This technology is a secondary battery separator that combines polymers containing polar functional groups with an aramid nanofiber framework that encapsulates them in a 3D lattice structure. It achieves an ultra-porous structure of over 95% and enhances affinity with electrolytes.
Conventional polyolefin separators have limited energy density due to low porosity and poor electrolyte wettability. In particular, they pose risks of short circuits caused by dendrite growth and thermal runaway when operating lithium metal batteries.
This technology involves coating a mixture of a polymer suspension and aramid nanoseeds, followed by a swelling process through protic solvent exchange and immersion in water to produce a composite membrane with macropores 140–700 nm in diameter. The polar functional groups of the polymer regulate electrolyte wettability and induce the formation of a stable fluorine-based SEI layer, which suppresses dendrite growth. Applicable as a separator for high-energy batteries using lithium metal anodes and high-power power tool cells, it reduces electrolyte impregnation time and minimizes short-circuit risks from high-temperature shrinkage thanks to its heat-resistant skeleton.
This invention was developed with support from the Ministry of Science and ICT for the development of 3D nano-skeleton materials applicable to negative electrodes and solid-electrolyte-interphase layers of lithium metal batteries, and in-depth research on suppressing dendrite formation.
This technology converts battery data into patterned images and inputs them into a Bayesian Convolutional Autoencoder (BCAE) that utilizes Laplace and Student's t-mixture distributions as priors to generate a Virtual Health Index (VHI) with quantified uncertainty. The resulting index is then used for unsupervised clustering to detect abnormal degradation.
Conventional threshold-based or simple deep learning methods require large amounts of labeled data. These approaches often underperform in data-constrained environments and struggle to model complex degradation patterns and data uncertainty, making it difficult to identify early-stage abnormal degradation.
This technology optimizes Bayesian autoencoder network parameters using a modified Bayes by Backprop algorithm that integrates Monte Carlo sampling with a Gumbel-Softmax module. By precisely modeling diverse degradation patterns through mixture distributions, it generates a VHI even with limited labels and automatically identifies anomalies via clustering methods like GMM or DBSCAN. It can be applied to EV fleet management servers, battery cell inspection, and second-life battery grading systems, enabling early detection of defective cells without the cost of labeling.
This invention was developed with support from the Ministry of Trade, Industry and Energy’s project for the development and demonstration of a microgrid platform for energy conversion of industrial complex waste resources.
This technology involves wet-mixing a sulfur composite—created by impregnating sulfur into a conductive carbon carrier coated with transition metal sulfides—with a sulfide-based solid electrolyte using a polar solvent with a polarity index of 3–5 (e.g., isopropyl acetate). This forms a polysulfido-intermediate compound (P-IC) at the interface, maximizing contact area and interfacial bonding strength between particles.
Conventional dry mixing or the use of non-polar solvents often results in poor uniformity between sulfur and the solid electrolyte. This leads to high internal resistance due to poor interfacial contact and the formation of voids, which limits ionic conductivity and reduces battery capacity.
This technology induces an interfacial chemical reaction by wet-mixing the sulfur composite and sulfide-based solid electrolyte in a polar solvent with a polarity index of 3–5. The resulting polysulfido-intermediate compound (3Li+-PS4+n3-) increases interfacial bonding strength to over 0.15N and minimizes voids, securing ion conduction channels within the electrode. Applicable to all-solid-state lithium-sulfur battery cathode manufacturing for drones, UAM, and lightweight EVs, it enhances sulfur utilization and increases capacity per unit weight.
This invention was developed with support from the Energy Innovation Research Center for Carbon Neutrality Workforce Development, funded by the Ministry of Trade, Industry and Energy.
This technology involves coating the surface of active materials, such as LiMn2O4, in aqueous lithium-ion batteries with metal fluorides or oxides like AlF3. This blocks side reactions between the electrolyte and the active material, preventing surface degradation and Mn ion dissolution.
Aqueous lithium-ion batteries have historically faced issues with rapid surface degradation of active materials due to the electrochemical instability of the electrolyte. In particular, LiMn2O4 has been limited by reduced cycle life and power performance caused by irreversible phase transitions and Mn ion dissolution.
