WO2012134029A1 - 고분자로 치환된 실리콘 나노입자와 자기조립성 블록공중합체를 포함하는 고성능 리튬-폴리머 전지 - Google Patents
고분자로 치환된 실리콘 나노입자와 자기조립성 블록공중합체를 포함하는 고성능 리튬-폴리머 전지 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/60—Selection of substances as active materials, active masses, active liquids of organic compounds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a high performance lithium polymer battery and a method of manufacturing the same, and more particularly, to a high performance lithium polymer battery including silicon nanoparticles substituted with a polymer and a self-assembled block copolymer.
- lithium batteries have been in the spotlight as the next generation energy sources that can solve global warming due to their high energy density and renewable characteristics, and have been applied to various areas.
- Lithium batteries are already widely used in portable electronic devices, but the development of next generation large capacity lithium batteries to replace gasoline energy is still difficult and slow.
- the core of the next-generation cell must have an energy density of 200 Wh / kg or more, must be capable of charging and discharging more than 1000 times, and must have durability operating at -40 to 85 ° C.
- a lithium-polymer battery basically consists of a positive electrode, a negative electrode and a polymer electrolyte.
- the positive electrode of a lithium-polymer battery is composed of a positive electrode active material (active material), a conductive material, a binder, and the like, which is commonly used as nickel powder, cobalt oxide, titanium oxide, Ketjen black, acetylene black, furnace black, graphite, Carbon fiber, fullerene, and the like, and the positive electrode active material is also known in the art, which is a compound capable of reversible intercalation / deintercalation of lithium, LiMn 2 O 4 , LiCoO 2 , LiNiO 2 , LiFeO 2 and the like are used. Therefore, in order to improve performance, improvement of the negative electrode active material and the polymer electrolyte is required. Accordingly, studies have been made to improve the performance of the negative electrode active material and the performance of the polymer electrolyte.
- negative electrode active materials were mainly used for products using graphite, but there is a limitation in that the charge / discharge capacity is small, and methods of increasing the charge / discharge capacity of graphite are known to have limitations in commercial application. Accordingly, studies on high-capacity negative electrode active materials such as metal silicon have been conducted, but during charge / discharge, volume expansion due to alloying of lithium and silicon, such as Li 1.71 to 4.4 Si, is increased by more than four times than that of silicon itself. As the discharge continues, the silicon electrode structure is broken and the discharge capacity is drastically lowered to 20% or less of the initial capacity, thereby losing the function as an electrode active material.
- melt spinning which melts at a high temperature and quenches in a short time, has been reported as a method for amorphousizing crystalline silicon, but industrial use is limited.
- a polymer electrolyte composed of a salt and a polymer has been developed in order to obtain safety that can prevent the risk of fire and durability that can prevent decomposition of the electrolyte.
- the polymer electrolyte is composed of a polymer, a salt, a non-aqueous organic solvent (optional), and other additives, and exhibits an ionic conductivity of about 10 -3 to 10 -8 S / cm at room temperature, and has high ion conductivity and charge / discharge.
- Good mechanical and electrical stability in cycle Initial researches have been conducted on solid polymer electrolytes prepared by adding lithium salts to polyethylene oxide and polypropylene oxide, melting them in co-solvents, but lacking mechanical stability of PEO chains above the glass transition temperature (Tg). There have been studies to improve the mechanical stability to improve this, but when applied to the lithium polymer battery, a problem that the charge / discharge characteristics are lowered.
- the problem to be solved in the present invention is to develop a negative electrode active material for a lithium-polymer battery that can withstand the volume change caused by lithium ions in the repeated charge / discharge process.
- Another problem to be solved by the present invention is to develop a polymer electrolyte for a lithium-polymer battery satisfying both mechanical and electrical properties.
- Another problem to be solved by the present invention is to provide a high-performance lithium-polymer battery by optimizing a negative electrode active material capable of withstanding the volume change caused by lithium ions during the charge / discharge process and a polymer electrolyte that simultaneously meets mechanical and electrical properties will be.
- a lithium polymer battery includes: a negative electrode including negative electrode active particles having a polymer formed on a surface thereof; anode; And a polymer electrolyte comprising a block copolymer; High performance lithium-polymer secondary battery comprising a.
- an anode comprising a cathode active particle having a polymer formed on a surface thereof; anode; And a polymer electrolyte.
- the present invention in another aspect, the negative electrode; anode; And a polymer electrolyte, wherein the polymer electrolyte is a secondary battery comprising a self-assembled block copolymer.
- the negative electrode comprising a silicon nanoparticles bonded polymer; anode; And a polymer electrolyte; wherein the negative electrode has a thickness of 60 nanometers or less.
