This technology forms a coating layer containing a composite of nano-sized zirconium oxide (ZrO2) and the free radical scavenger tri-1-naphthylphosphine (TNP) to seal the large pores of polyimide (PI) separators and ensure safety.
While polyimide separators offer excellent thermal stability, their inherent porous structure often fails to sufficiently separate the anode and cathode during battery assembly, leading to internal short circuits and current leakage.
This technology involves dispersing ZrO2 and TNP in a PVdF-HFP binder solution and applying it to the PI separator surface via dip-coating to seal the pores. By coating at least 6.44 mg/cm² of the ZrO2-TNP composite, it prevents internal shorts, while the radical scavenging function of TNP enhances thermal properties at high temperatures. It can be applied to NCM811-based high-nickel EV batteries or energy storage cells exposed to high heat, fundamentally reducing the risk of internal shorts that could lead to thermal runaway.
This technology utilizes a ternary composite ionic structure—comprising a lithium or sodium salt, a plasticizer such as TEGDME or PEGDME, and an ionic liquid like EMIM-TFSI in a 0.9–1.1 : 0.9–1.1 : 0.9–1.1 molar ratio—combined with a UV-curable polymer to create a gel polymer electrolyte with a nano-canyon surface structure that offers both high electrical performance and mechanical stability.
Conventional solid-state polymer electrolytes suffer from low ionic conductivity. Conversely, gel polymer electrolytes have historically been limited by poor mechanical and environmental stability, leading to performance degradation under high-temperature operation or physical deformation.
This technology involves mixing and polymerizing a composite ionic structure (consisting of alkali salt, plasticizer, and ionic liquid in a 1:1:1 molar ratio) at 65–75 wt% with a UV-curable monomer to form a gel electrolyte with high ion dispersion and a nano-canyon surface structure 50–200 nm wide. Applicable to lithium and sodium-ion batteries, flexible pouch cells, and high-temperature power modules, it eliminates leakage risks while ensuring a large interfacial contact area and rapid ion transport paths.
This technology optimizes the formation rate and uniformity of primary particles, the level of nickel/lithium cation mixing within the crystal structure, and overall structural stability during heat treatment by controlling the size of cathode active material precursor particles.
Conventional cathode active materials have suffered from structural instability, poor rate capability, and degraded cycle life over repeated charge-discharge cycles. Furthermore, inconsistent precursor sizes have limited particle density and crystallinity.
This technology regulates nickel precursor particle size between 8μm and 16μm, while optimizing oxygen partial pressure (0.3–1.0 L/min) and the lithium source molar ratio (1:1.01–1.05) to achieve a layered structure with an I003/I104 peak ratio exceeding 1.74. Applicable to high-nickel NCM/NCA mass production lines, high-capacity EV cells, and co-precipitation reactor design, it allows for pre-designing crystal quality post-calcination simply by adjusting precursor-stage variables like stirring speed.
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 forms a thin, ion-conductive polymer protective layer (artificial SEI) on a lithium anode by directly applying a liquid cross-linkable monomer to the surface and inducing polymerization through light or heat.
When lithium metal is used as an anode, volume changes during charging and discharging cause the solid electrolyte interphase (SEI) to collapse. This leads to continuous electrolyte decomposition and the growth of dendrites, which reduces battery stability and lifespan.
This technology involves applying a liquid cross-linkable monomer, such as fluorine-containing PEGDA, to the lithium surface and polymerizing it using heat (60–200°C) or 365 nm light. This process simultaneously creates a LiF layer through reaction with the lithium and forms a polymer film. Applicable to anode protection processes for high-energy lithium metal batteries and lightweight, high-capacity cells for drones and UAMs, it suppresses internal resistance increases and delays dendrite formation through simple application and curing, without the need for specialized coating equipment.
This technology enhances the energy density and ionic conductivity of all-solid-state batteries by implementing an interdigitated structure. It features 3D-printed pillar or tubular protrusions on two current collectors that face each other, encapsulated by a solid electrolyte.
Conventional all-solid-state batteries suffer from low ionic conductivity in the solid electrolyte and uneven contact between the electrode and electrolyte, leading to high resistance and actual capacities significantly lower than theoretical limits. Thin-film structures also face inherent limitations in increasing energy density.
This technology utilizes 3D printing to create two active material structures with tubular protrusions 10–100 µm thick, arranged to interlock alternately in the width direction. This maximizes the interfacial area and shortens the lithium-ion diffusion path. Applicable to next-generation electric vehicle all-solid-state cells and micro-batteries for small IoT devices, it increases capacity per unit area through 3D electrodes within a small footprint and reduces interfacial impedance.
This technology involves the synthesis of a novel (NH4)2V7O16 vanadium bronze material with a triclinic (P-1) crystal structure, which is used as a cathode active material for lithium or sodium-ion batteries to improve ion intercalation and diffusion characteristics.
