This technology improves electrochemical stability, cycle performance, and lifespan by coating the surface of LiNi0.6Mn0.2Co0.2O2, a lithium secondary battery cathode active material, with fine zeolite particles that have been ion-exchanged with lithium ions.
While lithium-nickel-based metal oxides (NMC) are advantageous for achieving high capacity, they have historically suffered from poor cycle performance. Furthermore, their high reactivity with electrolytes leads to a rapid decline in lifespan over extended periods of use.
This technology involves exchanging cations such as Na+ within the zeolite for Li+, milling the particles to 0.1㎛ or less, coating them at 3 to 9 parts by weight per 100 parts of active material, and modifying the surface through heat treatment at 100–500℃. Applicable to long-range electric vehicle batteries and residential ESS cells requiring long warranty periods, the porous zeolite acts as a protective layer that absorbs electrolyte side reactions without hindering lithium ion transport.
This technology synthesizes honeycomb or hollow-structured Li3VO4 particles using a solution precipitation method with a polystyrene template. During heat treatment to remove the template, a trace amount of carbon is uniformly left on the particle surface to improve electrical conductivity.
Conventional lithium vanadium oxide is in bulk form, resulting in a small specific surface area that limits electrode reaction rates. Additionally, its low electrical conductivity makes it difficult to meet the performance requirements for high-power, high-capacity batteries.
This technology uses surfactant-free emulsion-polymerized polystyrene beads as a template to coat and precipitate Li3VO4. Heat treatment at 350–450°C burns off the template to create honeycomb and hollow structures while distributing 0.5–1.0 wt% of residual carbon on the surface. It can be applied to anodes for hybrid vehicle cells requiring rapid charging or high-power energy storage devices, securing a large reaction area and conductive pathways simultaneously without a separate carbon coating process.
This technology mitigates localized current density in metal secondary batteries using lithium anodes by controlling the layout of lead tabs and the physical surface pressure at electrode connection points, thereby suppressing the formation and growth of metallic dendrites.
When using metal electrodes such as lithium anodes, current density tends to concentrate locally around the areas where lead tabs are attached. This leads to rapid dendrite formation in these regions, which compromises the safety and reliability of the battery.
This technology disperses current concentration areas by attaching the cathode and anode lead tabs in different directions, distributes current evenly across multiple lead tab units, and increases surface pressure around the lead tab connection points using insulating protrusions or embossed/debossed patterns on the electrode plates. It can be applied to high-energy-density pouch cells using lithium metal anodes and next-generation battery cell designs for drones and electric vehicles, providing a solution that reduces short-circuit risks through cell structure optimization alone, without requiring material changes.
This technology utilizes CaxMoO3·yH2O (0
Conventional cathode materials for lithium-ion batteries, such as V2O5, MoO3, and Mo6S8, have struggled with poor calcium-ion mobility when applied to calcium-ion batteries. This has resulted in either the inability to operate as a battery or significantly limited performance.
This technology features an orthorhombic layered CaxMoO3·yH2O structure designed to allow for the reversible movement of calcium ions. The active material is produced through a process of reacting molybdenum oxide, dithionite, and molybdate, followed by a secondary reaction with a calcium compound. Applicable to divalent ion-based post-lithium battery research and cost-effective energy storage system cathodes, this design approach utilizes interlayer moisture to expand the pathways for calcium-ion transport.
This technology utilizes hydrated vanadium oxide with a monoclinic crystal structure as an electrode active material to enable the reversible intercalation and deintercalation of calcium ions.
When conventional active materials for lithium-ion batteries are applied to calcium-ion batteries, calcium ions often become irreversibly trapped, preventing them from being extracted. This results in limitations such as the inability to charge and discharge or significantly degraded performance.
This technology uses CaxV2O5·yH2O (where 0 ≤ x < 2 and 0 < y < 1) as the active material. It is configured by directly forming V2O5·yH2O on a carbon electrode via electrochemical oxidation in a vanadium electrolyte solution, followed by conversion in a calcium electrolyte. This process allows for the growth of the active material directly onto the current collector without a binder. It is applicable to the development of large-scale calcium-based storage batteries and offers the advantage of eliminating slurry coating steps while enhancing adhesion between the active material and the carbon electrode.
This technology is a hydrogel-based polymer binder that crosslinks a glycol chitosan backbone with dibenzaldehyde-terminated polyethylene glycol (PEG) side chains via imine bonds, effectively controlling the volume expansion of silicone anodes while maximizing ionic conductivity and self-healing capabilities.
Silicone anodes undergo rapid volume changes of up to approximately 400% during charge and discharge cycles. This causes silicon particles to fracture, leading to electrode structural collapse, loss of electrical contact, and increased side reactions with the electrolyte, which significantly shortens battery lifespan.
