This technology is a water-based binder that secures water solubility by grafting gallic acid onto the side chains of a chitosan backbone. It induces self-crosslinking and hydrogen bonding between the gallol groups of the gallic acid to suppress the volume expansion of silicone anodes and enhance adhesion.
Silicone anodes have historically faced issues with electrode pulverization and capacity degradation due to rapid volume expansion exceeding 300% during charge and discharge cycles. Furthermore, conventional chitosan binders have low solubility in neutral or basic solutions, requiring them to be handled under acidic conditions.
This technology uses a hydrogen peroxide/L-ascorbic acid (H2O2/AA) redox system for free-radical grafting to bond gallic acid to chitosan, allowing the resulting gallic acid-grafted chitosan (CS-g-GA) copolymer to form a gallol-based 3D crosslinked network. This copolymer is highly water-soluble and maintains stable adhesion and electrical contact between silicone particles and the current collector. It can be applied by battery manufacturers looking to produce anodes using neutral aqueous slurries without acidic additives, as well as in the development of silicon-graphite composite anodes, reducing concerns about equipment corrosion and allowing for lower electrode resistance through simple adjustment of the gallic acid content.
This technology features a solid electrolyte that utilizes a zwitterionic structure within a Covalent Organic Framework (COF). By introducing nitrogen-based cationic rings and alkyl-linked anionic functional groups, it enhances lithium-ion dissociation and provides ion-conducting channels through a stacking structure.
Conventional inorganic solid electrolytes suffer from poor processability and high interfacial resistance. Meanwhile, amorphous organic electrolytes are limited by low ionic conductivity and insufficient thermal and electrochemical stability.
This technology forms pores and channels using a zwitterionic COF that combines cationic nitrogen-containing ring compounds with anionic functional groups. The cationic sites in the framework trap anions from lithium salts like LiTFSI, while the anionic groups attract lithium ions. Applicable to solid electrolyte layers and polymer-COF composite membranes in all-solid-state lithium batteries, it accelerates lithium-ion transport with the aid of anions within the channels.
This invention was developed with support from the Ministry of Science and ICT for photosensitive nanocluster artificial antibodies for multimodal cancer immunotherapy.
This technology is a solid-state electrolyte that enhances ionic conductivity and transference numbers by covalently bonding diethylene glycol (DEG) to the pyridinic N-sites of a porous crystalline covalent organic framework (COF) and adding ionic succinonitrile to induce lithium-ion hopping, vehicle, and free diffusion behaviors.
Conventional inorganic solid-state electrolytes are difficult to process and suffer from high interfacial contact resistance with electrodes. Amorphous polymer electrolytes also have limitations, including low room-temperature ionic conductivity, thermal and electrochemical instability, and reduced charge-discharge efficiency due to dendrite growth.
This technology involves introducing diethylene glycol via covalent bonding into a crystalline organic framework obtained by reacting triformylbenzene with a pyridine compound, and incorporating ionic succinonitrile and LiTFSI to promote lithium-ion dissociation and secure continuous ion transport pathways. It can be applied to lithium all-solid-state secondary batteries, thin-film batteries for wearable devices, and high-safety electric vehicle batteries, enabling fast lithium-ion movement even at room temperature without the risk of liquid electrolyte leakage.
This invention was developed with support from the Ministry of Science and ICT for photosensitive nanocluster artificial antibodies for multimodal cancer immunotherapy.
This technology features a sealed electrochemical cell designed with a magnetic or elastic attachment mechanism for easy electrode mounting and removal, along with a glass window for laser beam measurement, allowing for the simultaneous analysis of electrochemical and mechanical behavior.
Conventional cell assembly methods make it difficult to attach and detach plate-type or flexible electrodes within a glovebox. Furthermore, there have been limitations in maintaining airtight seals and precise electrode alignment required for the simultaneous observation of mechanical and electrochemical behavior.
This technology utilizes the magnetic attraction between a magnetic component and a cover, or applies pressure using an elastic ring and locking tabs to securely and easily fix the electrode in place. It is configured with a Teflon box equipped with a laser-transmitting glass window and an alignment device to ensure measurement efficiency and airtight integrity. Applicable to in-situ electrode deformation analysis and quality inspection equipment in battery research labs, it reduces sample replacement time within gloveboxes and minimizes alignment deviations between measurements, thereby enhancing data reproducibility.
This technology is a cathode active material that enhances rate capability and cycle stability by intentionally distorting the lattice of cobalt hexacyanoferrate (CoHCF) through zinc ion doping (Co1-xZnxHCF), creating pathways that facilitate easier ion transport.
While conventional CoHCF cathode materials offer high specific capacity, they have faced technical limitations due to relatively lower rate capabilities compared to nickel or copper-based Prussian blue analogues.
This technology synthesizes Co1-xZnxHCF (x=0.03~0.09) using iron, cobalt, and zinc precursors while controlling the Co:Zn molar ratio within the range of 97:3 to 91:9. Zinc doping reduces the lattice constant and forms mesopores within the particles, optimizing ion diffusion pathways. Applicable to aqueous electrolyte-based sodium-ion secondary batteries and energy storage systems linked to renewable energy with frequent output fluctuations, it significantly reduces capacity loss during high-speed charge/discharge cycles with only a small amount of zinc additive.