Existing (NH4)2V7O16 materials have been difficult to analyze in terms of crystal structure. In particular, sodium-ion batteries have faced limitations in achieving structural stability and cycle life due to the larger ionic volume and lower electrode potential of sodium compared to lithium.
This technology utilizes a hydrothermal synthesis method reacting NH4VO3 with LiBH4 to produce a novel triclinic (NH4)2V7O16 with lattice parameters of a=6.1480Å, b=6.1434Å, and c=18.0309Å, which is then formulated as an electrode active material by mixing it with conductive agents and binders in an 8:1:1 ratio. It can be applied to the development of next-generation sodium-ion energy storage systems and lithium-ion battery cathodes, allowing for the use of a single material for both battery systems while reducing dependence on lithium resources.
This technology involves placing a siloxane-based or fluorine-based elastic polymer film between the bottom of the coin cell case and the lithium metal electrode. This design evenly distributes physical pressure within the cell and accommodates volume changes in the electrode.
During coin cell manufacturing, uneven internal pressure often occurs due to deformation of the metal casing, misalignment of components, and electrode volume changes. These pressure variations promote the non-uniform growth of lithium dendrites, leading to performance inconsistencies between cells and reduced reproducibility.
This technology utilizes a siloxane-based or fluorine-based elastic polymer film with an elastic modulus of 0.5–5 MPa inserted at the base of the coin cell. Electrical conductivity is maintained by forming metal strips on the film surface, and interfacial adhesion can be enhanced through plasma treatment if necessary. This solution is ideal for standard half-cell testing in lithium metal anode research labs and battery evaluation facilities, as it reduces data variance between cells and improves the reliability of material comparisons.
This technology maximizes the dispersibility of inorganic additives, such as zeolites, within polymer matrices like PEO and enhances ionic conductivity by modifying the surface of the additives with an acrylic polymer containing polysiloxane side chains.
Conventional composite solid electrolytes suffer from poor interfacial affinity between inorganic additives and polymers, leading to inorganic aggregation and reduced lithium-ion conductivity. This results in increased interfacial resistance and dendrite growth, which compromises battery stability.
This technology uses an acrylic polymer with hydroxyl-functionalized (-OH) polysiloxane side chains to convert the hydrophilic surfaces of inorganic additives, such as CHA-structured SSZ-13 zeolite, into hydrophobic surfaces. This ensures uniform dispersion within the polymer and promotes lithium-ion adsorption and dissociation through nanopores. It is ideal for polymer-based all-solid-state batteries and flexible wearable power sources, facilitating the production of thin, homogeneous electrolyte membranes without the aggregation typically caused by inorganic fillers.
This technology involves coating the surface of a polyimide (PI) separator with a composite of nano-sized aluminum oxide (Al2O3) and the free radical scavenger ethylene bis(diphenylphosphine) (EPP) to close large pores and ensure safety.
While conventional polyimide (PI) separators offer excellent heat resistance, their macroscopic porous structure often fails to sufficiently separate the anode and cathode during cell assembly, leading to internal short circuits and current leakage.
This technology involves dispersing Al2O3 and EPP in a PVdF-HFP binder solution and dip-coating it at a loading of 2.8 mg/cm² or more to seal the pores on the polyimide separator surface. EPP scavenges free radicals to enhance thermal stability and electrochemical performance, maintaining lower shrinkage at 550°C compared to Al2O3-only coatings. Applicable to EV, electric ship, and military batteries requiring extreme high-temperature safety, it preserves separator integrity during rapid temperature spikes, reducing the risk of chain ignition.
This technology introduces triallyl borate (TAB) as an electrolyte additive to form a borate-based Cathode-Electrolyte Interphase (CEI) layer on the cathode surface via electrochemical oxidation. Simultaneously, it chemically removes fluorine (F-) species from the electrolyte, enhancing the thermal and chemical stability of the cathode.
Nickel-rich layered oxide (LiNi0.83Co0.07Mn0.10O2) cathodes are highly reactive, leading to accelerated electrolyte decomposition during high-temperature cycling. This, combined with irreversible transition metal dissolution and surface side reactions, has historically limited cell lifespan.
This technology incorporates 0.1–2.0 wt% of TAB into the electrolyte to form a stable CEI layer on the cathode. The allyl functional groups of TAB undergo electrochemical decomposition to form the CEI, while the borate groups scavenge fluorine ions to suppress interfacial side reactions, improving high-temperature cycle performance. Suitable for EV/HEV cells using graphite anodes and NCM83 cathodes, as well as outdoor ESS exposed to summer heat, this single additive simplifies formulation by simultaneously enabling film formation and HF removal.
This technology improves the efficiency, capacity, and lifespan of secondary batteries by treating the surface of a metal substrate, such as zinc, with a mixed solution containing sulfur (S) and fluorine (F) sources to create a passivation layer containing amorphous ZnS and ZnF, which induces the formation of an SEI layer.