This technology forms a crosslinked polymer network through reversible imine bonds between the amine groups of glycol chitosan and the aldehyde groups of dibenzaldehyde-terminated PEG. This network absorbs external physical stress and self-heals, while hydroxyl and amine groups enhance interfacial adhesion and the PEG regions improve lithium-ion conductivity. Applicable to high-silicon content anodes that expand rapidly during fast charging or to small cells for wearable devices, the binder itself acts as an ion pathway, providing greater flexibility in conductive additive and electrolyte design.
This technology involves coating a separator with a composite that embeds the radical scavenger trimesitylborane (TMB) onto the surface of tungsten oxide (WO3) to chemically remove radical species generated by electrochemical side reactions within the battery and suppress electrolyte decomposition.
When using high-energy-density Ni-rich NCM cathodes, unstable Ni4+ species on the surface react with the surrounding electrolyte to generate highly reactive radical species, which leads to chain-reaction electrolyte decomposition and reduced battery lifespan.
This technology involves manufacturing a WO3-TMB composite by anchoring TMB to tungsten oxide and coating it onto the separator surface in a layer approximately 12 μm thick. The boron atom at the center of the TMB binds to and scavenges radical species via its vacant p-orbital. It can be applied to premium electric vehicle cells using high-nickel cathodes and power storage modules requiring long-cycle operation, effectively trapping Ni4+-originated radicals at the separator surface before they spread throughout the electrolyte.
This technology improves the mechanical properties and dimensional stability of solid electrolyte membranes by applying a slurry containing a mixture of UV-curable and heat-curable binders onto a substrate, followed by sequential primary UV curing and secondary thermal curing.
Conventional single-curing methods have limitations: UV-only curing often results in incomplete internal curing, while thermal-only curing leads to long processing times, thermal deformation, and cracking during molding. Furthermore, the use of solvents in slurries causes environmental pollution and adds unnecessary costs.
This technology involves mixing acrylate, epoxy, or thiol-based liquid UV-curable binders and epoxy, silicone, or isocyanate-based heat-curable binders with ion-conductive inorganic particles in a solvent-free state, followed by sequential curing under 100–450 nm UV light and 50–150°C heat. Applicable to roll-to-roll mass production lines for oxide, sulfide, and halide-based all-solid-state batteries, it enables the production of uniform, crack-free membranes while eliminating the need for drying processes and solvent recovery equipment.
This invention was developed with support from the Ministry of Economy and Finance for the development of manufacturing technology for solid electrolyte membranes with an ionic conductivity of 1 mS/cm or higher and a thickness of 30 μm or less.
This technology synthesizes LiMn0.5Fe0.5PO4 cathode material by controlling the mixing volume ratio of lithium, phosphoric acid, iron, and manganese precursor solutions, followed by heating and stirring from room temperature to a target temperature. A carbon layer is then applied to the particle surface to prevent memory effects and improve rate capability.
Conventional iron-based cathode materials (LFP) suffer from memory effects during charge-discharge cycles, leading to reduced discharge voltage and capacity. Furthermore, they face significant limitations in rate capability under high-power demand conditions.
This technology optimizes the relationship between charge transfer resistance and lithium diffusion resistance by maintaining the volume ratio of the iron-manganese precursor solution to the phosphoric acid precursor solution between 3.41:1 and 4.54:1, gradually heating and stirring from room temperature to 180°C, and applying a surface carbon layer using ascorbic acid and glucose to prevent iron oxidation. Applicable to LMFP batteries for EVs, high-power power tools, and phosphate-based ESS cells, it maintains rapid discharge performance without voltage drop even after repeated partial charging.
This invention was developed with support from the Ministry of Science and ICT for the discovery and investigation of new photoelectrochemical phenomena: controlling photoelectrochemical behavior through interface engineering.
This technology embeds micro-conduits or capsules containing self-healing monomers within the separator body and places catalysts on the surface. When a crack occurs, the monomer moves to the damaged area via capillary action or thermal melting, where it hardens through ring-opening metathesis polymerization (ROMP) to seal the gap.
Previously, if a separator was torn or cracked due to overcharging, over-discharging, or external impact, the anode and cathode could come into direct contact, causing a short circuit. Such short circuits posed a high risk of safety accidents, including battery overheating and explosions.
This technology incorporates a self-healing unit made of fluid thermoplastic elastomers, such as dicyclopentadiene (DCPD), and a Grubbs catalyst into the separator. When a crack occurs, the self-healing unit flows into the area to harden it; in the event of severe overheating, it shuts down the separator function to prevent overcurrent-induced explosions. It can be applied to pouch cells for electric vehicle battery packs, drones, and wearable devices subject to frequent vibration and impact, acting as a passive safety device that self-seals micro-damage before it can escalate into an internal short circuit.
This technology enhances the physical and chemical stability of cathode active materials by coating the surface of lithium transition metal composite oxide particles with boron compounds represented by the chemical formula MB2 (M=Ti, Cr, Zn, V).
