This technology enhances ORR and OER electrochemical performance by doping benzene-ring-based 2D atomic crystal structures (C2N) with heteroatoms like sulfur (S) or phosphorus (P) to modify lattice bond angles and band structures, while controlling 0D to 3D network structures through solvent blending and acidity adjustment.
Conventional 2D graphene materials have a zero bandgap, making them difficult to apply in electronic devices. Existing nitrogen-doping methods also involve complex processes, carry risks of metal contamination, and suffer from structural instability in the doped regions, which limits bandgap control.
This technology polymerizes hexaaminobenzene and benzene derivatives to create a C2N aerogel, then introduces S or P dopants to adjust structural stress and form a bandgap. By optimizing the composition of organic solvents, water, alcohol ratios, and acidity-adjusting sources like thiourea or sulfuric acid, the network dimension can be freely modified. This material can be used in metal-air battery cathodes, metal-free electrocatalysts, and semiconducting 2D device channels, allowing for custom band structure design without the risk of metal contamination.
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 features a polymer binder created by graft-polymerizing highly conductive aniline-based polymers onto a chitosan backbone. By securing both mechanical strength and electrical conductivity, it suppresses the volume expansion of silicon anodes and maintains a stable electrical network.
Conventional silicon anode binders, such as PVdF, often fail to withstand the significant volume changes of silicon particles during charge and discharge cycles, leading to electrode structural collapse. Furthermore, they suffer from rapid capacity degradation as electrical contact with the current collector is lost.
This technology utilizes a graft copolymer binder, combining natural chitosan—which provides mechanical strength and adhesion—with conductive aniline-based polymers via radical polymerization. By introducing carboxyl groups and controlling weight ratios, the binder enhances bonding with silicon particles and improves electrochemical stability. Applicable to high-capacity, silicon-rich anodes and eco-friendly materials derived from crustacean byproducts, this solution reduces reliance on conductive additives while effectively delaying electrode structural collapse.
This technology forms an artificial cathode-electrolyte interface (CEI) layer containing silyl ether (Si-O) functional groups by coating Ni-rich NCM cathode active materials with dimethoxydimethylsilane (DODSi) and performing heat treatment. This suppresses side reactions with the electrolyte and enhances cathode stability.
Ni-rich NCM cathodes suffer from electrolyte decomposition at the surface due to chemically unstable Ni4+ in the charged state. The resulting nucleophilic fluoride (F-) ions cause transition metal dissolution and increased surface resistance, leading to a rapid decline in cycle life.
This technology involves coating the surface of NCM active materials with DODSi in an NMP solvent, followed by heat treatment at 400–800°C. The formed Si-O functional groups act as a protective layer to prevent electrolyte decomposition and selectively scavenge fluoride ions, inhibiting transition metal dissolution. Applicable to high-capacity cells for EVs and high-nickel cathode development, it helps improve cathode specifications requiring high-temperature cycle retention.
This technology is a structural design that loads electrolyte additives or lithium salts into needle-like carriers with unidirectional pores to control the gradual release of additives within a battery. Adding a polymer coating layer to the surface allows for even more precise control over the release rate.
Conventional methods of adding additives directly to the electrolyte suffer from rapid depletion during initial battery reactions, failing to maintain performance improvements over time. Furthermore, residual additives can lead to increased impedance and degraded rate capability.
This technology utilizes needle-like carriers with unidirectional pores—such as alumina, silica, or halloysite—to load additives via vacuum impregnation. By forming a polymer coating layer, such as polyethyleneimine (PEI) or PVdF, on the surface, the release path is physically delayed. This allows for application in electrolyte composition design, lithium metal anode cells, and fast-charging cells, enabling additive replenishment when needed without excessive initial loading, while preventing impedance rise.
This invention was developed with support from the Ministry of Science and ICT for energy storage and conversion systems based on sustained-release material control.
This technology involves an electrolyte design that creates a crystalline solid electrolyte by combining a thiophenium-based cation with a fluorohydrogenate-based anion, then doping it with lithium salt to maximize lithium-ion mobility through interstitial sites in an orthorhombic crystal structure.
Conventional liquid electrolytes suffer from issues such as leakage, volatility, thermal instability, and explosion risks. Conversely, typical solid electrolytes have faced limitations in practical application due to low ionic conductivity.
This technology produces a compound combining thiophenium and fluorohydrogenate, places lithium salt in the interstitial sites of the orthorhombic crystal structure, and controls the compound's melting entropy to 15–25 J/K·mol to ensure flexibility within the crystalline phase, achieving ionic conductivity of over 200 mS/cm at room temperature. Its strength lies in enabling liquid-level conductivity in a solid state, making it suitable for leak-free, high-safety lithium secondary batteries and small cells for wearable devices.
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 creates hollow, multilayered porous silicon arrays by electroplating silicon microspheres onto a polymer template and subsequently removing the template. This structure mitigates the volumetric expansion stress that occurs during lithium charge and discharge cycles while maximizing the reaction surface area.
