This technology introduces Co-MOF-74, featuring 0.4–0.9 nm pores, as an electrode additive for cathode compositions. It selectively captures unstable Ni, Mn, and Co ions remaining on the cathode surface during charge/discharge, suppressing metal leaching and enhancing electrode interface stability.
Ni-rich cathodes, such as NCM811, have historically suffered from transition metal leaching caused by the reaction between unstable surface Ni4+ species and the electrolyte. These leached metal ions migrate to the anode, disrupting SEI layer formation and accelerating cathode structural degradation, which reduces long-term cycle performance.
This technology involves adding Co-MOF-74, synthesized from 2,5-dihydroxyterephthalic acid and Co(NO3)2·6H2O, at 5 wt% of the total cathode composition. The microporous MOF selectively traps transition metals to inhibit leaching, improves capacity retention during high-temperature cycling, and prevents the formation of electrolyte decomposition products on the anode surface. Applicable to EV battery packs and high-nickel cathode cell designs requiring long-term high-temperature operation, it slows degradation at both the cathode and anode simply by adding the additive, without requiring changes to the active material composition.
This technology utilizes triphenyl borate as an electrolyte additive. Through a Lewis acid-base reaction, it removes residual lithium (LiOH, Li2CO3) from the surface of nickel-rich cathodes and forms a stable Cathode-Electrolyte Interphase (CEI) protective layer via electrochemical oxidation.
Lithium byproducts such as LiOH and Li2CO3 remaining on nickel-rich cathode surfaces decompose during charge and discharge cycles, generating gas that causes cell swelling. In high-voltage environments, these byproducts accelerate electrolyte decomposition, leading to nickel leaching, structural instability, and reduced cycle life.
This technology involves adding borate-based compounds, such as triphenyl borate, to the electrolyte at a concentration of 1–3% (optimally 2%) to chemically bind and remove residual lithium while forming a protective layer on the cathode surface. This inhibits further electrolyte decomposition and transition metal leaching, preventing internal cell pressure buildup and improving cycle life. Applicable to nickel-rich lithium-ion batteries used in communication devices, transportation, and energy storage systems, it effectively reduces the burden of cathode washing processes and minimizes swelling defects through simple electrolyte additive integration.
This technology is a composite material manufacturing process that synthesizes metal oxide particles using a non-aqueous method, followed by a secondary heat treatment in a non-oxygen atmosphere to form a carbon film on the particle surface while precisely controlling the number of oxygen vacancies.
Metal oxide particles produced via conventional aqueous processes have limitations in particle size reduction, leading to long lithium-ion diffusion distances and suboptimal oxygen vacancies, which result in poor conductivity and reduced charge-discharge capacity.
This technology involves synthesizing metal oxide particles by performing a primary heat treatment on a base solution mixed with organic sources and liquid metal sources such as titanium alkoxide. It then undergoes a secondary heat treatment in a non-oxygen atmosphere at 500–700°C without adding external carbon, converting residual organic matter into a carbon film. Applicable to high-speed charging lithium secondary battery anodes and long-life energy storage system titanium oxide cells, it allows for custom design of oxygen vacancy density and charge-discharge capacity simply by adjusting the heat treatment temperature.
This invention was developed with support from the Samsung Science and Technology Foundation for research on developing high-capacity/fast-charging electrode materials using sequential gas-phase reactions.
This technology is a method for manufacturing a cellulose-based solid electrolyte that achieves both high ionic conductivity and mechanical properties by bonding ammonium ions to cellulose nanofibers via halogen ion mediation, followed by exchanging residual halogen ions with hydroxide ions.
Conventional gel polymer electrolytes face a trade-off: increasing liquid content to improve ionic conductivity compromises mechanical strength, while increasing polymer content to reinforce strength reduces ionic conductivity.
This technology treats cellulose nanofibers in a solvent containing ammonium and chloride (Cl-) ions to stably bond ammonium ions to the fiber surface, and utilizes primary metal cations like K+ to enhance the efficiency of ion exchange with hydroxide (OH-) ions. It can be applied to electrolyte membranes for metal-air batteries, such as zinc-air batteries, and flexible wearable power sources, offering the advantage of designing flexible, leak-proof cells using biomass-derived materials.
This invention was developed with support from the Ministry of Science and ICT for the development of high-power Pt-free photoelectrochemical-thermoelectric fusion devices using solar-waste heat energy.
This technology is a method for manufacturing electrode current collectors that forms porous copper thin films by utilizing hydrogen bubbles generated through high overpotential during copper electroplating as a template. It effectively removes residues within the pores through cross-washing with volatile organic solvents and distilled water.
Conventional lithium metal batteries suffer from the growth of lithium dendrites on the current collector. Furthermore, in the manufacturing process of porous electrodes, precursors and byproducts remaining inside the pores have limited initial charge-discharge efficiency.
