This technology is a 2-circuit process that simultaneously extracts and separates nickel and cobalt using D2EHPA and Versatic Acid-10 extractants under specific pH and organic-to-aqueous (O/A) ratio conditions, eliminating the need for conventional 3-circuit extraction and crystallization processes.
The conventional 3-circuit process requires approximately 45 to 60 mixer-settler stages, leading to high capital expenditure, increased operating costs due to the additional crystallization step, excessive consumption of pH adjusters, and significant wastewater generation.
By simplifying the process into a 1st circuit (impurity removal) and a 2nd circuit (nickel/cobalt extraction) and applying optimized pH ranges (e.g., 3.4–3.6 for the 1st circuit, 6.2–6.4 for the 2nd circuit) and O/A ratios for each stage, this technology produces high-purity nickel/cobalt mixed solutions without a crystallization step, offering a practical solution for the development of next-generation lithium secondary battery cathode materials.
This technology introduces a hydrophobic fluorinated graphene oxide (FGO) coating layer on one or both sides of a separator. It reacts with lithium ions released from the lithium metal electrode to form lithium fluoride (LiF), thereby suppressing dendrite growth and enhancing interfacial stability.
When using lithium metal anodes, side reactions with the electrolyte lead to dendrite formation, which causes non-uniform current distribution, electrolyte decomposition, short circuits, reduced coulombic efficiency, and shortened battery lifespan.
By forming a 1–3㎛ thick hydrophobic FGO coating layer on the separator substrate, this technology serves as a foundation for improving the maturity of secondary battery separator technology.
This technology is a multifunctional cathode active material that forms a 3D porous network within particles through the inverse vulcanization of vinylphosphonic acid (VPA) and sulfur. It physically encapsulates sulfur allotropes while chemically immobilizing lithium polysulfides via covalently bonded VPA moieties.
Conventional lithium-sulfur batteries suffer from short lifespans due to the shuttle effect caused by polysulfide dissolution. Furthermore, their performance is limited by low electrical conductivity, slow redox kinetics, restricted active material utilization, complex electrode manufacturing processes, and the unstable structure of vulcanized polymers.
This technology is expected to overcome the limitations of existing materials when applied to lithium secondary battery cathodes by 1) synthesizing spherical microparticles (SVPA) with a hierarchical porous structure through a one-pot reaction of sulfur and VPA at 160°C.
This technology involves forming a lithium layer on a solid electrolyte layer, depositing a metal protective layer to prevent lithium oxidation, and using a focused ion beam (FIB) device to process it into a micro-electrode. This ensures that the lithium remains unoxidized even when exposed to external air, enabling real-time transmission electron microscopy analysis.
Conventional lithium-ion supply electrodes suffer from immediate oxidation upon air exposure, which degrades the lithium-ion conductivity required for analysis. Other technical limitations include vibration issues caused by the need to place glove boxes near microscopes, as well as reduced image clarity and solidification risks associated with liquid electrolytes.
By adopting a stacked structure of solid electrolyte/lithium layer/metal protective layer (Cu, Au, Ag, Ni, etc.) to block lithium oxidation, this technology can be integrated into secondary battery electrolytes, contributing to process simplification and cost reduction.
This technology controls the magnesium content in sub-battery grade, low-grade lithium carbonate to 1–2 mol%, forming truncated octahedron-shaped particles. This prevents deposition within the reactor and improves both process efficiency and the electrochemical performance (cycle life and discharge capacity) of the cathode active material.
Previous methods faced challenges including high cost due to the use of high-purity lithium carbonate, clogging (deposition) on reactor walls and impellers during the synthesis process, and limitations in the cycle life and discharge capacity ratio of cathode active materials compared to conventional doping methods.
This technology involves reacting carbonate with an aqueous lithium sulfate solution containing magnesium sulfate (1–2 mol%) to produce truncated octahedron-shaped lithium carbonate. This is then mixed with an NCM hydroxide precursor at a weight ratio of 1:1.01–1.05 and calcined at 800–900℃ to synthesize the cathode active material, thereby increasing the value-added potential for lithium secondary battery cathode applications.
