This technology features a hybrid structure that replaces the interlayer dielectric of 3D vertical memory devices with a solid-state electrolyte-based secondary battery, enabling simultaneous information and energy storage within the same device volume.
In conventional 3D vertical memory, dielectric layers are essential to prevent interference between memory cells, but they serve no purpose other than protection. This results in inefficient use of space within the device.
This technology incorporates an a-Si anode and LiCoO2 cathode into the dielectric structure to provide solid-state battery functionality, combining it with vertical memory like ReRAM to utilize internal space for energy storage. It is ideal for power-constrained IoT sensor nodes, implantable medical devices, and ultra-compact wearable chips, enabling designs that handle both data retention and self-powering on a single chip without a separate battery.
This technology is a cell balancing method that adds a capacitor in parallel to both ends of the battery unit and allows the control unit to manage PWM and unidirectional switches, reducing the peak cell discharge current while maintaining energy transfer efficiency.
Conventional single-inductor cell balancing circuits suffer from high discharge current peaks, which can degrade battery State of Health (SOH). Increasing inductance to mitigate this leads to space constraints, while raising the switching frequency increases switching losses.
This technology configures the circuit by connecting a capacitor in parallel with the battery unit and inductor, and applies control logic to identify the cell with the lowest SOC, selectively transferring energy only to that cell. This reduces the peak discharge current at the same transfer efficiency. It can be applied to BMS for EV packs with many series cells, uninterruptible power supplies, and battery management boards for electric mobility, extending pack life by reducing cell-to-cell deviation without relying on large inductors or high-frequency switching.
This technology is a surface modification method that applies a poly(4-vinylphenol) (PVP) organic polymer layer onto the surface of a finished NCM-613 cathode via spin coating and cross-linking, preventing crystal structure degradation and suppressing side reactions with the electrolyte.
Operating Ni-rich layered NCM-613 cathode materials at high voltages above 4.3V has historically led to irreversible crystal structure collapse. Furthermore, electrolyte decomposition causes severe surface polarization, limiting long-term cycle life and rate performance.
This technology involves spin-coating a PVP solution mixed with a cross-linking agent (HMBG) onto the finished cathode surface to create a protective layer 0.05–10㎛ thick, which is then cured at 130℃. Since it adds only one post-processing step to existing electrode coating lines, it can be applied to high-voltage small electronic cells and high-energy-density EV cells, boosting lifespan at the electrode level without changing the active material synthesis recipe.
This technology improves cathode interfacial stability by wet-coating the surface of high-nickel cathode active materials with N,N-dimethylpyrrolidinium methyl sulfate, followed by heat treatment to form a sulfonate-based artificial CEI layer that suppresses electrolyte decomposition.
High-capacity high-nickel NCM cathode active materials are highly reactive, leading to rapid side reactions with the electrolyte. The resulting decomposition products increase interfacial resistance, which severely degrades cycle performance and causes swelling.
This technology involves synthesizing the amphiphilic organic precursor N,N-dimethylpyrrolidinium methyl sulfate, wet-coating it onto the cathode surface at 1–10 wt%, and heat-treating it at 550–650℃ under atmospheric pressure to immobilize the sulfonate-based artificial CEI layer. Applicable to post-processing for NCM811 powder suppliers or high-energy-density EV cell manufacturing, it achieves superior performance metrics, including 97.4% capacity retention and 99.8% average Coulombic efficiency after 50 cycles.
This technology forms a spinel-structured CuCoO2 film on the surface of lithium cobalt oxide (LiCoO2) particles without high-temperature heat treatment by dispersing and stirring the particles in a copper nitrate (Cu(NO3)2) aqueous solution to replace surface lithium with copper ions.
When operated at high voltages, LiCoO2 suffers from structural collapse and accelerated side reactions with the electrolyte, leading to a shortened lifespan. Conventional inorganic coatings used to prevent this require high-temperature heat treatment above 700°C, which limits process cost and energy efficiency.
This technology suppresses electrochemical side reactions by forming a 3–4 nm thin CuCoO2 or CuO coating layer on the LiCoO2 surface through simple room-temperature stirring. It can be applied to mass production lines for smartphone and laptop LCO cells requiring high-voltage operation, offering an economical solution by adding a surface modification process using only an aqueous reaction tank, without the need for additional firing furnaces.