Secondary batteries, particularly metal-air batteries, have historically suffered from low charge-discharge efficiency and poor stability. Furthermore, they have been limited by the unstable formation of the SEI layer on the electrode surface, which leads to rapid performance degradation.
This technology involves modifying the surface of a metal substrate by immersing it in a reaction solution containing a Me3EtNOTF decomposition initiator and zinc salts such as Zn(OTF)2, Zn(TFSI)2, or Zn(FSI). If necessary, recesses can be formed on the surface via wet processing or imprinting to adjust flexibility and mechanical properties. Applicable to zinc-air batteries, aqueous zinc-ion batteries, and portable power sources requiring flexible electrodes, this method allows for the creation of an anode with a stable interfacial protective layer simply through immersion, without the need for separate coating equipment.
This invention was developed with support from the Ministry of Science and ICT for the development of a high-energy-density soft materials platform through the design of new organic superionic plastic crystal materials.
This technology is a solid electrolyte that enhances both ionic conductivity and mechanical stability by cross-linking TEMPO-oxidized fibers with nitrogen-functionalized fibers, utilizing a base fiber composed of bacterial cellulose (BC) combined with chitosan.
Conventional electrolytes for metal-air batteries suffer from low ionic conductivity, short lifespans, and dendrite growth. They are particularly limited by mechanical instability in flexible environments.
This technology consists of a network-structured membrane formed by mixing and cross-linking, at a 30–70 wt% ratio, fibers surface-oxidized with TEMPO to facilitate OH- ion transport and fibers functionalized with quaternary nitrogen groups to improve thermal stability and ion-exchange capacity. Applicable to zinc-air batteries, flexible power sources for wearables, and eco-friendly disposable sensor power, it reduces the risk of electrolyte membrane tearing or dendrite penetration even under repeated bending.
This invention was developed with support from the Ministry of Science and ICT for the development of a high-energy-density soft materials platform through the design of new organic superionic plastic crystal materials.
This technology is an anisotropic conductive film featuring copper particles surface-modified with hexoxy groups dispersed within an acrylic polymer matrix. It enables electrical connection through simple contact without the need for heat or pressure, and can be easily detached, thereby enhancing battery reusability.
Conventional epoxy-type anisotropic conductive films suffer from low process efficiency due to the mandatory requirement for high reaction temperatures and pressure-based processes. Furthermore, their low glass transition temperature makes it difficult to ensure long-term connection reliability and complicates battery disassembly and recycling.
This technology utilizes an acrylic polymer synthesized from 2-EHA and MMA monomers, a TTEGDA crosslinker, a benzoyl peroxide initiator, and an MEHQ polymerization inhibitor. By dispersing micro/nano copper particles modified with hexoxy groups, the film excludes hydrophilic groups, providing corrosion resistance while allowing for the adjustment of tackiness and tensile strength. It can be applied to electrical bonding between cells in battery modules and to remanufacturing processes for used batteries, significantly reducing costs for cell-level replacement by enabling repeated assembly and disassembly without the need for thermal compression equipment.
This technology synthesizes an inverse-fluorite structured lithium transition metal oxide cathode material by mixing lithium, iron, and manganese sources in a 5+x:x:1-x molar ratio, pelletizing the mixture, and calcining it in a nitrogen-hydrogen (95:5) atmosphere while heating at a rate of 9–11°C/min.
Conventional lithium-manganese oxides suffer from low electrochemical reactivity and unstable crystal structures. Furthermore, the synthesis process often leads to the formation of byproducts like Li2MnO3, which reduces the yield of the target phase.
This technology enhances electrochemical performance by doping iron into the manganese site. By heat-treating the material in pellet form while injecting a 95:5 nitrogen-hydrogen gas mixture at 3–5 cc/min, it suppresses byproduct formation and allows for the control of orthorhombic or tetragonal structures based on the x-value. It can be applied as a cathode additive to compensate for initial irreversible capacity or used in high-capacity lithium secondary battery cathodes, making it an attractive option for cell manufacturers looking to secure additional lithium sources through cost-effective iron-manganese combinations.
This technology utilizes a lithium-containing silicon-based oxide (Li8-xSi1-yMyO6-z) as a cathode additive. It effectively compensates for the initial irreversible capacity of the anode by releasing lithium ions through an oxygen ion oxidation mechanism during the initial charge.
Silicon-based anode active materials suffer from high initial irreversible capacity, which reduces the overall energy density of the cell. Existing pre-lithiation processes intended to solve this issue are limited by high fire risks, increased costs, and process complexity.
This technology introduces a lithium silicon-based oxide with a hexagonal crystal structure (space group P63cm) as a cathode additive. It smoothly supplies lithium to the anode during the first charge to offset initial irreversible capacity, while maintaining stable, high-capacity characteristics in subsequent cycles due to low reactivity. Applicable to high-energy electric vehicle cells and small IT device batteries that use silicon anodes, it allows for the compensation of initial efficiency losses using only existing cathode coating lines, eliminating the need for hazardous pre-lithiation equipment.