This technology utilizes a thermally induced phase separation (TIPS) process to create a porous electrode structure in which conductive agents, active materials, and electrolytes are uniformly impregnated within a polyvinylidene fluoride (PVDF) polymer, achieving both flexibility and high energy density.
Conventional lithium secondary battery electrodes are rigid, leading to electrode detachment and structural collapse under physical deformation. Conversely, reducing the loading amount to improve flexibility results in a decrease in energy density.
By mixing polyvinylidene fluoride (PVDF) polymer, conductive agents, active materials, and electrolytes in a specific mass ratio (1:0.05–0.3:0.1–0.4:2–5) and subjecting the mixture to heating and cooling between 100–200°C to induce phase separation, this technology offers a practical solution for the development of next-generation secondary battery electrolytes.
This technology analyzes real-time battery characteristics (temperature, impedance, state of health, etc.) and actively applies a "synthetic surface pressure" to the battery via piezoelectric elements. This pressure incorporates high-frequency (for anode/cathode impedance), low-frequency (for volume changes during charge/discharge), and ultra-low-frequency (for cycle-based degradation) components to control interfacial resistance and improve battery lifespan.
Internal volume changes and the reduction of separator pores during battery charge/discharge and degradation (such as SEI layer growth) increase interfacial resistance, leading to performance degradation and shortened battery life. Conventional static load methods have struggled to effectively address these dynamic changes.
This technology includes a battery characteristic measurement unit and a piezoelectric-based synthetic surface pressure application unit. By simultaneously applying ultrasonic-range high-frequency surface pressure and low/ultra-low-frequency surface pressure linked to charge/discharge cycles based on the battery's state, it can be used to reliably secure the properties required for secondary battery anode materials.
This technology is a process for controlling the quality of metal composite hydroxide precursors during continuous co-precipitation by measuring and predicting the concentration of residual sulfate in the reactor in real-time using Raman spectroscopy.
In conventional co-precipitation methods using sulfate raw materials, unreacted sulfate remains as an impurity in the precursor, which degrades the performance of the cathode active material.
By measuring the Raman spectrum of the metal composite hydroxide solution (specifically the intensity of the main sulfate peak at 980 cm⁻¹) and comparing it with pre-established Raman spectra for standard sulfate concentrations, this technology enables the measurement and prediction of residual sulfate levels in the reactor, thereby improving both the performance and commercial viability of secondary batteries.
This technology improves battery lifespan and capacity by refining lithium compound clusters that become irreversibly inactivated within the anode during repeated charge/discharge cycles. This process increases the contact area with reduced transition metals, allowing for the gradual replenishment of lithium ions within the cell.
Repeated charging and discharging of lithium-ion batteries typically leads to capacity loss and shortened lifespans due to lithium ion consumption caused by dendrite formation on the anode surface and the structural collapse of cathode materials.
This technology utilizes porous VF3 (vanadium trifluoride) nanoparticles (10–100 nm in size with 2–50 nm pores) as an anode material. When combined with a layered Li2NiO2 cathode and operated across a voltage range wider than the nominal range (4.2–4.3V charging, 3V discharging), it secures reversibility and replenishes internal lithium ions. This approach simplifies manufacturing processes and contributes to cost reduction in secondary battery anode production.
This technology improves the physicochemical stability of electrode surfaces by coating lithium foil with a specific non-ionic surfactant polymer (e.g., Pluronic series) to form a solid protective layer.
The use of lithium metal anodes has historically been hindered by issues such as dendrite growth, dead lithium formation, battery short circuits, increased resistance, and degradation of capacity and performance.
By dissolving non-ionic surfactant polymers (such as L61, L121, F127, F68, F87, P105, etc.) in a carbonate-based solvent to form a layered protective coating 10nm to 10μm thick on the lithium foil surface, this technology is expected to overcome the limitations of existing materials when applied to secondary battery anode materials.
This technology involves adding a combination of metal salts, a hydroxyl-containing polymer (e.g., PEG), and silica with a specific particle size to an aqueous electrolyte. This forms a uniform SEI layer on the anode surface, suppressing dendrite growth and side reactions (hydrogen evolution).