This technology creates a porous copper structure by applying high current density during electroplating, followed by 9 to 19 cycles of alternating immersion washing with volatile organic solvents, such as ethanol, and distilled water to remove residues from the pores. This improves initial coulombic efficiency and long-term stability. Applicable to next-generation high-energy batteries using lithium metal anodes and anode-free cell current collectors, the large-surface-area 3D structure disperses local current to mitigate dendrite growth.
This technology implements a cross-linked polymer binder by ionically bonding dopamine-grafted polyacrylic acid (Dopamine-PAA) with the basic polymer polyaniline (PANI). Dopamine enhances adhesion through hydrogen bonding with the silicon surface, while PANI improves both mechanical properties and electrical conductivity through ionic bonding with the carboxylic acid of PAA.
Silicon anodes suffer from electrode pulverization due to volume changes of up to 400% during charge and discharge cycles. This disrupts electron transport pathways and increases electrolyte side reactions, leading to reduced efficiency and shortened lifespan. Conventional binders like CMC and SBR have limited capacity to withstand such physical stress.
This technology is composed of a mixture of polyacrylic acid (first copolymer) grafted with dopamine segments and 10 wt% polyaniline (second copolymer), forming a cross-linked structure through ionic bonding between carboxylic acid and nitrogen. This structure enhances the mechanical durability of the electrode and silicon adhesion, thereby improving reversible capacity and cycle life. It can be applied to high-capacity lithium secondary batteries using silicon or silicon-graphite composite anodes, preventing electrode detachment during repeated expansion with a peel strength of 0.6–0.7 N.
This technology combines the electrolytic copper foil manufacturing process and the graphene coating process into a single wet roll-to-roll system, enabling continuous graphene coating on the copper foil surface without the need for adhesives.
Existing CVD methods are discontinuous and costly, while dipping methods suffer from low productivity and complex processes due to the required use of adhesives.
This technology works by washing and drying the copper foil deposited in the electrolytic bath, then feeding it directly into a coating bath containing a graphene dispersion solution. The graphene concentration is kept constant by periodically replenishing it from an external reservoir before the final drying and winding stages. Applicable to mass production lines for lithium-ion battery anode current collectors and heat-dissipating/EMI-shielding copper foil, it allows for coating immediately after production, reducing both capital investment and process steps.
This invention was developed with support from the Ministry of Science and ICT for the development of composite intermediate materials through the manufacturing and functionalization of edge-partially oxidized graphene.
This technology involves heat-treating metal oxides in a nitrogen atmosphere prior to synthesizing lithium metal oxides. This process creates a secondary metal oxide with a lower oxygen ratio, resulting in a core-shell structure with internal voids and controlled grain size.
Conventional cathode materials often suffer from structural instability during charge-discharge cycles, low lithium diffusion coefficients, and high interfacial resistance, all of which lead to degraded electrochemical performance and shorter lifespans.
This technology heat-treats a primary metal oxide in a nitrogen-rich environment, such as NH3 gas, to refine grain size and produce a secondary metal oxide in the form of secondary particles containing internal voids. This is then calcined with lithium salt to synthesize the final lithium metal oxide. Suitable for high-power EV battery cells and fast-charging small batteries, the internal voids absorb volume changes during cycling, while the shortened diffusion paths accelerate lithium ion transport.
This invention was developed with support from the Samsung Science and Technology Foundation for research on developing high-capacity/fast-charging electrode materials using sequential gas-phase reactions.
This technology features a multi-layer electrode structure where an electrochemically stable LFP (lithium iron phosphate) active material layer is stacked as a protective layer over a high-energy-density NCM (nickel, cobalt, manganese) active material layer. This suppresses degradation at the interface with the electrolyte.
As electrodes become thicker, active material degradation accelerates at the top surface—the interface in contact with the electrolyte—leading to reduced power and lifespan. Conventional inert material coating methods have limitations, such as insufficient protection due to overly thin layers or complex manufacturing processes.
This technology involves forming a first active material layer containing NCM on a current collector, and then casting a second LFP active material layer on top to serve as an interfacial protective layer. By optimizing the thickness ratio of the two layers to 5:3, drying at 100–140℃, and using a 90:5:5 weight ratio, we ensure interfacial stability and durability. Applicable to lithium-ion battery electrodes for portable electronics, mobile units, power devices, and energy storage systems, this method minimizes energy density loss because the protective layer itself acts as an active material that contributes to capacity.
This technology features a gel-type polymer electrolyte membrane based on a triblock polymer with an [A]-[B]-[A] structure, consisting of vinylpyridine (A-block) and ethylene oxide (B-block). RAFT polymerization is used to form nanoporous structures, securing channels for ion transport.
Conventional polymer electrolytes, such as PVdF-HFP, have required the use of separate supports. Furthermore, there has been a trade-off between mechanical properties and ionic conductivity, limiting performance improvements.
This technology incorporates a cross-linking reaction using PEG into a triblock polymer synthesized via RAFT polymerization. This maintains mechanical strength without a support while significantly increasing ionic conductivity through nanochannels. It can be applied to pouch-type lithium secondary batteries and flexible/wearable power electrolyte membranes where leakage risks must be minimized, allowing for more flexible cell designs that eliminate the need for separators.