This technology applies a uniform coating of AlF3, a metal fluoride, at 0.001–10 wt% of the cathode active material (optimally 2 wt% for LiMn2O4), suppressing side reactions in aqueous environments while maintaining the lithium-ion insertion/extraction structure. Suitable for indoor emergency power systems requiring low fire risk or hybrid capacitor-type storage devices using activated carbon anodes, it demonstrates durability with a capacity retention of approximately 90% after 100 cycles at 1C.
This technology utilizes TMSPO, which contains both phosphate and silyl functional groups, as an electrolyte additive. It enhances interface stability by forming a protective CEI layer on the high-Ni NCM cathode surface and removing fluorine-based substances that trigger transition metal dissolution.
High-Ni NCM cathode materials have historically suffered from interface instability during high-temperature charging and discharging, leading to continuous electrolyte side reactions. This results in transition metal dissolution and a significant decline in cycle life.
This technology involves adding 2 wt% of TMSPO to the electrolyte and performing an initial formation process at 25°C to create a dense, uniform CEI layer on the cathode surface. Applicable to NCM811-based long-range EV cells and power tool batteries prone to high-temperature operation, it provides the basis for electrolyte design in high-nickel cells that retain 82% capacity after 50 cycles at 60°C.
This technology involves dispersing gallium-based liquid metal into spherical shapes using a surfactant in a non-polar solvent, then mixing it with zinc particles to form a composite structure where the liquid metal protective layer encapsulates the zinc particles, thereby suppressing dendrite growth and side reactions in zinc electrodes.
Aqueous zinc battery anodes have historically faced issues with zinc dendrite growth and corrosion during charge-discharge cycles. Furthermore, reactions with the aqueous electrolyte trigger hydrogen evolution reactions (HER), which shorten battery life and cause short circuits.
This technology utilizes a capillary suspension method, employing both non-polar and polar solvents to uniformly form a 40–100 nm thick liquid metal protective layer on the surface of zinc particles. This layer maintains an electrical conduction network while inducing specific crystal plane growth in zinc to suppress dendrites and preventing corrosion by blocking direct contact with the electrolyte. It can be applied to aqueous zinc batteries for stationary energy storage systems in buildings—where low fire risk is essential—or wearable devices, reducing concerns over cell expansion from hydrogen gas and extending service life.
This invention was developed with support from the Ministry of Science and ICT for a single-ion conductor-based multidimensional free-form power system.
This technology forms a gel polymer electrolyte protective layer on the surface of a lithium metal anode by polymerizing a mixture of monomers, a liquid electrolyte containing lithium salt, and inorganic particles. This reduces interfacial resistance with the solid electrolyte and suppresses chemical reactions.
Sulfide-based solid electrolytes are highly reactive with lithium metal, often leading to decomposition or significant interfacial resistance. The formation of voids at the interface can also trigger lithium dendrite growth and crack propagation, which limits the safety and lifespan of the battery.
This technology involves mixing monomers such as ETPTA and a liquid electrolyte containing dissolved lithium salt with inorganic particles like ZnO, applying the mixture to the lithium metal surface, and performing photo- or thermal polymerization to create a uniform protective layer. This layer increases the lithium-ion diffusion coefficient and significantly enhances electrode-electrolyte interface stability. Applicable to sulfide-based all-solid-state batteries using lithium metal anodes and high-energy-density devices in telecommunications, transportation, and energy storage, it maintains interfacial contact and reduces the risk of cell short-circuits with a film thickness of less than 1 ㎛.
This invention was developed with support from the Ministry of Science and ICT for a single-ion conductor-based multidimensional free-form power system.
This technology introduces a kosmotropic anion-containing aqueous electrolyte into the slurry composition to reduce the activity of water molecules, thereby suppressing side reactions between the cathode active material and water molecules during aqueous processing.
Aqueous processing typically triggers side reactions between water and cathode active materials—particularly high-nickel materials—leading to instability and increased pH. This often results in current collector corrosion, which degrades battery performance and cycle life.
