This technology produces a 3.5-valent vanadium electrolyte by reacting vanadium pentoxide (V2O5), a low-cost precursor, with a formic acid reducing agent in a catalytic reactor. To compensate for hydrogen ions consumed during the reaction, an acidic solution is added according to the formula (3A < W < 8A) to suppress pH changes and prevent performance degradation caused by ion permeation.
When producing a 3.5-valent electrolyte using vanadium pentoxide, which is cheaper than VOSO4, a significant amount of hydrogen ions are consumed during the reduction process, leading to an increase in pH. This results in lower electrolyte viscosity and increased vanadium ion crossover through the ion-selective membrane, causing capacity imbalance and a sharp decline in energy density and current efficiency.
This technology maintains pH balance by adding a second acidic solution containing hydrogen ions (W mole) at a ratio of 3A < W < 8A, preferably 5A ≤ W ≤ 6A, either before or after the catalytic reaction of vanadium pentoxide (A mole) with the reducing agent. It can be applied to large-capacity vanadium redox flow battery ESS, renewable energy storage systems, and electrolyte rebalancing processes, enabling the use of low-cost raw materials while suppressing long-term capacity decay caused by crossover.
This invention was developed with support from the Supercritical Material Industry Technology Center of the Ministry of Trade, Industry and Energy.
This technology involves applying an aqueous composition containing a polyelectrolyte, an acrylate-based host polymer, a crosslinking agent, and a photoinitiator, followed by UV irradiation to form a solid electrolyte matrix in film form.
Conventional sol-gel methods or thermal curing processes have struggled with large-area roll-to-roll coating due to the low viscosity of the compositions. Furthermore, they faced technical limitations, including environmental restrictions related to the use of organic solvents and the need for complex encapsulation processes.
This technology ensures eco-friendliness by using water-based solvents, enables large-area coating by leveraging the high viscosity of the polyelectrolyte, and reduces processing time through UV curing. By adjusting the mixing ratio and molecular weight of the acrylate host and PSSA, it achieves an ionic conductivity of 1×10^-3 S/cm or higher and a transmittance of 80% or more. Applicable to electrochromic smart windows, transparent thin-film batteries, and flexible ion devices, it allows for continuous roll-to-roll production with just seconds of UV exposure.
This invention was developed with support from the Ministry of Trade, Industry and Energy for the development of energy-saving large-area smart films featuring UV/IR blocking and 35% variable transmittance based on organic electronic materials.
This technology features a structural design that incorporates protrusions and grooves within the housing, aligned with the anode and cathode tabs of battery modules. It increases the velocity and flow rate of the cooling fluid and generates turbulence to efficiently cool localized heat around the tabs.
Electrode tabs in battery modules are prone to heat concentration during charging and discharging. Conventional cooling fluid injection methods failed to account for these localized heat characteristics, resulting in low cooling efficiency and temperature deviations between cells.
This technology utilizes protrusions within the housing to accommodate electrode tabs, forcing the cooling fluid to strike them, while grooves acting as partitions are placed between modules to push the fluid upward. These structures are arranged alternately along the flow direction. Applicable to EV battery packs, immersion-cooled ESS racks, and high-power tool packs, it resolves heat concentration at the tabs and ensures temperature uniformity across cells.
This invention was developed with support from the Ministry of Science and ICT for research into carbon-neutral dry reforming reaction mechanisms based on high-yield, high-selectivity, and high-stability heterogeneous alloy catalysts.
This technology utilizes an intermediate for creating a porous silicon oxycarbide (SiOC) with a 3D network structure. By introducing cage-structured POSS moieties between linear polysiloxane backbones, it ensures the formation of uniform nanopores within the SiOC matrix after pyrolysis.
Conventional silicon-based anode materials undergo 300–400% volume expansion during lithiation, leading to physical particle fracture and loss of electrical contact. Additionally, excessive SEI layer formation has historically caused electrochemical performance degradation.