- the present invention provides a self-assembled block copolymer comprising a hydrophobic block and a hydrophilic block; And a nonionic plasticizer, a nonvolatile ionic liquid, or a combination thereof.
- the present invention is a negative electrode for a secondary battery including silicon nanoparticles having a polyethylene oxide bonded to a surface thereof as a negative electrode active material.
- the negative electrode active particles mean particles in the negative electrode that undergo a volume change by lithium ions during the charge / discharge process of the battery.
- the formation of the polymer means that the polymer is bonded to the surface of the negative electrode active particles by physical or chemical methods.
- the nonionic plasticizer is a material which does not substantially dissociate into ions and lowers the glass transition temperature of the polymer
- the nonvolatile ionic liquid is a material that does not volatilize and is bound to ions but exists in a liquid state. do.
- the polymer formed on the surface of the negative electrode active particles serves as a buffer to withstand the volume change experienced during the charging / discharging of the particles with lithium ions. It is advisable to use polymers that are highly transferable to lithium ions so that they do not interfere with access.
- the negative electrode active particles use silicon particles whose basic capacity is easy to bond with the polymer, and the polymer is a polyalkylene oxide-based polymer having good ion transportability to lithium ions. desirable.
- the polyalkylene oxide may be polyethylene oxide, polypropylene oxide, polyethylene propylene oxide, polyethylene oxide is particularly preferred.
- the molecular weight of the polymer can be appropriately adjusted according to the degree of expansion, the weight average molecular weight is preferably 200 to 20,000, more preferably 500 to 10,000, most preferably 1,000 to 5,000.
- the molecular weight is too small, it may be difficult to provide sufficient resistance due to the volume change occurs during the charging / discharging, if too large may cause difficulty in manufacturing or binding to the particles.
- the silicon particles are silicon particles capable of bonding with lithium ions, and are preferably amorphous particles so as to increase the charging capacity of the secondary battery.
- the silicon particles may be nanoparticles, preferably nanoparticles in the range of 1 to 100 nm, and more preferably about 10 nm.
- the weight ratio of the polyalkylene oxide and the silicon nanoparticles in the silicon nanoparticles to which the polyalkylene oxide is bonded may be adjusted to the volume expansion degree of the lithium ion battery, preferably 1:10 to 10
- the range is 1: 1, more preferably in the range of 7: 3 to 3: 7.
- the resistance to volume expansion may not be sufficient in some cases, and when the content of the polyalkylene oxide is too large, the characteristics of the battery may be degraded when charging / discharging is repeated.
- the negative electrode including the silicon particles surface-treated with the polyalkylene oxide has a silicon particle surface-treated with the polyalkylene oxide as a main component, and helps the electrical conduction such as carbon, polyvinylidene chloride Note does not limit the addition of intermediates.
- the negative electrode may be prepared using 50% by weight of polyalkylene oxide, more preferably 70% by weight or more, for example, 60 to 60 silicon particles surface-treated with polyalkylene oxide. It can manufacture by mixing 90 weight%, 1-20 weight% of carbon, and 1-20 weight% of polyvinylidene chloride.
- the polymer electrolyte is not limited in theory, but by increasing the capacity of the battery by reducing the diffusion distance of lithium ions due to the repeatable nanostructure by the self-assembly characteristics of the block copolymer.
- the block copolymer is preferably composed of a hydrophobic block and a hydrophilic block has self-assembly.
- the hydrophobic block has a higher Tg than the hydrophilic block, and the hydrophilic block preferably has higher conductivity to lithium ions than the hydrophobic block.
- the hydrophobic block can improve the physical properties of the polymer electrolyte, for example, the mechanical strength, and the hydrophilic block can improve the conductivity for lithium ions.
- the hydrophobic block preferably has a Tg of 30 ° C. or higher, more preferably 40 ° C. or higher, and more preferably 50 ° C. or higher, compared to the hydrophilic block.
- the polymer electrolyte may be made of a block copolymer alone, but it is preferable to use a polymer having a conductivity with respect to lithium ions and a block copolymer. To 90% by weight, preferably 20 to 80% by weight.
- the content or molecular weight of the hydrophobic block and the hydrophilic block can be adjusted according to the degree of self-assembly, preferably adjusted in the range of approximately 20:80 to 80:20 weight ratio.
- the polymer electrolyte may be composed of a polyethylene oxide polymer and a polystyrene-block-polyethylene oxide block copolymer, and the polyethylene oxide polymer and the block copolymer may be mixed and used in the same ratio, and have a molecular weight between polyethylene jade.
- the molecular weight of the block copolymer may be used in the range of polyethylene oxide-block-polystyrene from 10-b-10 kg / mol to 50-b-50 kg / mol.
- a nonionic plasticizer for the polymer electrolyte including the block copolymer so as to further increase the ionic conductivity.