This technology ensures interfacial stability in aqueous slurries by adding metal salts—composed of kosmotropic anions such as SO4^2-, TFA-, Cl-, BF4-, and PO4^3-, and cations such as Li+, Na+, and Mg^2+—at a concentration of 0.1 to 2.0 M. It is ideal for eco-friendly cathode coating lines aiming to eliminate NMP organic solvents or for transitioning high-nickel cathodes to aqueous processes, effectively reducing both solvent recovery costs and VOC emissions.
This invention was developed with support from the Ministry of Science and ICT for the Single-Ion Conductor-Based Multidimensional Free-Form Power System project.
This technology orients the primary particles that form the secondary particles of a cathode active material for all-solid-state batteries into a radial rod-shaped structure extending from the center to the surface. This secures lithium-ion diffusion paths and suppresses microcracks caused by volume changes, thereby enhancing interface stability with the solid electrolyte.
Conventional cathode active materials for all-solid-state batteries suffer from randomly oriented primary particles, which lead to microcracks due to anisotropic volume changes during charging and discharging. This results in increased interface resistance with the solid electrolyte and hinders smooth lithium-ion diffusion into the secondary particles, ultimately degrading cycle life and electrochemical performance.
This technology arranges the primary particles on the surface of the secondary particles in a rod shape with their long axes pointing toward the center, and optimizes lithium-ion diffusion paths by increasing the a-axis/c-axis length ratio from the center to the surface. Additionally, a nickel concentration gradient—lower at the surface and higher at the center—is applied to reduce side reactions with the solid electrolyte while maintaining capacity. Applicable to high-nickel cathodes in next-generation all-solid-state cells using sulfide, halide, or oxide electrolytes, it delays contact loss at the solid-solid interface and is advantageous for long-term cycle capacity retention.
This technology features a cathode active material based on a vanadium oxide (V2O5) layered structure, where a portion of the potassium (K) sites are substituted with electrochemically inert strontium (Sr). This ensures structural stability during charge and discharge cycles while improving ion transport rates and lifespan.
Due to the large ionic radius of potassium, the insertion and extraction processes place significant stress on the crystal structure. Furthermore, the wide interlayer spacing leads to severe side reactions with the electrolyte, and the collapse of the crystal structure during long-term cycling has historically limited both lifespan and capacity.
This technology forms strong Sr-O bonds by substituting a portion of the potassium in the K-V-O layered structure with strontium at a K:Sr atomic ratio of 2–15:1. Using a hydrothermal synthesis method, we produce nanoparticles with an average size of 200–800 nm, enhancing both electrochemical and mechanical properties. Applicable to potassium-ion battery and low-cost energy storage system production lines, this material reduces reliance on lithium resources and maintains a stable layered framework even under high-voltage conditions exceeding 4.2V.
This invention was developed with support from the Ministry of Science and ICT for the development of high-voltage layered cathode materials for high-energy-density potassium-ion batteries.
This technology pre-trains AI models, such as the DeepONet architecture, using virtual datasets generated by a multi-physics computational model consisting of state estimation, thermodynamics, chemical reaction, and pressure estimation models. The trained model receives real-time battery temperature and cooling performance data to predict internal states, such as SEI concentration and electrode concentration, as well as the likelihood of thermal runaway.
Predicting thermal runaway in secondary batteries has historically been difficult in real-time due to the complex chemical and physical calculations required. Furthermore, training models with actual experimental data is time-consuming, costly, and limited by the availability of data.
This technology generates virtual datasets by inputting thermal curves derived from virtual scenarios into a multi-physics computational model, which are then used to pre-train AI algorithms. During operation, it quickly infers thermal runaway status and probability by inputting measured battery surface temperature, coolant temperature, flow rate, and convection coefficients. Applicable to EV battery packs, large-scale ESS containers, and battery safety monitoring platforms, it enables early thermal runaway warnings and proactive cooling system activation without the need for expensive thermal abuse testing.
This invention was developed with support from the Ministry of Science and ICT for the development of impedance management and lifespan enhancement technology for electric vehicle lithium-ion batteries using low- and high-frequency synthetic surface pressure excitation.
