This technology is about the manufacturing method of iron-doped cathode active material.
Among the cathode materials used in lithium-ion batteries, LiMn2O4 (LMO) is a promising material because it is environmentally friendly and inexpensive, but has the disadvantage of having an unstable structure, causing manganese to dissolve into the electrolyte. To improve these problems, this technology proposes a method of doping iron into lithium manganese oxide.
The cathode active material according to this technology can improve structural stability and electrochemical properties by doping iron into lithium manganese oxide, and is environmentally friendly by using relatively inexpensive iron, while also having an economical advantage in manufacturing cost, which is expected to contribute to improving the competitiveness of the secondary battery industry.
This technology was developed through support from the National Research Foundation of Korea's functional interface structure research project for lithium cathode-based high-capacity energy storage.
This technology is about an image processing method and a way to remove blur from images.
Blur is one of the main causes of image quality deterioration. Often, when the exposure time is long, blur may occur in the acquired image due to the shaking of the image sensor. In order to improve this problem, this technology proposes a method for removing non-uniform motion blur using estimated non-uniform motion blur information and multi-frames using multi-frames containing non-uniform motion blur.
This technology estimates non-uniform motion blur information using the local area of the multi-frame image, and uses the estimated non-uniform motion blur information to remove the blur of the multi-frame of the original resolution. Not only can it achieve clear image quality, but it can also improve the speed of removing blur from images with large resolution.
This technology is about the manufacturing method of a quaternary cathode active material.
When synthesizing a quaternary precursor with additional aluminum introduced in an existing ternary system, it is difficult to synthesize the material when using the coprecipitation method, and in particular, an additional aluminum doping process must be added after synthesizing the ternary NCM precursor, which has the disadvantage of making the process complicated. To solve this problem, this technology proposes the use of solvothermal synthesis.
The method for producing a positive electrode active material according to this technology has fewer control variables compared to the coprecipitation method, does not require the introduction of an additional aluminum doping process, and uses a simple solvothermal synthesis method without changing the existing process. Therefore, it is possible to synthesize a quaternary cathode active material precursor (NCMA precursor) containing aluminum in the precursor synthesis step, and it is expected to increase the commercial applicability of quaternary positive active materials by enabling the synthesis of high-quality spherical positive electrode active materials with uniform sizes.
This technology was developed through support from the National Research Foundation of Korea's functional interface structure research project for lithium cathode-based high-capacity energy storage.
This technology relates to a method of manufacturing carbon nanotubes, and a method of synthesizing various types of carbon nanotubes by controlling the injection timing of raw materials using the decomposition temperature of the material.
The physical properties of carbon nanotubes are determined by the diameter and chirality of the nanotubes, but existing technologies have the disadvantage of having to remove the support after synthesizing nanotubes because it is difficult to obtain catalysts of constant and uniform size. This technology proposes a method for manufacturing carbon nanotubes that can control the physical properties of synthesized carbon nanotubes using the decomposition temperature, which is a unique physical property of the material.
This is a groundbreaking technology that can create carbon nanotubes of various shapes by changing the injection method of catalysts, additives, and carbon sources.
This technology was developed through support from the National Research Foundation of Korea's ultimate tensile strength carbon nanotube fiber manufacturing technology research project.
This technology is about the manufacturing method of a composite for the functional transmission layer of a high-capacity lithium-sulfur battery
Lithium-sulfur batteries, which are emerging as a new alternative, have high theoretical capacity and high energy density and are being studied as next-generation batteries. However, the shuttle phenomenon, which is a problem of lithium-sulfur batteries, must be alleviated and the electrical conductivity of sulfur must also be improved. To achieve this goal, this technology proposes a method using reduced graphene oxide and porous vanadium nitride.
This technology can alleviate the shuttle phenomenon of lithium-sulfur batteries by improving the adsorption capacity with lithium polysulfide and promoting oxidation-reduction dynamics. It has excellent electrical conductivity and improves the utilization of sulfur by compensating for the low electrical conductivity of sulfur. This technology has the advantage of cycle stability and high capacity, and is expected to greatly contribute to the commercialization of lithium-sulfur secondary batteries.
This technology was developed through support from the National Research Foundation of Korea's functional interface structure research project for lithium cathode-based high-capacity energy storage.
This technology relates to a method of manufacturing an active optical waveguide, which includes quantum dots that can fluoresce and amplify optical signals, and forms the quantum dots using a continuous oscillation laser.