This technology involves the design and fabrication of a hybrid composite that combines a highly conductive porous reduced titania (TiO) core with needle-like rutile titania (r-TiO2) nanostructures, which are favorable for lithium intercalation.
Conventional anatase TiO2 anode materials suffer from low electrical conductivity and slow lithium-ion diffusion rates. Furthermore, their narrow operating potential window results in actual capacities that fall significantly short of theoretical limits, leading to low energy density.
This technology utilizes a magnesium thermal reduction process to create porous TiO, followed by acid treatment to grow needle-like r-TiO2 nanostructures in-situ on the surface. This creates a composite with heterogeneous oxidation states—a Ti2+ core and a Ti4+ surface—enabling the simultaneous use of pseudocapacitance and intercalation reactions. Applicable to batteries for power tools and hybrid vehicles requiring rapid charging, as well as high-power lithium-ion capacitors, this approach overcomes capacity limitations while maintaining the inherent safety of titania anodes.
This technology measures physical adhesion by cutting and peeling composite electrodes into multiple layers using a SAICAS micro-blade, while simultaneously performing continuous depth-profile analysis of binder distribution by applying X-ray Photoelectron Spectroscopy (XPS) to the exposed internal cross-sections.
Conventional electrode analysis techniques have been limited in their ability to precisely control and measure binder distribution and adhesion at various depths within an electrode. Consequently, it has been difficult to accurately evaluate the long-term reliability and physical stability of composite electrodes.
This technology is configured to measure adhesion in real-time by continuously cutting and peeling composite electrodes at specific depths of 1㎛ or more using a boron nitride micro-blade. It then quantifies binder distribution by irradiating the internal surface of each layer with X-rays to analyze the binding energy spectra and elemental percentages of the emitted photoelectrons. Applicable to the development of drying processes for thick, high-loading electrodes and the diagnosis of binder segregation defects, it allows for the simultaneous mechanical and chemical verification of binder migration phenomena in the thickness direction within a single sample.
This technology features a jig body structure with elastic components and terminal blocks that can be adjusted in position and length to accommodate different cylindrical battery cell sizes, along with a connection interface compatible with existing pouch-type charge/discharge jigs.
Conventional top-and-bottom clamping jigs often suffer from weak holding force, leading to unstable contact with cylindrical battery cells. Furthermore, evaluating cells of different sizes requires frequent jig replacements, which is both cumbersome and costly.
This technology allows for the repositioning of terminal blocks along the main variable holes of the jig body. It utilizes a length-adjustable structure for the first and second cylindrical members, combined with elastic components to securely hold the cell. It also incorporates a plate member for connection to pouch-type jigs and plug-in terminals for easy series/parallel expansion. Suitable for cylindrical cell manufacturing charge/discharge lines and battery evaluation labs, it enables testing of cells ranging from 18650 to large cylindrical formats using a single charger without the need for jig changes.
This technology involves transferring and coating a polymer thin film, such as PDMS, onto the surface of a porous copper current collector. It prevents excessive lithium deposition on the electrode surface during charge/discharge cycles of lithium metal batteries and induces lithium infiltration into internal pores, thereby suppressing dendrite growth.
Even when porous structures are used as anodes in lithium metal batteries, lithium often fails to penetrate the pores and instead deposits on the surface, leading to dendrite formation. This results in electrode volume expansion, short circuits, fire hazards, and performance degradation.
This technology forms a polymer/curing agent thin film on a substrate via spin coating at 1600–8000 RPM, cures it for 24–90 hours, and transfers it to a porous current collector at a pressure of 0.5–50.0 g/cm² to control the surface and induce uniform lithium deposition. It can be applied to lithium metal batteries using 3D copper foam or mesh as anode hosts and to anode-free cell development, allowing full utilization of internal pore space for lithium storage while reducing the risk of short circuits and fires.
This technology introduces Lambda Carrageenan, which contains hydroxyl (-OH) and sulfonate (-SO3-) groups, as a water-based binder to improve the structural stability and adhesion of silicon anodes. The hydroxyl groups form hydrogen bonds with silicon to strengthen adhesion, while the sulfonate groups enhance lithium-ion conductivity.
Silicon anodes undergo volume expansion of up to 400% during charge and discharge cycles, leading to particle pulverization, electrical isolation, side reactions with electrolytes, electrode structural degradation, and reduced initial efficiency and capacity. Furthermore, conventional synthetic polymer binders require organic solvents, imposing environmental and process constraints.
This technology adopts Lambda Carrageenan, a natural polysaccharide polymer, as a water-based binder to eliminate the need for organic solvents during electrode manufacturing. The hydroxyl and sulfonate groups form strong hydrogen bonds and an ion-conductive network with silicon particles. This suppresses structural deformation caused by volume expansion and increases adhesion to the current collector. It can be applied to eco-friendly anode production processes that aim to reduce the use of organic solvents like NMP and to high-capacity cells based on silicon nanoparticles, reducing the burden of solvent recovery equipment while securing cost competitiveness through low-cost, seaweed-derived materials.