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 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.
This technology enhances battery lifespan and high-temperature stability by adding tris(trimethylsilyl) phosphite (TMSP) to lithium-ion battery electrolytes, creating a stable SEI layer containing phosphorus (P) and silicon (Si) on the graphite anode surface through electrochemical reduction and chemical reaction pathways.
Conventional electrolyte additives like VC often suffer from poor compatibility with high-capacity cathode materials, leading to reduced cycle life and swelling at high temperatures. Furthermore, the non-uniform formation of the SEI layer has historically caused continuous electrolyte decomposition.
This technology utilizes 3 wt% TMSP relative to the total electrolyte weight, combined with an ethylene carbonate (EC) and ethyl methyl carbonate (EMC) mixed organic solvent, to form a chemically modified SEI layer on the anode surface that exhibits specific peaks in XPS and 31P-NMR analysis. This electrolyte is suitable for EV pouch cells using graphite anodes and energy storage system cells exposed to high-temperature environments, offering a specific capacity retention of over 95% after 50 cycles.
This technology features a conductive polymer binder that enhances binding strength with silicon nanoparticles by copolymerizing anthranilic acid, which contains polar functional groups (-COOH), into an aniline backbone. It effectively accommodates the volume expansion of silicon anodes.
Silicon anode active materials suffer from electrode detachment due to rapid volume changes of 300–400% during charge and discharge cycles. Conventional binders like PVdF lack sufficient physical interaction with silicon, leading to rapid degradation in battery life and efficiency.
This technology utilizes a PAAA (Poly(aniline-co-anthranilic acid)) copolymer, synthesized with a molar ratio of aniline to anthranilic acid between 0.45:0.55 and 0.55:0.45, as a binder. The -COOH functional groups form hydrogen bonds with the silicon surface (SiO2, Si-OH) and the current collector, strengthening adhesion and increasing lithium-ion conductivity to mitigate mechanical stress from volume expansion. Applicable to high-capacity lithium secondary batteries using silicon nanoparticle anodes and conductive binder material businesses, the simple polymerization process, completed within hours at room temperature, also reduces material production costs.
This technology involves heat-treating bulk transition metal oxides in a nitrogen atmosphere to replace some oxygen with nitrogen and create pores, followed by additional heat treatment in an oxygen atmosphere to produce nitrogen-doped porous transition metal compounds.
Conventional bulk transition metal oxides have small specific surface areas and large grain sizes, which limit lithium-ion diffusion rates and result in poor capacity and cycle life when used as electrode active materials in lithium secondary batteries.
This technology nitrides TiO2 or Co3O4 bulk oxides in an ammonia atmosphere to create titanium oxynitride or cobalt monoxide intermediates, then oxidizes them in an oxygen atmosphere. This transforms them into a nanoporous structure with smaller grains and introduced pores while maintaining the original crystal structure. Applicable to high-capacity anode active materials for mobile devices and power tool batteries, it maintains the original composition while expanding internal pore area beyond the external surface area, significantly increasing electrolyte contact.
This invention was developed with support from the Samsung Science and Technology Foundation for research on developing high-capacity/fast-charging electrode materials using sequential gas-phase reactions.
This technology is a top-down process that creates a porous metal compound structure with low oxygen content by heat-treating bulk metal oxides in a nitrogen atmosphere, followed by a second heat treatment in an oxygen atmosphere to produce a nitrogen-doped metal oxide structure with a high specific surface area and fine grains.
Conventional bulk materials have low specific surface areas and large grain sizes, leading to inefficient ion diffusion paths and limited electrochemical performance in lithium secondary batteries.
This technology controls the relative temperatures of the first and second heat treatments based on whether the metal element is in groups 4–8 or group 9. The first heat treatment in an ammonia atmosphere creates a porous precursor, such as an oxynitride, while the second heat treatment in an oxygen atmosphere induces nitrogen doping and forms metastable crystal structures like the anatase phase. It can be applied to titanium, niobium, cobalt, and iron oxide-based anode materials, as well as the production of porous oxides for photocatalysts and sensors. Its key advantage is the ability to obtain nanoporous structures from commercial bulk powder without the need for templates.
This invention was developed with support from the Samsung Science and Technology Foundation for research on developing high-capacity/fast-charging electrode materials using sequential gas-phase reactions.