While silicon anode materials offer extremely high theoretical capacity, they suffer from excessive volumetric expansion—up to 4.12 times—during charge and discharge, leading to structural cracking and collapse. This results in shortened cycle life and the disruption of electron transport pathways within the electrode.
This technology involves self-assembling polymer microspheres to create a template, coating them with silicon via electroplating, and removing the polymer through heat treatment to produce a hollow, porous silicon microsphere structure. If necessary, conductivity can be enhanced by applying carbon, metal, or non-metal inorganic conductive materials via atomic layer deposition (ALD). Applicable to high-capacity silicon anodes for long-range electric vehicle cells or thin-film micro-batteries, the internal void space acts as a buffer for expansion, preventing the electrode structure from easily collapsing even after repeated charging.
This technology improves the electrical conductivity and rate capability of lithium titanate (LTO) powder by forming a metal or conductive inorganic coating layer on the particle surface using atomic layer deposition (ALD).
Lithium titanate suffers from low electronic conductivity, which leads to high reaction resistance and poor rate capability during rapid charging and discharging. Conventional carbon coating methods have limitations, as the carbon tends to oxidize during high-temperature heat treatment, reducing its effectiveness in enhancing conductivity.
This technology involves alloying lithium titanate particles with metals such as Cu or Al, or doping them with heterogeneous elements, and then forming single or dual coating layers of metal or non-metal conductive inorganic materials on the particle surface via atomic layer deposition to establish an electrical conduction network. Suitable for applications requiring high current flow in short durations, such as regenerative braking batteries for hybrid vehicles or industrial uninterruptible power supplies (UPS), this method avoids the oxidation issues associated with carbon coating heat treatment and allows for the precise design of conductive pathways at the particle level.
This technology enables the wet synthesis of solid electrolytes by utilizing imidazolium cation-based onium salt compounds (ionic liquids) as solvents. It allows for stable solid electrolyte synthesis across a wide temperature range of 100–400°C.
Conventional dry processes for all-solid-state batteries have been limited by difficulties in scaling up. Even when wet processes are applied, uneven contact between the solid electrolyte and electrodes often leads to reduced capacity and performance.
This technology utilizes onium salt compounds composed of imidazolium cations and anions such as BF4-, NO3-, PF6-, and AsF6- as solvents to perform wet synthesis at 100–400°C. These solvents maintain a low viscosity of 4–6 cP at 100°C, ensuring excellent dispersibility, mitigating electrolyte leakage and short circuits, and enhancing high-temperature ionic conductivity. Applicable to the mass production of sulfide and oxide-based solid electrolytes, it overcomes the scale-up constraints of dry processes to enable large-area electrolyte manufacturing.
This technology is a 3D network-based polymer binder that incorporates self-healing ureido-pyrimidinone (UPy) side chains and ion-conductive poly(ethylene glycol) (PEG) side chains into a polyacrylic acid backbone, buffering silicon volume expansion while securing lithium-ion transport pathways.
Silicon anodes suffer from significant volume expansion and contraction during charge and discharge cycles, leading to particle pulverization and SEI layer degradation. These issues cause the active material to detach from the current collector and the electrode structure to collapse, limiting battery lifespan and efficiency.
This technology utilizes a graft copolymer binder that provides self-healing functionality through reversible UPy hydrogen bonding and enhances ion conductivity via PEG grafting, allowing the physical network within the electrode to recover from structural damage. Applicable to high-capacity next-generation silicon-rich anodes and long-life EV anode slurries, it maintains over 96% coulombic efficiency for 350 cycles while simultaneously reducing ion transport resistance.
This technology produces metal-carbon composite catalysts using N-Methyl-2-pyrrolidone (NMP)-based monomers and metal precursors. By adjusting the type of organic additive, it controls the carbon matrix morphology (sheet or porous) and the metal bonding state (ionic or particulate). The metal binds to nitrogen-doped carbon to form M-N active sites, while metal particles are protected by an outer carbon shell for enhanced stability.
Conventional carbon-based catalysts suffer from difficult structure control, low process efficiency, and reliance on environmentally harmful acid/base treatments. Furthermore, noble metal catalysts like platinum or ruthenium are expensive, while low-cost metal catalysts often lack the activity and long-term stability required for oxygen reduction (ORR) and oxygen evolution (OER) reactions.
This technology involves radical polymerization, heat treatment, and carbonization of monomers containing NMP and metal precursors. By selectively using organic additives like 4-aminopyridine or pyrrole-2-carboxylic acid, the structure and porosity of the carbon sheets or sponges can be tuned. Pyridinic and pyrrolic nitrogen doping optimizes metal binding, and the carbon shell improves durability. This allows for the creation of bifunctional catalysts using only low-cost transition metals without acid/base post-treatment, suitable for zinc-air battery air electrodes and fuel cell cathodes.
