This technology is a device that detects internal short circuit faults early by analyzing voltage and current signals during the constant current charging process of lithium-ion batteries.
Existing internal short circuit detection methods have limitations, as they struggle to detect minute initial short circuits, posing a risk of fire or explosion.
By analyzing constant current charging signals to detect short circuits early, this technology can be applied to battery safety management to prevent accidents before they occur.
This technology relates to a device that measures battery terminal voltage and load current to estimate the state of charge using an electrical equivalent circuit model and a current-adaptive extended Kalman filter.
Conventional state-of-charge estimation methods have limitations in maintaining accuracy, as estimation errors increase when load current fluctuates rapidly over time.
By applying a current-adaptive extended Kalman filter, this technology can be integrated into battery management systems to robustly estimate the state of charge even under time-varying load current conditions.
This technology involves manufacturing a catalyst electrode for carbon dioxide reduction by forming a heterogeneous metal layer on a base material surface and immersing it in a hydrogen sulfide electrolyte to create nanostructures.
Existing carbon dioxide reduction catalyst electrodes have faced limitations in achieving high catalytic efficiency and productivity due to difficulties in forming uniform nanostructures and complex manufacturing processes.
By forming nanostructures through the hydrogen sulfide immersion method, this technology can be applied to carbon dioxide conversion processes to enhance catalytic efficiency and simplify the manufacturing process.
This technology is a method for manufacturing metal oxides for lithium-ion battery anodes by coating metal hydroxide precursors with a shell, performing thermal conversion, and then separating the materials to form the metal oxide.
Conventional metal oxide anode materials suffer from structural collapse during repeated charge and discharge cycles, making it difficult to maintain cycling stability under high-speed charging conditions.
By forming metal oxides with controlled structures through shell coating, thermal conversion, and separation, this technology can be applied to lithium-ion battery anodes to improve high-speed cycling stability.
This technology relates to a binder polymer for lithium secondary batteries that includes a polymer represented by a specific chemical formula.
Existing binders have limitations in that they lack sufficient adhesion between the electrode active material and the current collector, or they swell in the electrolyte, making it difficult to maintain a stable electrode structure.
By applying a polymer with a specific chemical formula as a binder, this technology can be used in lithium secondary battery electrodes to improve adhesion and electrode structural stability.
This technology relates to an anode active material for lithium secondary batteries capable of rapid charging, featuring a siloxane coating layer formed on the surface of carbon-based material powder.
Conventional carbon-based anode materials suffer from reduced lifespan and safety issues due to lithium plating and interfacial side reactions during rapid charging.
By stabilizing the interface with a siloxane coating layer, this technology can be applied to lithium secondary battery anodes to improve rapid charging performance and cycle life.
This technology relates to a solid electrolyte for all-solid-state lithium secondary batteries, composed of garnet-structured grains and grain boundaries containing Li-Al-O compounds.
Conventional garnet-based solid electrolytes have faced limitations in achieving stable, high ionic conductivity due to high grain boundary resistance and poor sintering properties.
By forming Li-Al-O-based grain boundaries, this technology improves sinterability and conduction pathways, thereby enhancing the ionic conductivity and stability of all-solid-state lithium secondary batteries.
This technology involves manufacturing silicon-based anode materials by applying a layered coating of the conductive polymer polyaniline to the surface of silicon-based active materials, thereby forming a stable solid electrolyte interface.
Conventional silicon-based anode materials suffer from electrode degradation and reduced conductivity due to significant volume expansion during charging and discharging, making it difficult to ensure a long cycle life.
By buffering volume changes and stabilizing the interface through a layered polyaniline coating, this technology can be applied to lithium secondary battery anodes to improve both conductivity and cycle life.
This technology relates to a solid-state electrolyte for pressure-free secondary batteries composed of an organic polymer with a specific chemical formula containing sulfur and ester/thioester bonds.
Conventional solid-state electrolytes require high pressure to ensure interfacial contact with electrodes, and they struggle to maintain ion conductivity and interfacial stability under pressure-free conditions.
By utilizing sulfur-ester bonded organic polymers, this technology can be applied to pressure-free secondary batteries, ensuring effective interfacial contact and ion conductivity without the need for external pressure.
This technology relates to a cathode material for lithium-sulfur batteries, featuring binary metals incorporated by loading nickel-thiourea and cobalt-thiourea compounds onto nitrogen-doped carbon nanotubes.
Conventional lithium-sulfur batteries suffer from capacity degradation and slow reaction rates due to the dissolution and diffusion of lithium polysulfides generated during charge and discharge cycles.
By loading binary metal catalysts onto nitrogen-doped carbon nanotubes, this technology accelerates the polysulfide reaction when applied to lithium-sulfur batteries, thereby improving both capacity and cycle life.
This technology relates to a dual-porous structure in which a lithium-affinity polymer and a second porous structure with pores of controlled FWHM are disposed on a first porous structure.
Conventional lithium metal electrodes have faced limitations in ensuring battery safety and longevity due to uneven lithium deposition and dendrite growth.
By controlling lithium behavior in stages through a dual-porous structure, this technology can be applied to lithium metal batteries to suppress dendrite growth and enhance electrode stability.
This technology relates to a porous structure comprising a lithium-philic polymer and a three-dimensional structure with pores of a controlled full width at half maximum.
Conventional lithium metal electrodes suffer from issues such as non-uniform lithium deposition during charge and discharge cycles, leading to dendrite growth and degradation of the electrode structure.
By forming a lithium-philic polymer porous structure through non-solvent induced phase separation, this technology can be applied to lithium metal batteries to promote uniform lithium behavior and enhance electrode stability.
This technology relates to a chelating-treated Prussian Blue analogue, in which defects and crystal water are reduced by mixing and co-precipitating a Prussian Blue analogue with a chelating agent.
Conventional Prussian Blue analogues have faced issues where rapid co-precipitation in aqueous solutions leads to structural instability due to defects and the presence of crystal water that hinders ion transport.
By reducing defects and crystal water through chelating treatment, this technology enhances structural stability, allowing it to be applied as a cathode material for seawater batteries to improve ion storage performance and cycle life.
This technology relates to particles for an anode interface protective layer in all-solid-state batteries, consisting of porous particles containing a metal capable of alloying with lithium and an anti-sintering layer disposed on their surface.
Existing lithium metal-based all-solid-state batteries have faced issues such as reduced cycle life, dendrite growth, and electrolyte decomposition due to uneven interfacial contact between lithium and the solid electrolyte, as well as electrochemical instability.
By stabilizing the interface with porous particles and an anti-sintering layer, this technology can be applied to all-solid-state battery anodes to improve interfacial contact and enhance the battery's lifespan and stability.
This technology implements a composite anode structure where germanium nanoparticles are uniformly dispersed within a carbon substrate without the need for a polymer binder. This is achieved by surface-modifying germanium nanoparticles, mixing and curing them with a self-assembling block copolymer and a thermosetting resin, and then carbonizing the mixture.
Conventional germanium anodes have faced limitations in achieving high-speed charge/discharge performance and long-term stability due to structural instability caused by volume expansion during charge/discharge cycles, particle aggregation, and loss of electrical contact.
By using surface-modified germanium nanoparticles that self-assemble within a block copolymer and are then mixed, cured, and carbonized with a thermosetting resin, this technology prevents nanoparticle aggregation and forms a stable, conductive carbonized film structure anchored in a carbon matrix. This can be utilized to enhance both the quality and productivity of secondary battery anode materials.