With the existing technology, it is not easy to control the size or distribution while maintaining the characteristics of the quantum dots, and the process costs are high, making quantum dots practically impossible. There was a problem with not being able to utilize it. In order to solve this problem, this technology proposes a method of manufacturing a buried active optical waveguide containing quantum dots by inducing the precipitation of quantum dots in glass using a continuous oscillation laser.
By doing so, not only can a buried optical waveguide of the desired shape be manufactured, but it can also be very usefully applied in the fields of electronic device and optical irradiation manufacturing.
This technology was developed through support from the National Research Foundation of Korea's research project on nanocrystal-containing optical glass for optoelectronic devices.
This technology is about the production of oxide/polymer hybrid solid electrolyte membranes using composite ceramic materials and all-solid-state lithium secondary batteries.
LLZO used in all-solid-state batteries has the problem of reacting with moisture and carbon dioxide at room temperature to generate Li2CO3 on the surface, resulting in Li loss and reduced ionic conductivity. To solve these problems, this technology proposes a hybrid electrolyte of a ceramic composite composition for secondary batteries using LALZO (Li6.28Al0.24La3Zr2O12) and h-BN (Hexagonal Boron Nitride) as active ingredients.
This technology significantly solves the problems of lithium loss, reduced ionic conductivity, and reduced interfacial stability, improving electrochemical properties, and lithium ions applied with existing organic liquid electrolytes. It is expected that it can replace batteries (LIBs).
This technology was developed through support from the National Research Foundation of Korea's research project on functional interface structures for lithium cathode-based high-capacity energy storage.
The present invention relates to a stave and to the structure inside a blast furnace that produces molten iron while charging coke and iron ore.
If the cooling pipe of the stave is damaged due to the inevitable shock inside the blast furnace, and the stave cooling pipe is damaged, it must be repaired immediately. However, due to the high pressure and high temperature environment inside the blast furnace, it is difficult to repair the stave without stopping the blast furnace, so manufacturing costs increase as the operation of the blast furnace is stopped to repair the stave. This technology seeks to propose a stave that can automatically repair damaged cooling pipes without stopping the operation of the blast furnace.
This technology repairs damaged parts of cooling pipes in real time, allowing staves to be repaired without stopping the operation of the blast furnace, thereby minimizing economic losses and contributing to the safety and lifespan of the blast furnace, thereby improving productivity in the steel industry.
본 기술은 한국교통연구원의 화물차 운행 중 연료저감을 위한 공기저항 및 공기와류 저감장치 연구과제 지원을 통해 개발되었습니다.
This technology is about a material for a lithium-sulfur battery anode, and is about a lithium-sulfur battery using carbon nanofibers doped with iron and nitrogen.
During the charging and discharging process, polysulfide with lithium as an end dissolves in the electrolyte and moves between the anode and the cathode, resulting in loss of anode active material and deterioration of cycling performance due to the shuttle effect. This technology solves these problems through carbon nanofibers doped with iron and nitrogen. I suggest.
The manufacturing method of iron and nitrogen-doped carbon nanofibers according to this technology has excellent physicochemical adsorption performance for lithium polysulfide through improved porosity and increased polarity within the structure, making it possible to implement lithium sulfur batteries with improved electrochemical stability, making it a necessary technology for new secondary batteries.
This technology was developed through support from the National Research Foundation of Korea's functional interface structure research project for lithium cathode-based high-capacity energy storage.
The present invention relates to a cathode active material for lithium ion secondary batteries, and to an iron-doped lithium excess oxide cathode active material and a manufacturing method.
Among secondary batteries, lithium-ion batteries (LIB) using an anode material with a layered structure have the highest energy density, so NCM batteries, which are ternary batteries of nickel (Ni), cobalt (Co), and manganese (Mn), are widely used. However, due to limited availability and high prices, research on Li2MnO3 (LMO), an overlithiated layered oxide (OLO) material, is being conducted. Although progress was being made, it had the disadvantage of low lifespan stability. To solve these problems, this technology proposes a method of doping iron to reduce costs and improve structural stability and rate characteristics.
The cathode active material of this technology does not use any expensive cobalt or nickel in Li2MnO3, but dopes it with cheap and eco-friendly iron. It is a groundbreaking technology to be used in the Iithum battery industry as it has cost reduction effects and excellent performance with capacity and long-term cycle stability as much as existing LiNiMnCoO2 (NCM) batteries.
This technology was developed through support from the National Research Foundation of Korea's research project on functional interface structures for high-capacity energy storage based on lithium cathodes.