This technology improves the electrochemical properties of anodes by heat-treating a metal-organic framework (MOF) containing first and second metals to create a carbonized structure, then reacting it with a doping source to replace surface metals with single-atom doping metals.
Conventional anode active materials in nano-structured or bulk metal states suffer from structural instability during repeated charge-discharge cycles. They also face technical limitations, including poor rate capability and rapid capacity degradation.
This technology uses MOF heat treatment and substitution reactions to anchor noble metals like Ag, Au, and Pt onto the carbon surface as single atoms, filling micropores with metal atoms to ensure stability and conductivity. It can be applied to high-rate lithium-ion battery anodes and lithium metal nucleation hosts, reducing material costs by achieving conductive pathways with only trace amounts of noble metals.
This invention was developed with support from the Samsung Science and Technology Foundation for research on developing high-capacity/fast-charging electrode materials using sequential gas-phase reactions.
This technology forms convex and concave structures on the surface of a lithium metal anode and selectively applies a lithium-non-reactive barrier layer only onto the convex parts, directing lithium-ion intercalation and deintercalation to occur primarily within the concave areas.
When using lithium metal anodes, uneven lithium deposition on the surface leads to dendrite growth. This results in shortened battery life and reduced reliability.
This technology uses a transfer process with a master substrate to create convex and concave structures on the lithium base electrode surface. By placing lithium-non-reactive materials—such as polymers, oxides, or metals—only on the convex parts, electrochemical reactions are confined to the concave areas, where additional surface texturing further improves lithium deposition uniformity. This method can be applied to surface treatment for lithium metal, lithium-sulfur, and anode-free batteries, allowing for the simultaneous creation of patterns and protective layers in a single bonding step without the need for lithography.
This invention was developed with support from the Ministry of Trade, Industry and Energy for the development of lithium metal secondary battery technology based on ion-distribution-controlled electrolytes and micro-patterned electrode technology for dendrite suppression.
This technology forms an artificial cathode-electrolyte interphase (CEI) layer by coating the surface of Ni-rich NCM cathode active materials with lithium tetramethylsilyl borate (LTB). This layer captures F- ions, which are impurities in the electrolyte, and enhances interfacial stability.
Ni-rich NCM cathodes have historically faced issues with electrolyte decomposition caused by Ni4+ species in high-voltage and high-temperature environments. This leads to transition metal dissolution, which significantly limits cycle life.
This technology involves adding LTB, synthesized by reacting tris(trimethylsilyl) borate with lithium trimethylsiloxide, to the cathode slurry to form a 1–20nm thick artificial CEI layer during electrode manufacturing. LTB undergoes an SN2 reaction with F- ions to produce fluorotrimethylsilane, preventing fluorine-related side reactions and increases in surface resistance. Suitable for high-voltage cells in EVs and power tools that operate frequently at high temperatures, it allows for improved 55℃ cycle performance without additional coating equipment by reducing the binder content proportionally to the additive amount.
This technology involves surface modification by coating lithium trimethylsiloxide (LiOTMS) onto the surface of high-nickel NCM cathode active materials. It removes HF generated within the battery and suppresses side reactions with the electrolyte.
High-nickel cathode materials, such as NCM811, have faced issues with interfacial instability caused by Ni4+ during charging and accelerated electrolyte decomposition. Furthermore, hydrogen fluoride (HF) generated by reactions with moisture leads to transition metal dissolution and electrode degradation.
This technology involves mixing LiOTMS with the cathode active material in an NMP solvent, applying it to the surface, and heat-treating it at 600–800°C (optimally 700°C). During this process, LiOTMS undergoes pyrolysis to form a stable inorganic surface film. Applicable to ESS cells requiring long lifespans and high-nickel cathode surface treatment processes, it provides a simple way to reduce HF-induced degradation by adding only a coating step to existing slurry processes.
This technology is a fiber-reinforced solid electrolyte that improves ionic conductivity, water absorption, and mechanical flexibility by stepwise functionalizing sugarcane bagasse-derived base fibers with enzymes, functional groups such as methyl or carboxymethyl, chitosan, and ammonium compounds.
Conventional polymer electrolytes suffer from low ionic conductivity. Gel electrolytes, which are used to address this, face limitations in implementing flexible batteries due to a trade-off: increasing electrolyte content degrades mechanical properties, while increasing polymer content reduces ionic conductivity.
This technology utilizes a biomass-based sugarcane bagasse fiber structure, enzymatically hydrolyzed and chemically bonded with chitosan and ammonium-based functional groups to create absorbent sites. This structure retains a large amount of hydroxide ions, simultaneously enhancing ionic conductivity and flexibility. It can be applied to flexible zinc-air batteries, wearable power sources, and alkaline anion exchange membranes, offering the eco-friendly advantage of converting agricultural byproducts into high-value electrolyte materials.
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.