- the nonionic plasticizer lowers the Tg of the hydrophobic block of the block copolymer to increase the ionic conductivity, and may maintain the lamellar structure of the block copolymer even after the charge / discharge cycle proceeds.
- the nonionic plasticizer may be selected from dioctyl phthalate, dibutyl phthalate, diethyl phthalate and dimethyl phthalate, and in the case of a block copolymer containing polystyrene, preferably DMP.
- the polymer electrolyte including the block copolymer may further include an ionic liquid such as [EMlm] [BF4] to further increase the ionic conductivity.
- the negative electrode of the lithium-polymer battery includes a polymer surface-treated negative electrode active particles, characterized in that the thickness is less than 80 microns.
- the thickness of the lithium-polymer battery negative electrode according to the present invention is preferably maintained at 60 microns or less, more preferably 30 microns or less, and more preferably 20 It is better to keep it below micron.
- the lithium-polymer battery when using a polystyrene oxide electrolyte containing a block copolymer, when the thickness of the negative electrode is 60 microns, the charge / discharge capacity is 705 mAh / g and 707 mAh / g to increase the charge / discharge capacity of more than 30% compared to the 100 micron thick cathode, the charge / discharge capacity is 1390 mAh / g and 1403 mAh / g when the cathode thickness is 30 micrometers 60 microns thick
- the charge / discharge capacity is more than twice that of the negative electrode, and the charge / discharge capacity is 1801 mAh / g and 1953 mAh / g when the thickness of the negative electrode is 20 microns.
- the positive electrode comprises a positive electrode active material, a conductive material, a binder
- the conductive material is commonly used as nickel powder, cobalt oxide, titanium oxide, Ketjen black, acetylene black, furnace black, graphite, Carbon fiber, fullerene, and the like
- the positive electrode active material is also known in the art, which is a compound capable of reversible intercalation / deintercalation of lithium, LiMn 2 O 4 , LiCoO 2 , LiNiO 2 , LiFeO 2 , V 2 O 5 , TiS, MoS and the like.
- the lithium secondary battery according to the present invention may have a variety of shapes, such as cylindrical, rectangular, coin-shaped, sheet-like, and is used for transportation devices such as electric vehicles, hybrid vehicles (HEV), fuel cell vehicles (FCEV), battery scooters, etc. It can be applied to large batteries.
- transportation devices such as electric vehicles, hybrid vehicles (HEV), fuel cell vehicles (FCEV), battery scooters, etc. It can be applied to large batteries.
- a novel negative electrode active material capable of withstanding the volume expansion of a negative electrode generated by lithium ions in a repeated charging / discharging process and a lithium-polymer battery using the same are provided.
- the lithium-polymer battery according to the present invention is a high capacity lithium-polymer battery having high stability by using a polymer electrolyte including a block copolymer.
- Figure 1 shows a SAXS and TEM picture of the polymer electrolyte according to the present invention
- Example 1 is labeled "No additive”
- Example 2 is labeled W / DMP
- Example 3 is labeled W / IL . Vertically, scattering data is shown for clarity.
- Arrows ( ⁇ , neat), empty inverted triangles ( ⁇ , DMP), and filled inverted triangles ( ⁇ , ionic liquids) are q *, 2q *, 3q *, 4q *, 6q *; and q *, 2q * , 3q *, 4q *; Bragg peaks are shown at q *, 2q *, 3q *, 4q *, 5q *, 6q *, 7q *;
- TEM images of “no additive”, DMP, and ionic liquids added to PS-PEO / PEO show essentially similar lamellar structures. The salted domains of the PEO layer were stained black with RuO 4 and the unit bar was 100 nm.
- FIG. 3 is a curve of a galvanostatic charge / discharge test at a rate of 0.2 A / g and 0 to 4.5 V in a coin-type half cell as a battery according to the present invention.
- PS-PEO / PEO electrolyte no additive
- PS-PEO / PEO electrolyte with ionic liquid added ionic liquid added
- PS-PEO / PEO electrolyte with DMP PS-PEO / PEO electrolyte with DMP.
- the charge / discharge capacity and Coulomb efficiency vs cycle count are shown inside the right side of each voltage file.
- FIG. 4 is a graph of charging / discharging experiments of a coin-type half-cell consisting of a DMP-added PS-PEO / PEO solid electrolyte and a PEO-SiNPs negative electrode at a rate of 0.2 A / g and a thickness of 0 to 4.5 V.
- FIG. 4 is a graph of charging / discharging experiments of a coin-type half-cell consisting of a DMP-added PS-PEO / PEO solid electrolyte and a PEO-SiNPs negative electrode at a rate of 0.2 A / g and a thickness of 0 to 4.5 V.