This technology improves aqueous lithium-ion batteries using olivine-type cathode materials like LiFePO4. By adding 10–20 wt% ethylene glycol (EtG) to the aqueous electrolyte, it lowers the freezing point and maintains ionic conductivity, effectively suppressing electrode polarization and surface resistance at sub-zero temperatures.
Aqueous electrolytes typically suffer from high freezing points, leading to a sharp drop in ionic conductivity in sub-zero environments. This increases electrode resistance and polarization in LiFePO4 cathodes, significantly degrading cycle performance and rate capability.
This technology optimizes the aqueous electrolyte by adding 10–20 wt% of ethylene glycol to a 1M Li2SO4 solution. This extends the operating temperature range below freezing and enhances lithium-ion transport and intercalation/deintercalation kinetics at low temperatures. Suitable for outdoor solar energy storage and backup power for base stations in cold climates, it maintains a discharge capacity of over 90 mAh g-1 after 100 cycles at -10℃.
This technology forms a metal fluoride (MeFx) coating layer, such as AlF3, on the surface of LiV3O8 anode active materials. This ensures structural stability in aqueous electrolytes, suppresses vanadium ion dissolution and side reactions, and improves ionic conductivity.
When using aqueous electrolytes, LiV3O8 anodes suffer from low electronic conductivity and irreversible structural changes during charge and discharge. Furthermore, the dissolution of vanadium ions into the electrolyte and the accumulation of side-reaction products lead to poor cycle performance and rapid capacity degradation.
This technology applies an AlF3 coating to the surface of LiV3O8 particles, maintaining a coating amount of 0.1–3 wt% through drying at 130–140°C and calcination in an argon atmosphere at 300–500°C to block direct contact with the electrolyte. Applicable to non-flammable aqueous batteries for home and industrial storage and safety-critical wearable power sources, it expands options for low-cost, long-lasting aqueous battery anode design without organic electrolytes.
This technology recovers high-purity copper sheets from waste electrodes—where carbon sheets are attached to both sides of a copper sheet—by using ultrasonic waves of a specific intensity in an acid solution to induce physical delamination without chemical leaching.
Conventional methods for recovering copper sheets from waste electrodes required leaching in strong acid solutions or complex neutralization processes. These methods often left impurities on the copper sheets or damaged the copper itself, resulting in low recycling efficiency and the need for additional purification steps.
This technology involves immersing waste electrodes in an acid solution (10–30% concentration, pH 2–3) and applying 200–300W ultrasonic waves for 10–30 minutes to physically detach the carbon sheets, followed by simple washing and room-temperature drying. Applicable to waste battery anode recycling plants and electrode manufacturing defect recovery lines, it secures current collector materials ready for immediate reuse without damaging the copper, while reducing the burden of waste acid neutralization.
This invention was developed with support from the Ministry of Knowledge Economy for the development of resource recycling technology for difficult-to-separate metal/polymer composite materials.
This technology uses an atomic layer deposition (ALD) process to uniformly form a 0.1–10nm thick metal oxide thin film on the surface of solid electrolyte powder for lithium secondary batteries. By utilizing periodic reactor rotation, stirring beads, and an injection induction pumping sequence, it prevents particle agglomeration and maximizes coating uniformity.
Conventional coating methods, such as the sol-gel process, struggle to control coating thickness and are prone to particle agglomeration and uneven coating. These limitations often result in reduced ionic conductivity and an inability to sufficiently suppress chemical side reactions at the electrode-electrolyte interface.
This technology features a rotatable reactor within a vacuum chamber where beads and powder are agitated together. It repeats the ALD cycle—consisting of coating source supply, purge, oxidant supply, and purge—while using injection induction pumping after each supply phase to prevent precursor backflow and precisely control hold, purge, and pumping times. Applicable to mass production of all-solid-state batteries using oxide-based solid electrolytes like garnet-type LLZO and powder surface modification equipment, it ensures uniform coating quality across the entire powder while suppressing interfacial side reactions with a nanometer-scale protective layer.
This invention was developed with support from the Ministry of Science, ICT and Future Planning's Research Center for Innovative Construction Structures.