This technology synthesizes a crosslinked intermediate via hydrosilylation of linear polysiloxane, aromatic compounds, and POSS moieties, which is then pyrolyzed to form a porous SiOC structure. The steric hindrance of POSS inhibits carbon cluster growth and creates numerous internal pores, securing ion diffusion pathways. Applicable to high-capacity silicon-based anodes for smartphones, laptops, and long-range EV cells, it achieves higher capacity than graphite while mitigating electrode delamination caused by expansion.
This invention was developed with support from the Ministry of Education’s research on biomimetic nanosensor systems.
This technology is a glass-ceramic lithium halide solid electrolyte composed of lithium (Li), a +4 oxidation state transition metal (such as Zr), and a halogen element, achieving both air stability and high ionic conductivity.
Conventional sulfide-based solid electrolytes suffer from low stability, as they degrade easily in the atmosphere. Existing halide alternatives also face limitations, requiring expensive rare metals like In or Y, which drives up manufacturing costs and hinders mass production.
This technology synthesizes a Li2ZrCl6 solid electrolyte based on Zr, an abundant and low-cost +4 oxidation state transition metal, using either a solid-state method via mechanical milling (e.g., ball milling) or a wet process using organic solvents. It can be applied to cathode composite layers and solid electrolyte layers in all-solid-state batteries for EVs, as well as mass-production pilot lines, reducing both dry-room management burdens and raw material costs.
This invention was developed with support from the Ministry of Science and ICT for the development of highly ion-conductive, solution-processable sulfide-based solid electrolyte technology for high-stability, room-temperature sodium all-solid-state batteries.
This technology improves structural stability and cycle life in 5V-class spinel cathode active materials (LiNixMny-αM1αO4-βM2β) by co-doping with high-valence metals (M1) such as Nb, Mo, Ta, and W, and anions (M2) such as F and Cl, precisely controlling the average Mn oxidation state between 3.5 and 4.
Conventional spinel cathode materials (LiMn2O4) suffer from structural collapse due to manganese dissolution during high-voltage charge/discharge cycles, resulting in low discharge capacity. Furthermore, they face rapid performance degradation as the number of charge/discharge cycles increases.
This technology stabilizes the crystal structure and suppresses surface degradation by doping the precursor with +5 or +6 valence transition metals (M1) during wet co-precipitation, followed by dry ball-milling to dope with anions (M2), adjusting the Mn3+ content to a range of 0.3% to 3.38%. It can be applied to cobalt-free high-voltage EV batteries, high-power power tools, and hybrid vehicle cells, reducing reliance on rare metals while ensuring durability in the 5V operating range.
This invention was developed with support from the Ministry of Science and ICT for the development of core and commercialization technologies for interface-optimized, rod-shaped secondary battery materials.
This technology incorporates a WO3/ZrO2 composite that acts as an acid catalyst within the lithium-sulfur battery cathode, promoting the activation of sulfur-containing materials and inhibiting the dissolution of lithium polysulfides generated during charge and discharge cycles into the electrolyte.
Lithium-sulfur batteries have historically faced challenges such as low utilization of sulfur as a cathode active material and reduced lifespan due to the loss of cathode material as intermediate lithium polysulfides dissolve into the organic electrolyte. Additionally, the low electrical conductivity of sulfur has limited performance in low-temperature environments.
This technology produces a freestanding film by mixing an acid catalyst—with a WO3 to ZrO2 metal molar ratio of 2.5:7.5 to 3.5:6.5—with cathode active materials and carbon, followed by compression molding. The catalyst is designed to adsorb polysulfides through Lewis acid-base interactions and mediate sulfur redox reactions. Suitable for lightweight, current-collector-free lithium-sulfur pouch cells, wearable power sources, and portable equipment for cold climates, it enhances sulfur utilization and increases practical capacity even at low temperatures.
This technology is a separator for lithium secondary batteries that improves electrolyte wettability by coating both sides of a porous separator with a hydrophilic polymer, such as polyethylene oxide (PEO), to a specific thickness, thereby increasing affinity with sulfur dioxide (SO2)-based inorganic liquid electrolytes.
Conventional polyolefin separators suffer from low wettability with SO2-based inorganic liquid electrolytes, leading to insufficient impregnation, which results in degraded battery performance and shortened cycle life.
