This technology measures electrode adhesion in an electrolyte-impregnated state that simulates actual battery operating conditions by performing SAICAS (Surface and Interfacial Cutting Analysis Systems) analysis using a micro-blade within a sealed, electrolyte-filled sample holder.
Conventional dry-state adhesion measurement methods fail to reflect the electrolyte-impregnated environment inside a battery. Consequently, it has been difficult to accurately predict and evaluate electrode-current collector delamination and electrode material isolation that occur during actual operation.
This technology utilizes a sample holder with a base and a rim secured by screws to maintain the electrode in an electrolyte-immersed state, allowing for quantitative measurement of adhesion at various depths by cutting and peeling to a target depth with a micro-blade. It can be applied to the development of new binder materials and electrode process quality control, providing baseline data for screening adhesion behavior weakened by electrolyte swelling prior to cell assembly.
This technology models 3D electrode structures based on the structural and electrical property data of actual electrode samples. It calibrates an initial model using heterogeneity and asymmetry parameters, then iteratively compares and adjusts the electrical and ionic conductivity similarities between the sample and the model to enhance the accuracy of the digital twin.
Existing 3D formation methods suffer from low alignment with physical objects. 3D reconstruction methods are limited by the time-consuming nature of the process and the potential for sample deformation during cutting and specimen preparation.
This technology consists of an iterative algorithm that identifies sample structures, extracts design parameters for constituent materials, and creates a primary model. It then generates a secondary model by incorporating material heterogeneity and asymmetry, and recalibrates binder distribution and active material/solid electrolyte surface coatings based on discrepancies between measured and modeled electrical and ionic conductivities. It can be applied to all-solid-state battery electrode design and simulation-based development processes for battery material companies, helping to reduce the number of prototypes required and shorten the time needed for electrode composition optimization.
This technology utilizes the self-healing properties of diarylbibenzofuranone (DABBF) through reversible carbon-carbon (C-C) bond formation and cleavage to create a 3D cross-linked network between polyacrylic acid (PAA) polymer chains, effectively suppressing the repetitive volume expansion of silicon anodes and maintaining electrode structural integrity.
Silicon anodes suffer from rapid capacity degradation due to excessive volume expansion of up to 400% during charge and discharge cycles, which causes internal electrode cracking, loss of electrical contact between active materials and conductive agents, and excessive SEI layer formation that increases resistance.
This technology forms a 3D cross-linked network by esterifying PAA with a DABBF cross-linker synthesized from a 3-hydroxypropoxy arylbenzofuranone (PABF) precursor, maximizing mechanical properties and adhesion at a composition of 1–5 wt% (recommended 2.5 wt%). It can be applied to high-capacity silicon-rich anodes or water-based electrode slurry production lines, where self-healing bonds repair expansion-induced fractures and delay the accumulation of electrode cracks.
This technology enhances interfacial stability in lithium secondary batteries by adding 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TFE) to the electrolyte, which forms a LiF-rich artificial Solid Electrolyte Interphase (SEI) layer on the anode surface.
While SiOx anodes offer high theoretical specific capacity, they suffer from structural pulverization due to repeated volume expansion and contraction during charge/discharge cycles. This exposes fresh surfaces to the electrolyte, accelerating side reactions and degradation.
This technology utilizes a TFE additive at 5 wt% to less than 10 wt% of the total electrolyte weight, forming a robust LiF-based SEI layer on the SiOx anode surface through electrochemical reduction. Applicable to high-capacity mobile device cells using silicon oxide anodes or NCM811 cathode-based automotive batteries, it reduces electrolyte consumption by pulverized anode surfaces and improves long-term cycle capacity retention.
This technology optimizes the crystal structure and surface properties of the final active material by adjusting the shear force applied during the mixing process based on the size difference between transition metal precursor and lithium precursor particles.
Conventional cathode active material manufacturing processes often suffer from disordered particle agglomeration and uneven mixing, leading to capacity fading and electro-polarization in secondary batteries. These methods also face limitations regarding stability during long-term charge-discharge cycles.
This technology applies higher shear force when the particle size difference exceeds 1µm. It utilizes a precursor mixing device that combines centrifugal force with secondary rod rotation, incorporating grinding structures when necessary to induce crushing and mixing, thereby controlling particle adsorption rates and crystal growth. Applicable to solid-state synthesis of cathode materials like LCO and NCM, powder mixing equipment manufacturing, and lines handling varied lithium particle sizes, it ensures homogeneous precursor mixing by simply resetting conditions even when raw material particle sizes change.
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 is an anode material manufacturing process that combines primary atmospheric heat treatment to enhance the electrical and lithium-ion conductivity of lithium-titanium-oxide (LTO) with secondary oxygen-atmosphere heat treatment to eliminate oxygen vacancies and suppress the memory effect.
