TRANSPORT harder, so RATE (fast charge/discharge) is the tradeoff against the cost + energy-density win — target energy/cost-led uses, engineer rate back; CHEMISTRY-AGNOSTIC-PLATFORM-IS-A-STRATEGIC-ASSET: the same slurry + thick-electrode architecture carries different lithium-ion/lithium-metal chemistries — ride chemistry gains, don't bet on one; DEMONSTRATED-COST-PER-KWH-ENERGY-DENSITY-AND-RATE-DECIDE: proven by $/kWh + cell-level ENERGY DENSITY + RATE — honest economics + performance decisive; PLATFORM-VS-LICENSEE-BUSINESS-MODEL: be a platform/IP LICENSOR, a manufacturing LICENSEE, or a materials/equipment supplier — a key choice; INCUMBENT-AND-FTO: 24M Technologies (SemiSolid platform) + licensees Freyr Battery/Kyburz/Lucas TVS/Axxiva + conventional cell makers + electrode/equipment majors — need a novel edge + FTO; WHEN TO PATENT: NOVEL SLURRY/ARCHITECTURE/PROCESS WITH DATA: file once it shows data (slurry active loading/percolation + thick-electrode energy density + process cost/capex + rate capability) — composition + device + process claims; demonstrated cost-per-kWh, energy density, and rate are the critical semi-solid IP metrics; KEY FTO CHECKLIST: 24M Technologies + licensees Freyr Battery/Kyburz/Lucas TVS/Axxiva + conventional cell makers + electrode/equipment majors; slurry (binder-free FORMULATION/ACTIVE LOADING/conductive PERCOLATION/RHEOLOGY — §101-resilient, the heart); architecture (THICK-ELECTRODE design/INACTIVE-MATERIAL reduction/RATE-CAPABILITY engineering/cell format — §101-resilient, the energy-density payoff); manufacturing (DRYING-free/SOLVENT-free/CALENDERING-free/DOSING-FORMING — §101-resilient, the economic moat); integration (chemistry-agnostic across lithium-ion/lithium-metal + FTO); slurry + architecture + process the §101-resilient strength; binder-free slurry the heart; simplified manufacturing process the economic moat; architecture and manufacturing not new chemistry; thick electrode raises energy density + cuts cost; rate capability the honest tradeoff; chemistry-agnostic platform a strategic asset; demonstrated cost-per-kWh + energy density + rate decide; platform vs licensee business model; incumbent + FTO.