This technology is configured to improve charge/discharge efficiency and low-temperature operational stability by coating both sides of a porous substrate, such as polyethylene, with a polymer material like PEO at a thickness of 1–10 μm, optimizing wettability for inorganic liquid electrolytes. It can be applied to high-safety lithium secondary batteries using non-flammable inorganic electrolytes, power sources for equipment in polar or high-altitude regions, and special-purpose energy storage devices, ensuring stable operation without electrolyte impregnation issues even in sub-zero environments.
This invention was developed with support from the Ministry of Trade, Industry and Energy for intelligent battery control for distributed solar power and energy storage systems.
This technology is a numerical analysis method that significantly reduces computational complexity by linearizing nonlinear terms using Taylor approximation and performing LU decomposition on matrices, enabling efficient solving of high-dimensional partial differential equation-based models like P2D for analyzing physical reactions in lithium-ion batteries.
While conventional P2D models can precisely represent internal battery states, they suffer from high computational costs. In particular, as electrode dimensions increase, the computational load grows exponentially—often exceeding the fourth power of the grid count—making real-time internal state prediction in BMS challenging.
This technology converts model equations into time-step-based difference equations, linearizes nonlinear term vectors via Taylor approximation to avoid iterative calculations, and uses LU decomposition to isolate independent operations. By applying approximate factorization to high-dimensional matrices, it reduces computational complexity from O(n^9) to O(n^3). It can be applied to onboard electrochemical models for vehicle BMS, digital twins for cell design, and fast-charging profile optimization software, allowing real-time tracking of lithium concentration and potential distribution even on low-spec embedded processors.
This invention was developed with support from the Ministry of Science and ICT's Applied Analysis and Computing Center.
This technology is a solid electrolyte that improves both mechanical strength and ionic conductivity by dispersing exfoliated organoclay (montmorillonite) within a semi-interpenetrating polymer network (semi-IPN), while also suppressing lithium and sodium dendrite growth.
Conventional gel polymer electrolytes (GPE) face a trade-off where increasing liquid content to boost ionic conductivity results in reduced mechanical strength. Furthermore, when used with lithium metal anodes, dendrite formation leads to decreased stability and shorter cycle life.
This technology utilizes a nanocomposite structure in which 1–3 parts by weight of exfoliated organo-montmorillonite are dispersed in a semi-IPN matrix composed of cross-linked ETPTA and non-cross-linked PVdF-HFP polymers. The high aspect ratio and dielectric constant of the clay increase polymer chain flexibility, lowering the glass transition temperature and raising the lithium-ion transference number to induce uniform ion deposition. Applicable to both lithium metal and sodium-ion batteries, it ensures the durability of UV-curable thin-film electrolytes by adding only a small amount of inexpensive natural clay.
This invention was developed with support from the Ministry of Science and ICT for hyper-ion transport channel-based superionic conductive flexible materials.
This technology involves synthesizing copper phosphorus sulfide (Cu3PS4) nanocrystals as an anode active material for potassium-ion batteries, then doping them with cobalt (Co) and physically compositing them with carbon-based conductive agents like CNTs to enhance electrochemical performance.
Conventional anode materials for potassium-ion batteries have suffered from poor cycling stability and insufficient rate capability due to the repeated insertion and extraction of large potassium ions.
This technology synthesizes Cu3PS4 nanoparticles by ball-milling Cu, P, and S powders, then re-ball-milling them with cobalt powder and carbon-based conductive agents like CNTs to form a cobalt-doped composite anode structure, thereby improving the reversible insertion/extraction efficiency of potassium ions and electrode stability. It can be applied to large-capacity energy storage systems (ESS) and low-cost grid auxiliary power sources that reduce reliance on lithium resources, with the advantage of enabling mass production of anode materials through solvent-free mechanical synthesis.
This invention was developed with support from the Ministry of Science and ICT for the development of high-capacity, long-life metal thiophosphate anode materials for sodium and potassium-ion batteries through the stabilization of layered and tunnel structures.
This technology uses magnesium nitrate (Mg(NO3)2) as an additive in carbonate-based electrolytes for secondary batteries with lithium metal anodes. It creates a high-strength protective layer (SEI) composed of Li-Mg alloy, LiF, and LiNxOy on the anode surface and controls the solvation structure of lithium ions to suppress dendrite growth.