While LTO is structurally stable, it suffers from low electrical and lithium-ion conductivity. Attempts to improve conductivity through methods like doping have been limited by the memory effect, where irreversible reactions lead to a reduction in battery capacity.
This technology involves primary heat treatment of the LTO base structure at 780°C in an atmospheric environment to secure conductivity, followed by secondary heat treatment in an oxygen atmosphere at the same temperature to reduce the oxygen vacancy area ratio to 9.38% or less. It can be applied to fast-charging electric bus batteries, auxiliary power sources for cold starts, and long-life energy storage cells, providing an anode that prevents cumulative capacity loss after repeated use without the need for metal doping.
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 refines particles and ensures crystal structure stability by reducing precursor mixing time or adjusting the concentration of citrate ions, a chelating agent, during the co-precipitation of cobalt hexacyanoferrate (CoHCF).
CoHCF synthesized using conventional methods resulted in large particle sizes, leading to lattice distortion and structural deformation during Na+ insertion and extraction during charge/discharge cycles. This caused issues with poor rate capability and reduced long-term cycle stability.
This technology inhibits particle growth and increases specific surface area by rapidly mixing precursor solutions within 20 seconds using direct mixing, or by lowering the citrate ion concentration to intentionally create iron vacancies, which mitigates crystal deformation during charge/discharge. It can be applied to large-capacity sodium-ion ESS, which avoids the supply chain burdens of lithium, and low-cost mobile power sources. It allows for the custom design of particle size and cycle life characteristics simply by adjusting process variables such as mixing time and additive concentration.
This technology determines the steady state of a battery by analyzing the stabilization of internal lithium-ion concentration, the elapsed time following current fluctuations, and the gradient of the measured voltage, subsequently estimating the State of Charge (SoC) using current and voltage data at that specific point.
Accurate SoC estimation typically requires Open Circuit Voltage (OCV) measurement. However, in real-world operating environments, it is difficult to secure sufficient rest periods, leading to estimation errors caused by the effects of overvoltage.
This technology establishes reference information under maximum and minimum current conditions in advance. It identifies the steady-state point after current changes—once lithium-ion diffusion has concluded—and calculates the SoC by comparing the measured values at that moment against the reference data. Applicable to EV BMS, ESS operation systems, and power tool battery pack indicators, it provides highly reliable remaining capacity information by filtering out overvoltage distortion, even during continuous operation without rest periods.
This technology involves a separator that features a ceramic coating layer on a porous substrate, with a core-shell structured fiber layer containing fire-extinguishing agents directly laminated on top. In the event of high-temperature ignition, the extinguishing agent in the core is released to suppress combustion and prevent thermal shrinkage.
Conventional separators are prone to short circuits due to thermal deformation and shrinkage of the polyolefin substrate at high temperatures, and fire suppression is difficult due to the volatility of the electrolyte during external combustion. Furthermore, methods involving the coating of functional particles often suffer from particle rupture during the lamination process, which reduces the fire-extinguishing effectiveness during actual ignition.
This technology utilizes a ceramic coating layer on top of a porous substrate and employs electrospinning to directly laminate a core-shell fiber layer—consisting of a phosphorus-based flame retardant in the core and a polymer in the shell—to protect the flame retardant during normal operation and release it when the shell melts during ignition. Applicable to electric vehicle pouch cells and large-scale ESS modules, it can reduce self-extinguishing time to under 30 seconds, effectively delaying the spread of thermal runaway to adjacent cells.
This technology features a battery structure and reuse method designed to allow for internal maintenance or electrolyte replenishment without disassembling the housing, achieved by strategically placing multiple ports for electrolyte injection, gas removal, and cleaning fluid circulation.
Secondary batteries often suffer from reduced capacity and power output as electrolytes degrade or deplete and internal gases accumulate over repeated charge/discharge cycles. Previously, reusing these batteries required disassembling or puncturing the housing, which involved complex processes and high capital investment.
This technology utilizes multiple ports penetrating the battery housing, equipped with locking caps. It allows for internal gas extraction to create a vacuum, followed by the injection of cleaning fluids and fresh electrolyte. The ports are positioned on opposite sides or diagonally to maximize fluid flow efficiency. This solution is ideal for EV battery recycling and ESS maintenance, enabling a circular model that extends the remaining life of cells through simple electrolyte replacement rather than disposal.
This technology is a dismantling system designed for the safe disassembly of cylindrical battery cases. It features a guide mechanism that detects the battery surface profile in real-time to automatically adjust cutting depth, a ceramic cutting blade, and an internal environment control system equipped with temperature sensors, fire suppression, and inert gas injection.