Layered lithium-manganese oxides suffer from poor cycle performance due to structural instability, while high-capacity lithium-nickel oxides face issues with short cycle life and high reactivity with electrolytes. Consequently, it has been difficult to simultaneously achieve both long lifespan and high power output in cathode active materials.
This technology involves coating lithium composite oxide particles with 0.1 to 10 wt% of a boron compound, such as TiB2, followed by heat treatment at 100–500°C to modify the surface. It can be applied to high-nickel cathode materials for electric vehicle cells or high-power power tool batteries, contributing to battery designs that suppress electrolyte side reactions and minimize power degradation after repeated charge-discharge cycles.
This technology enables the electrochemical operation of calcium-ion batteries by utilizing AgxV2O5 (0 < x < 0.5) with a monoclinic crystal structure as a cathode active material, allowing for the reversible insertion and extraction of calcium ions.
Existing cathode active materials used for lithium-ion batteries struggle to reversibly accept and release divalent calcium ions. Consequently, when applied to calcium-ion batteries, they often face issues such as poor charge/discharge performance or complete failure to operate.
This technology secures a reversible intercalation pathway for calcium ions by using monoclinic crystalline AgxV2O5, obtained through mixing a silver precursor with vanadium oxide followed by hydrogen peroxide reaction and heat treatment, as the cathode active material. It can be applied to low-cost, calcium-based secondary batteries that replace lithium, as well as grid-connected storage facilities where resource supply stability is critical. A key advantage is the ability to produce calcium-driven cathodes through relatively simple wet synthesis and heat treatment.
This technology is a composite solid electrolyte that disperses specific zeolites—such as Y, Beta, and Mordenite—that have not been ion-exchanged with lithium into an ion-conductive polymer and lithium salt matrix. This prevents polymer crystallization and optimizes lithium-ion diffusion pathways and concentration through Lewis acid-base interactions.
Conventional solid electrolytes have been limited by room-temperature ionic conductivity levels of approximately 10^-5 S/cm, which restricts battery performance. Furthermore, when used with lithium metal anodes, they face issues such as lithium dendrite growth and electrode interface instability.
This technology involves mixing non-ion-exchanged zeolite nanoparticles containing sodium, hydrogen, or ammonium ions with ion-conductive polymers like PEO and lithium salts like LiTFSI. This configuration expands the amorphous regions of the polymer and increases lithium-ion concentration on the zeolite surface. As a result, it achieves ionic conductivity exceeding 4.5×10^-4 S/cm at room temperature. It can be applied to all-solid-state batteries using lithium metal anodes and thin-film batteries for electric vehicles and wearable devices that require reduced fire risks, supporting the design of polymer-based electrolytes capable of room-temperature operation without heating devices.
This technology is an electrode composition for calcium-ion batteries that uses rhombohedral NASICON-structured NaV2(PO4)3 as a cathode active material, allowing calcium ions (Ca2+) to be reversibly inserted into and extracted from the sites vacated by sodium ions.
Existing cathode materials developed for lithium-ion batteries, such as V2O5, MoO3, and Mo6S8, have struggled with the reversible insertion and extraction of divalent calcium ions. Consequently, applying these materials directly to calcium-ion batteries often results in either the inability to charge and discharge or significantly degraded performance.
This technology involves synthesizing Na3V2(PO4)3 first, then removing a portion of the sodium ions through electrochemical or chemical oxidation to convert it into NaV2(PO4)3, thereby pre-securing active sites for calcium ion transport. It can be applied to next-generation multivalent-ion batteries aimed at reducing reliance on lithium resources and to cathode materials for large-capacity stationary energy storage systems, providing a pathway for developing batteries that utilize abundant and inexpensive calcium as a charge carrier.
This technology involves coating or embedding a composite of aluminum oxide (Al2O3) and the radical scavenger tris(2,4,6-trimethylphenyl)phosphine (TMPP) onto the surface of a lithium secondary battery separator to chemically remove harmful radicals generated by electrolyte decomposition and enhance electrode interface stability.
Using high-energy-density electrodes like NCM811 often leads to the formation of unstable radical intermediates during electrolyte decomposition, which accelerate chain reactions within the battery and degrade cycling performance.
This technology is configured by synthesizing a composite through the condensation reaction of hydroxyl groups (-OH) on Al2O3 with TMPP, then applying it to a polyethylene (PE) separator surface via dip coating. The low-oxidation-state phosphorus (P) atoms scavenge radicals, while Al2O3 improves surface hydrophilicity, enhancing electrolyte wettability and ionic conductivity. It can be applied by separator manufacturers using existing PE coating lines or in power tool and EV batteries requiring longer life for high-nickel cathodes, effectively breaking the chain of side reactions at the separator level without altering electrolyte composition.