This technology improves long-term battery life and stability by incorporating needle-shaped carriers with internal pores (e.g., halloysite) into the separator coating layer. Functional additives for SEI formation or side-reaction suppression are loaded into these pores, allowing for the sustained release of additives during charge and discharge cycles.
Lithium-ion batteries have historically faced issues with capacity retention and performance degradation due to side reactions between electrodes and electrolytes during repeated cycling. Furthermore, limitations in separator reliability have persisted due to insufficient basic properties such as coatability, heat resistance, and wettability.
This technology creates a functional structure by loading functional additives into needle-shaped carriers with unidirectional pores using a vacuum method. By controlling the combined content of this structure and the binder to 15–25 wt% of the total coating material, it can be applied to separator coating processes for long-life EV and ESS cells using high-voltage cathodes. This ensures a continuous supply of electrolyte additives through the later stages of cycling while simultaneously enhancing the separator's heat resistance and wettability.
This invention was developed with support from the Ministry of Science and ICT for energy storage and conversion systems based on sustained-release material control.
This technology improves electrical conductivity and charge-discharge performance by irradiating lithium titanate (LTO) or silicon anode active materials with an electron beam to induce changes in the crystal lattice and the generation of trapped electrons, while simultaneously cross-linking the polymer binder.
While lithium titanate (Li4Ti5O12) offers excellent lifespan and safety, its electrical conductivity is inherently low, at around 10^-9 S/cm. This has historically led to significant initial capacity loss and poor rate capability.
This technology improves electrical conductivity by irradiating the anode active material itself or the slurry coating layer containing the active material with an electron beam at 0.5–10 MeV and 10–1000 kGy. This process induces chemical cross-linking of the polymer binder, strengthening the contact between the active material and the conductive agent. It can be applied to ESS for power grid frequency regulation requiring long lifespans, fast-charging batteries for electric buses, and auxiliary power sources for cold starting, thereby reinforcing high-rate charge-discharge capabilities while maintaining the inherent safety of LTO.
This technology is an anode manufacturing process that involves depositing a metal film on a silicon substrate, exfoliating the silicon thin film through heat treatment, and then applying a Metal-Assisted Chemical Etching (MACE) process to grow silicon nanowires.
Conventional slurry-type silicon anodes suffer from low electrical conductivity and shortened lifespans due to cumulative mechanical damage caused by silicon volume expansion during charging and discharging. Furthermore, existing nanowire growth processes are complex, which limits their mass production potential.
This technology utilizes a direct process that eliminates the need for conductive additives and binders. By exfoliating a metal film-silicon thin film stacked structure and performing chemical etching with an HF/H2O2 mixed etchant to form nanowires, it simultaneously improves electrical conductivity and cycle life. Because the nanowires are directly attached to the metal film, this structure can be applied to the development of high-energy-density cells for thin mobile batteries and wearables, enabling the realization of anodes with reduced electrode assembly steps and a higher ratio of active materials.
This technology suppresses the oxidative corrosion of metal components, such as current collectors and casing materials, in high-voltage and high-temperature environments by adding a small amount of fluoride salt (MFx), such as NaF, to a lithium imide-based electrolyte to generate fluoride anions (F-).
Unlike LiPF6, conventional lithium imide salts (such as LiN(SO2F)2) do not generate fluoride ions, which leads to the corrosion of aluminum cathode current collectors under harsh conditions like high voltage, high temperature, and overcharging. This results in performance degradation, including self-discharge, capacity loss, and increased internal resistance.
This technology involves dissolving lithium imide salt in a non-aqueous organic solvent, such as EC and DMC, and adding 0.007 to 0.1 wt% of a fluoride salt like NaF to enhance the oxidation resistance of the aluminum current collector. It can be applied to electrolyte design for EV cells using high-voltage cathodes and ESS modules exposed to high-temperature environments, allowing for broader use of imide-based electrolytes without concerns regarding current collector corrosion.
This technology features a bilayer structure with a high-capacity NCM (Li(NixCoyMnz)O2) layer on the current collector and a highly stable LCO (LiCoO2) layer on top, simultaneously achieving high capacity and structural stability.
Using a single material presents trade-offs: NCM offers high capacity but short lifespan, while LCO provides high safety but low capacity. Furthermore, conventional electrodes suffer from rapid degradation and cracking of active materials far from the current collector during repeated cycling, limiting efficiency and lifespan.
This technology forms a 20–40㎛ thick NCM layer on the current collector, topped with an LCO layer 5–10㎛ thicker than the NCM layer. By adjusting the NCM to LCO weight ratio to between 60:40 and 80:20, it optimizes high-voltage stability and cycle life. Applicable to backup power for telecommunications, energy storage systems, transportation batteries, and lithium capacitor electrodes, it improves the balance between capacity and durability simply by combining existing cathode materials.