Conventional manual battery dismantling processes often result in inconsistent cutting depths depending on operator skill, leading to significant risks of internal electrode assembly damage, short circuits, and fires. Furthermore, these methods struggle to accurately cut deformed batteries.
This technology maintains a consistent cutting depth by utilizing a guide—comprising rollers, caps, and springs—that tracks the battery surface near the cutting blade, coupled with an actuator linked to a control unit. It employs a ceramic blade and prevents fires during dismantling through inert gas injection and temperature-linked fire suppression within the chamber. Applicable to end-of-life battery recycling pretreatment lines and battery failure analysis laboratories, it enables the intact recovery of electrode assemblies without the need for skilled labor and prevents workplace fire accidents.
This technology introduces N-(4-fluorophenyl)maleimide (FPMI), a dual-functional additive, into lithium secondary battery electrolytes. It enhances interface stability by forming an N-C=O functional group-based CEI on the cathode via oxidation and an LiF and N-C=O functional group-based SEI on the anode via reduction.
In high-energy-density secondary batteries using Ni-rich NMC cathodes and SiOx anodes, unstable electrode interfaces lead to continuous electrolyte decomposition, metal dissolution, anode volume expansion, and pulverization, which degrade cycle life.
This technology involves adding 0.5–5.0 wt% of FPMI to the electrolyte. Upon reduction, it forms an SEI layer on the anode containing high-mechanical-strength LiF and N-C=O functional groups, and upon oxidation, it forms a CEI layer on the cathode containing N-C=O functional groups. This suppresses both anode pulverization and cathode-electrolyte parasitic reactions. It can be applied to long-range EV cells combining high-nickel cathodes and silicon-based anodes, offering process advantages by managing degradation at both electrodes with a single additive.
This technology forms a coating layer containing a composite of nano-sized zirconium oxide (ZrO2) and the free radical scavenger tri-1-naphthylphosphine (TNP) to seal the large pores of polyimide (PI) separators and ensure safety.
While polyimide separators offer excellent thermal stability, their inherent porous structure often fails to sufficiently separate the anode and cathode during battery assembly, leading to internal short circuits and current leakage.
This technology involves dispersing ZrO2 and TNP in a PVdF-HFP binder solution and applying it to the PI separator surface via dip-coating to seal the pores. By coating at least 6.44 mg/cm² of the ZrO2-TNP composite, it prevents internal shorts, while the radical scavenging function of TNP enhances thermal properties at high temperatures. It can be applied to NCM811-based high-nickel EV batteries or energy storage cells exposed to high heat, fundamentally reducing the risk of internal shorts that could lead to thermal runaway.
This technology utilizes a ternary composite ionic structure—comprising a lithium or sodium salt, a plasticizer such as TEGDME or PEGDME, and an ionic liquid like EMIM-TFSI in a 0.9–1.1 : 0.9–1.1 : 0.9–1.1 molar ratio—combined with a UV-curable polymer to create a gel polymer electrolyte with a nano-canyon surface structure that offers both high electrical performance and mechanical stability.
Conventional solid-state polymer electrolytes suffer from low ionic conductivity. Conversely, gel polymer electrolytes have historically been limited by poor mechanical and environmental stability, leading to performance degradation under high-temperature operation or physical deformation.
This technology involves mixing and polymerizing a composite ionic structure (consisting of alkali salt, plasticizer, and ionic liquid in a 1:1:1 molar ratio) at 65–75 wt% with a UV-curable monomer to form a gel electrolyte with high ion dispersion and a nano-canyon surface structure 50–200 nm wide. Applicable to lithium and sodium-ion batteries, flexible pouch cells, and high-temperature power modules, it eliminates leakage risks while ensuring a large interfacial contact area and rapid ion transport paths.
This technology optimizes the formation rate and uniformity of primary particles, the level of nickel/lithium cation mixing within the crystal structure, and overall structural stability during heat treatment by controlling the size of cathode active material precursor particles.
Conventional cathode active materials have suffered from structural instability, poor rate capability, and degraded cycle life over repeated charge-discharge cycles. Furthermore, inconsistent precursor sizes have limited particle density and crystallinity.
This technology regulates nickel precursor particle size between 8μm and 16μm, while optimizing oxygen partial pressure (0.3–1.0 L/min) and the lithium source molar ratio (1:1.01–1.05) to achieve a layered structure with an I003/I104 peak ratio exceeding 1.74. Applicable to high-nickel NCM/NCA mass production lines, high-capacity EV cells, and co-precipitation reactor design, it allows for pre-designing crystal quality post-calcination simply by adjusting precursor-stage variables like stirring speed.
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.
