This technology creates a nanoporous structure by self-assembling polyetherimide (PEI) particles onto a robust aramid nanofibril (ANF) framework. It enhances ion affinity within the electrolyte to suppress lithium dendrite growth.
Conventional polyolefin separators are prone to lithium dendrite formation during charge/discharge cycles in lithium secondary batteries, leading to short circuits, fires, and reduced lifespan. It has also been difficult to simultaneously achieve high ionic conductivity and effective dendrite suppression.
This technology involves mixing an aramid nanoseed dispersion with a polyetherimide solution, coating the mixture, and then performing sequential solvent exchange using a protic solvent and water, followed by freeze-drying to produce a composite porous membrane with nanopores. This structure maximizes electrolyte wettability and ion transport rates while maintaining mechanical strength. Applicable to separators for lithium metal batteries and fast-charging EV cells, it blocks dendrite penetration paths, thereby reducing fire risks and extending cell life.
This invention was developed with support from the Carbon Neutral Water-Energy Integrated System Leading Research Center of the Ministry of Science and ICT.
This technology addresses the volume expansion of silicon-based anodes by chemically bonding carbon quantum dots containing specific functional groups with water-soluble binders through photo (IPL) or thermal condensation polymerization. The resulting composite provides robust cross-linking for the electrode active material.
Silicon anode active materials suffer from poor cycle life due to significant volume expansion and contraction during charge and discharge cycles. Furthermore, conventional polymer binders often lead to reduced electrical conductivity and complex manufacturing processes.
This technology involves mixing carbon quantum dots, which contain hydroxyl, amino, or carboxyl groups, with a water-soluble binder such as PAA, and then irradiating the mixture with intense pulsed light (IPL) to induce dehydration condensation polymerization, forming a binder composite. This composite firmly secures the active material while providing electrical conduction paths. It can be applied to high-capacity anodes for electric vehicles with high silicon content and to rapid-charging smartphone battery electrode processes. By completing cross-linking in just milliseconds of light exposure, it reduces the burden on drying equipment and enhances electrode conductivity.
This invention was developed with support from the Ministry of Science and ICT for the development of flexible zinc-ion micro-batteries applicable to wearable devices.
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 features a thick-film electrode structure that prevents physical cracking and ensures uniform ionic conductivity by laminating an electrode active layer, containing multifunctional monomers and electrolyte, onto a nonwoven polymer substrate with carbon bodies bonded to the surface via π-electron interactions.
Conventional thick-film electrodes suffer from physical cracks caused by solvent evaporation during drying, as well as reduced electrical conductivity due to the uneven distribution of conductive agents and binders. Furthermore, as the electrode thickness increases, the ion transport distance lengthens, leading to degraded electrochemical performance.
This technology utilizes a photocurable multifunctional monomer to cure the electrode active layer without a separate drying process, while the carbon-bonded nonwoven polymer substrate improves the uniformity of conductive agent distribution and ionic conductivity in the thickness direction. Applicable to high-loading electrodes for EVs and large-capacity ESS cells requiring high energy density, this technology can increase active material loading to over 40 ㎎/㎠ while reducing the need for solvent drying equipment.
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 pre-lithiation layer on a silicon anode, followed by a lithium-alloy metal protective layer. This structure maintains the lithium-silicon alloy integrity and controls interfacial resistance even when exposed to the atmosphere.
Pre-lithiation of silicon anodes has historically led to instability and performance degradation when exposed to air. Furthermore, these anodes required high operating pressures and suffered from low discharge capacity and poor rate capability due to interfacial side reactions between the silicon anode and the solid electrolyte.
This technology involves coating lithium onto the anode active material layer to create a pre-lithiation layer, then applying a protective layer of lithium-alloying metals such as tin (Sn) or silver (Ag). The formation of a Li-Si alloy internally and a Li-M alloy in the protective layer ensures structural stability in ambient air and enables high discharge capacity under low-pressure conditions. Applicable to all-solid-state EV batteries, portable electronics, and power device cells, this technology reduces reliance on dry rooms and improves handling during cell assembly.
This invention was developed with support from the Ministry of Science and ICT under the project for developing bridge technologies for large-area, 600Wh/L-class all-solid-state EV batteries.
This technology is a polymer solid electrolyte in which metal salts, such as lithium salts, are uniformly dispersed within a zwitterionic polymer matrix obtained by polymerizing zwitterionic compounds of a specific chemical formula.
Conventional polymer solid electrolytes suffer from low ionic conductivity, low lithium-ion transference numbers, and narrow electrochemical windows, making them difficult to use with high-voltage cathode materials. Furthermore, their unstable interface with lithium metal anodes has limited their practical application.
This technology involves applying a slurry of zwitterionic monomers and metal salts, followed by thermal polymerization to form a polymer matrix, which enhances ion dissociation and mobility while improving interfacial compatibility with electrodes and mechanical strength. It can be applied to next-generation all-solid-state batteries combining lithium metal anodes and high-voltage cathodes. By impregnating the cathode layer with the electrolyte to integrate it with the solid electrolyte layer, the internal cell interfacial resistance can be significantly reduced.
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 is an electrochemical process that extracts lithium by utilizing the potential difference between a lithium-ion-containing solution (seawater or brine) and an acidic solution. Hydrogen ions generated from the water-splitting reaction maintain electrical neutrality between cells, enabling continuous extraction.
Existing lithium extraction technologies have faced challenges with resource accessibility and low extraction efficiency. Furthermore, they have been limited by electrical imbalances between cells during lithium-ion migration, which prevents continuous operation and reduces economic viability.