Aqueous secondary batteries have faced issues such as side reactions caused by water decomposition (oxygen/hydrogen evolution), the formation and growth of dendrites on the anode surface during repeated charge/discharge cycles, and the resulting internal short circuits and reduced battery lifespan.
This technology incorporates silica with an average particle size of 0.1–0.5㎛ and a hydroxyl-containing polymer into an aqueous electrolyte at an optimal ratio (silica content: 20 to less than 40 parts by weight per 100 parts by weight of polymer). This imparts non-Newtonian fluid properties, improves metal ion conductivity, and uniformly controls electrodeposition on the anode surface, which can be applied to improve the stability and lifespan of secondary battery anode materials.
This technology forms an aerogel-type separator coating layer by compositing mesoporous tungsten carbide (meso WC) with reduced graphene oxide (rGO). It suppresses the dissolution and shuttle effect of lithium polysulfides that occur during lithium-sulfur battery operation and induces catalytic reactions.
During the charge/discharge process of lithium-sulfur batteries, a 'shuttle effect' occurs where lithium polysulfides generated at the cathode dissolve into the electrolyte and migrate to the anode, leading to issues such as active material loss, capacity reduction, decreased coulombic efficiency, and degraded electrode performance.
This technology involves mixing mesoporous tungsten carbide, obtained by heat-treating tungsten oxide monohydrate, with graphene oxide in a specific ratio (2–5:1), followed by an autoclave reaction and reduction process to produce an aerogel-structured composite. By coating this onto a separator, it can be used to enhance both the quality and productivity of secondary battery separators.
This technology utilizes waste coffee grounds as both a carbon source and a reducing agent to produce metal (Ge, Sn, etc.)-carbon composite anode active materials through complex formation with metal oxides and a single heat treatment process.
Existing methods involving the heat treatment of metal oxides alone suffer from incomplete reduction, resulting in low electrochemical performance (specific capacity) as anode active materials, while previous coffee ground recycling technologies have faced economic challenges due to complex high-purity carbon refining processes.
This technology simplifies the process by mixing metal oxides with dried coffee grounds in a 7:3 weight ratio, performing ultrasonic treatment with a dispersion medium, and conducting heat treatment at temperatures between 500°C and 700°C in a nitrogen/hydrogen atmosphere to simultaneously achieve carbonization and reduction. By producing a composite in which metal is uniformly dispersed within an amorphous carbon matrix, this method can be applied to secondary battery anode materials, contributing to process simplification and cost reduction.
This technology involves a solvothermal synthesis method using an optimized volume ratio of isopropanol and glycerol to produce V2O3/C composite anode active materials with a network structure of interconnected spherical nanoparticles.
Vanadium oxide (V2O3) has historically suffered from low electrical conductivity and structural instability, leading to issues such as capacity degradation, poor rate capability, and limited cycle life when used as an anode in lithium-ion batteries.
By utilizing a mixed solvent of isopropanol (43) and glycerol (7) for solvothermal synthesis (150–200°C) followed by heat treatment (500–1000°C), this technology produces micro-sized spherical V2O3/C particles with an integrated carbon network. This improves conductivity and structural stability, making it ideal for enhancing both the reliability and efficiency of secondary battery anode materials.
This technology is a process for manufacturing high-capacity, high-stability layered cathode materials. It uses solvothermal synthesis to directly produce quaternary (NCMA) cathode active material precursors from a mixture of nickel, cobalt, manganese, and aluminum nitrates, which are then mixed with lithium sources and heat-treated.
Conventional co-precipitation methods require complex control of variables such as ammonia concentration, pH, and stirring speed when doping with aluminum, making the process cumbersome. Furthermore, there has been a need to address the structural instability and reduced cycle life associated with high-nickel (Ni≥0.8) cathode materials.
This technology is ideal for improving both the reliability and efficiency of lithium secondary battery cathode materials. It involves heat-treating nitrate-based (Ni, Co, Mn, Al) precursors in an ethanol solvent at 150–250°C to synthesize uniform spherical particles, followed by mixing with a lithium source (e.g., LiOH·H2O) and performing a two-stage heat treatment at 400–900°C.