This technology produces an LTO/Li2Ti3O7 composite anode active material with controlled oxygen vacancy concentration by heat-treating Li4Ti5O12 (LTO) in a nitrogen-containing reactive gas atmosphere to partially decompose it into Li2Ti3O7.
Conventional LTO materials suffer from poor rate capability due to low electronic conductivity and a sharp capacity drop at the end of charge/discharge cycles. Previous attempts to improve this through nanostructuring or carbon coating have been limited by particle agglomeration and process complexity.
This technology uses a tube furnace to control nitrogen partial pressure, selectively decomposing LTO and regulating the Li2Ti3O7 content. This facilitates charge transfer on the active material surface, improving rate capability and structural stability to achieve a Peukert constant of 1.26 or less. Applicable to hybrid vehicle batteries for regenerative braking, high-power electric tool cells, and frequency regulation ESS, it boosts capacity retention at high discharge rates simply by adjusting gas type and flow.
This invention was developed with support from the Ministry of Science and ICT for the discovery and investigation of new photoelectrochemical phenomena: controlling photoelectrochemical behavior through interface engineering.
This technology precisely controls the calcination temperature between 550°C and 800°C during the manufacturing of TiNb2O7 (TNO) anode materials to simultaneously achieve a crystalline and porous structure while doping the interior with carbon (C).
Conventional TiNb2O7-based anode materials suffer from low electron/ion conductivity and lithium-ion diffusion coefficients, leading to poor cycle stability and rate capability. Furthermore, existing synthesis processes are complex and delicate, making mass production difficult.
This technology uses a sol-gel method to react Ti and Nb sources to create a base precursor, which is then calcined between 550°C and 800°C to synthesize a porous TNO anode with a pore volume of 0.114–0.120 cm³/g and 0.09–0.42 wt% carbon doping. Applicable to fast-charging EV cells, high-safety graphite-alternative anodes, and industrial AGV batteries, it enables conductivity enhancement and pore formation in a single calcination step without requiring a separate carbon coating process.
This invention was developed with support from the Ministry of Science and ICT for research on the correlation between the physical properties of atomic-level controlled metal nanoclusters and their photoelectrochemical behavior.
This technology is an electrode structure that secures both physical elasticity and electrical connectivity by applying and curing a gel-type elastic electrolyte containing dispersed high-expansion active materials onto a conductive substrate, followed by the electropolymerization of conductive polymers within the electrolyte layer.
When using high-capacity, high-expansion active materials like silicon, the electrode structure often collapses during charge and discharge cycles due to volume changes, leading to increased interfacial resistance and the disruption of the conductive network.
This technology utilizes a polyurethane acrylate (PUA)-based gel electrolyte to absorb the expansion of active materials and employs electropolymerization to grow a conductive polymer network, such as polypyrrole, within the gel. This configuration maintains ionic and electronic conductivity without the need for binders or conductive additives. It is suitable for silicon-based high-capacity anodes and flexible batteries, preventing electrode cracking during repeated expansion while allowing for a higher proportion of active materials by eliminating auxiliary components.
This technology refines particles and lowers Na content by controlling the co-precipitation temperature of cobalt hexacyanoferrate (CoHCF), a Prussian blue analogue, to a low range of 0–10℃. This process reduces lattice distortion, thereby improving rate capability and cycle life.
Conventional cobalt hexacyanoferrate produced at room temperature or higher suffers from high Na content, leading to significant lattice distortion. Furthermore, an increased Co2+ ratio reduces redox activity and increases irreversibility, resulting in poor rate capability and limited long-term cycle life.
This technology involves co-precipitating cobalt and iron cyanide precursors with a citrate chelating agent at 0–10℃, followed by 10–15 hours of aging. This configuration achieves a Co3+ ratio of 0.3 or higher and a Na ratio of less than 1.5. Applicable as a cathode material for aqueous sodium-ion batteries and grid-scale energy storage systems, it offers the benefit of enhanced capacity retention during high-rate discharge simply by managing cooling temperatures.
This technology suppresses dendrite growth by coating the surface of lithium metal particles with nitrate/nitride-based inorganic particles and a binder, which in-situ forms a highly ion-conductive Li3N-rich SEI layer on the electrode surface during charge and discharge cycles.
Anodes using lithium powder have historically been difficult to process into slurries due to their high reactivity. Furthermore, lithium dendrites formed during cycling cause non-uniform current density, which limits battery lifespan.
This technology involves creating a slurry by mixing lithium metal particles, a binder, and nitrate/nitride-based inorganic particles (such as LiNO3) at a molar ratio of LiNO3 to the sum of LiNO2 and Li3N between 20:1 and 1:1. This forms a uniform protective layer on the anode surface, ensuring the stable formation of an SEI layer during battery operation. It can be applied to the manufacturing of anodes for lithium metal batteries, high-energy-density drones, and electric vehicles, paving the way for large-scale production of lithium metal anodes using existing slurry coating equipment.