This technology features an anode cell containing a lithium source and a cathode cell containing an acidic solution, separated by a membrane with 0.2–0.5 nm ion channels. By applying a voltage of 1.2–2V, lithium extraction and water splitting occur simultaneously. The acidic solution level is set 0.1–10 cm lower to apply transmembrane hydrostatic pressure, enhancing energy efficiency and sustaining extraction. It can be applied to seawater and brine-based lithium recovery plants and geothermal lithium extraction facilities, allowing for the production of hydrogen as a byproduct while repeatedly concentrating lithium salt solutions for battery materials.
This invention was developed with support from the Ministry of Science and ICT for the development of high-efficiency multi-wavelength micro-LED arrays through 2D nano-micro crystal polarization control.
This technology features a solid electrolyte with nitrogen-doped graphene nanosheets dispersed within a polymer matrix. The lone pair electrons of the nitrogen atoms effectively coordinate lithium ions and create transport channels, enhancing both ionic conductivity and lithium-ion mobility.
Conventional polymer solid electrolytes, such as PEO, suffer from very low room-temperature ionic conductivity, typically around 10^-8 S/cm. Previous research involving filler additives has also struggled to simultaneously achieve both improved ionic conductivity and desired physical properties.
This technology incorporates nitrogen-doped graphene nanosheets containing pyridinic-N and pyrrolic-N at 2–4 wt% of the total electrolyte membrane weight. The lone pair electrons of the doped nitrogen increase affinity for lithium ions, while vacancies created by the removal of oxygen functional groups act as ion transport channels, improving electrochemical performance. Applicable to solid electrolyte layers in wearable devices, flexible display power sources, and medical micro-batteries where leakage must be avoided, it achieves room-temperature operational ionic conductivity with only a small amount of filler.
This technology is a cathode active material that enhances structural stability by substituting a portion of the oxygen (O) sites in a layered sodium transition metal oxide (Na-TM-O) lattice with halogen elements (F, Cl, Br, I) and adjusting the sodium (Na) content accordingly.
Due to the large ionic radius of sodium ions, significant lattice volume changes occur during charge and discharge cycles. This leads to irreversible phase transitions and instability in transition metal-oxygen bonds, which limits cycle life and high-rate performance.
This technology primarily uses fluorine to partially substitute oxygen sites to reinforce the crystal structure, while reducing sodium content to maintain a high Mn4+ ratio. The process involves a primary heat treatment of transition metal complex hydroxides and fluorine compounds at 300–500°C, followed by a secondary heat treatment with sodium salts at 700–900°C. Applicable to sodium-ion battery cathodes for residential/industrial energy storage and low-cost electric mobility, it suppresses irreversible phase transitions in O3-type layered structures and mitigates capacity loss during high-rate charging and discharging.
This invention was developed with support from the Ministry of Trade, Industry and Energy's GET-Future Laboratory program for next-generation lithium-ion batteries.
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 features an electrode structure that maximizes active material content by using a solvent-free polymer solid electrolyte composition. By mixing 120 to 350 parts by weight of excess lithium salt per 100 parts by weight of liquid monomer, we enhance ionic conductivity and oxidative stability, while allowing the composition to function as an electrode binder.
Conventional solid electrolytes suffer from low ionic conductivity and high interfacial resistance. Furthermore, the use of separate binders reduces energy density, and the use of solvents during manufacturing creates pores after drying, leading to lower process efficiency.
This technology involves mixing liquid monomers containing functional groups such as carbonyl, amine, epoxy, phenol, urethane, or acrylate with excess lithium salts like LiTFSI or LiFSI to create a solvent-free slurry with electrode active materials, which is then thermally cross-linked to form the electrode. By maintaining the electrolyte composition content within the electrode at 9–23 wt%, sufficient adhesion and an ionic network are secured without the need for a separate binder. Applicable to polymer-based all-solid-state batteries using high-voltage cathodes like NCM811 or LNMO, as well as cells for communication equipment and ESS, this method simplifies production lines by eliminating drying and solvent recovery steps.
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 implements a co-continuous phase structure where sulfide-based solid electrolytes and gel polymer electrolytes each form continuous lithium-ion channels, maximizing ionic conductivity and reducing interfacial resistance.
Conventional inorganic solid electrolytes are brittle and suffer from high interfacial resistance with electrodes, which can lead to dendrite growth. Conversely, polymer electrolytes have low ionic conductivity, limiting their use as standalone solutions.
This technology involves mixing a gel polymer electrolyte precursor—composed of 1–15 wt% photopolymerizable monomer, LiFSI, and a glyme-based compound—with a sulfide-based solid electrolyte in a weight ratio of 1:9 to 3:7. It then undergoes photopolymerization and a 50–250 MPa surface compression process to form a co-continuous phase. Applicable to separator-replacement sheets or non-woven thin-film electrolyte layers in argyrodite-based all-solid-state batteries, it achieves ionic conductivity of over 10^-3 S/cm at room temperature while reducing process defects caused by brittleness.
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 nanoporous nanocellulose coating layer on a current collector substrate using the Non-solvent Induced Phase Separation (NIPS) method to induce uniform lithium electrodeposition and enhance lithium-ion conductivity and interfacial stability.
Conventional lithium metal anodes have faced issues with dendrite growth, low reversibility, and volume expansion. In particular, anode-free systems have been limited by rapid capacity degradation due to low plating/stripping efficiency during the initial lithium nucleation stage.
This technology introduces a thin-film coating layer (5 μm or less) containing TEMPO-oxidized nanocellulose and functional groups with counter-cations such as Li+ onto the current collector. A porous structure is created using the NIPS method with a non-solvent to improve electrolyte wettability. Enhanced interfacial stability with lithium suppresses dendrite growth. It can be applied to anode-free lithium metal batteries—which use only a copper current collector without anode active materials—and to smartphone or EV batteries where volumetric energy density is critical, offering the advantage of reducing initial lithium loss while utilizing eco-friendly bio-materials.