Lithium metal anodes have historically suffered from dendrite growth due to uneven lithium deposition and surface degradation from side reactions with the electrolyte, leading to reduced energy efficiency. In particular, conventional ether-based electrolytes have been limited in high-voltage applications due to instability.
This technology utilizes an electrolyte consisting of magnesium nitrate dissolved in a mixture of chain and cyclic carbonate solvents, such as EMC and FEC. This alters the solvation structure of lithium ions, and during charge/discharge cycles, Mg and nitrate ions react with lithium to promote spherical lithium deposition while forming an inorganic protective layer of Li3Mg7 alloy, LiF, and LiNxOy on the anode surface. It can be applied to electrolyte design for lithium metal batteries paired with 4V-class high-voltage cathodes, high-energy pouch cells, and next-generation electric vehicle cells, allowing for improved charge/discharge efficiency of lithium metal anodes while utilizing existing carbonate electrolyte processes.
This invention was developed with support from the Ministry of Science and ICT for the development of core technologies for high-energy-density lithium metal batteries based on the design of natural organic/inorganic composite membrane formation reactions.
This technology improves cycle performance and suppresses crystal structure instability during high-voltage charging and discharging by doping calcium (Ca) into the sodium layer of layered oxide cathode active materials for sodium secondary batteries.
Layered complex metal oxide cathode active materials for sodium secondary batteries have historically faced issues with capacity retention and lifespan degradation, as the repeated extraction and insertion of sodium ions during high-voltage cycling causes the crystal structure to deform or become unstable.
This technology utilizes a cathode active material with the composition Na1-2xCax[(NiyCozMn1-y-z)]O2 (0.007≤x≤0.02) and stabilizes the crystal structure by doping calcium into the sodium layer, ensuring structural integrity even under high-voltage operating conditions exceeding 4.0V. Applicable to sodium-ion batteries for renewable energy-linked ESS, electric two-wheelers, and low-speed electric vehicles, it is expected to increase energy per cell by raising the operating voltage limit to 4.3V.
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 involves manufacturing an anode active material by uniformly coating 5–10 wt% of carbon onto the surface of micro-sized spherical titanium dioxide (TiO2) particles, which are composed of aggregated nano-sized primary particles synthesized via a hydrothermal method, thereby enhancing electrical conductivity and sodium-ion reactivity.
Conventional anode materials for sodium-ion batteries have faced limitations due to the large size of sodium ions, which results in slow migration speeds and low reversible capacity. Furthermore, they suffer from rapid capacity degradation and low tap density, leading to poor energy density.
This technology utilizes hydrothermal synthesis with a titanium tetrachloride (TiCl4) precursor, a urea hydrolyzing agent, and a spheroidizing agent to obtain spherical secondary TiO2 particles with easily controllable primary particles. Subsequent sucrose-based heat treatment uniformly coats the surface with carbon, improving both electronic conductivity and tap density (0.8–1.2 g/cm³). It can be applied to sodium-ion battery anodes for low-cost energy storage systems and residential power storage, securing high volumetric storage capacity while reducing material costs.
This technology forms a protective layer on a metal electrode using carbon particles coated with polycatechol (e.g., polydopamine) and a binder. By securing structural stability through hydrogen bonding between the binder and the coating layer, it physically suppresses surface side reactions and dendrite growth on the metal electrode.
Existing protective films lacked the rigidity to suppress alkali metal dendrites, and issues such as reduced ion conductivity and uneven coating prevented them from completely blocking side reactions between the electrolyte and the metal electrode, leading to shortened battery life.
This technology creates a protective layer by dispersing polycatechol-coated carbon particles within an alkali metal ion-conductive binder. Hydrogen bonding between the coating layer and the binder prevents the protective layer from collapsing while inducing uniform pore distribution, which lowers lithium-ion flux density and ensures even metal deposition. It can be applied to next-generation high-energy cells using alkali metal anodes, such as lithium-metal, lithium-air, and lithium-sulfur batteries, reducing anode thickness while lowering the risk of short circuits during repeated charge-discharge cycles.