- FIG. 5 is a schematic diagram illustrating the synthesis of silicon particles used in the negative electrode of a battery according to the present invention.
- FIG. 6 is a view showing the structure of a lithium-polymer battery according to the present invention.
- (a) Coin type half cell composed of lithium metal, polymer electrolyte, and anode material composed of PEO-SiNPs.
- (b) TEM photographs of the polymer additive (no additive case) show lamellar structures. The salt added PEO layer is stained with RuO 4 and looks black.
- (d) The XRD pattern of the cathode before the cycle shows that the silicon is amorphous.
- FIG. 7 is a FIB-TEM photograph taken in a state where the silicon and lithium ions of the negative electrode are combined.
- the polymer electrolyte was prepared by mixing PS-PEO and PEO in a 1: 1 weight ratio.
- 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIm] [BF4], ⁇ 98% HPLC grade, Sigma Aldrich) or dimethylphthalate (DMP, ⁇ 99%, Sigma Aldrich) was added to the polymer and glass vials, and about 10% by weight of 50/50% by volume solvent of methanol and tetrahydrofuran was added.
- Inhibitor-free anhydrous tetrahydrofuran (THF, ⁇ 99.9%, Sigma Aldrich) was used without further purification and methanol was degassed three times before use. The mixture was stirred overnight at room temperature, and dried samples were placed between plates having a thickness of 300 ⁇ m and prepared using a mechanical press at 80 ° C. and 2000 psi. All preparation was done in a glove box with oxygen and moisture below 0.1 ppm. The structure of the polymer electrolyte was examined using low angle X-ray scattering (SAXS) and TEM, which is shown in FIG. 1. In addition, the ionic conductivity of the polymer electrolyte was measured in an inert environment, which is shown in FIG. 2.
- SAXS low angle X-ray scattering
- TEM TEM
- the composition of the negative electrode material for the cell experiment was composed of PEO-SiNPs, super P carbon black, and polyvinylidene fluoride (PVDF, Solef) with an 8: 1: 1 weight mass of N-methyl-2-pyrrolidone (NMP, Aldrich).
- Coin-type half cells consist of a negative electrode material, a polymer electrolyte, and a lithium foil. No separator was used.
- the amount of the active material loaded was 2 mg / cm 2 , and the cycle experiment was performed at the same charge / discharge rate at 0.2 A / g. Capacity values measured up to 10 cycles are shown in FIG. 3.
- Example 2 The same process as in Example 1 was performed except that 30 parts by weight of DMP was added as a nonionic plasticizer to 100 parts by weight of the polymer electrolyte membrane.
- the thickness of the cathode was changed to 60 microns, and the same procedure as in Example 2 was performed.
- the capacity value is shown in FIG. 4.
- the thickness of the negative electrode was changed to 30 microns in the same manner as in Example 2.
- the capacity value is shown in FIG. 4.
- the thickness of the negative electrode was changed to 20 microns, and the same procedure as in Example 2 was performed.
- the capacity value is shown in FIG. 4.
- Example 2 The same procedure as in Example 1 was conducted except that 50 micron untreated silicon particles were used.
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Abstract
Description
Claims (24)
- 표면에 고분자가 형성된 음극 활입자를 포함하는 음극; 양극; 및 블록공중합체를 포함하는 고분자 전해질;을 포함하는 리튬-폴리머 전지.
- 제1항에 있어서, 음극 활입자는 실리콘 나노입자인 리튬-폴리머 전지.
- 제1항에 있어서, 상기 음극 활입자의 표면에 형성된 고분자는 폴리알킬렌옥사이드를 포함하는 리튬-폴리머 전지.
- 제3항에 있어서, 상기 폴리알킬렌옥사이드는 폴리에틸렌옥사이드인 리튬-폴리머 전지.
- 제1항에 있어서, 상기 블록공중합체는 자기조립성 블록공중합체인 리튬-폴리머 전지.
- 제1항에 있어서, 상기 고분자 전해질은 라멜라 구조인 리튬-폴리머 전지.
- 표면에 고분자가 형성된 음극 활입자를 포함하는 음극; 양극; 및 고분자 전해질;을 포함하여 이루어진 리튬-폴리머 전지.
- 제7항에 있어서, 상기 음극 활입자는 폴리에틸렌옥사이드가 결합된 실리콘 나노입자이고, 상기 폴리에틸렌옥사이드의 중량평균분자량은 200∼20,000인 리튬-폴리머 전지.
- 제8항에 있어서, 상기 폴리알킬렌옥사이드 대 상기 실리콘 나노입자의 중량 비가 1:10∼10:1인 리튬-폴리머 전지.
- 제8항에 있어서, 상기 실리콘 나노입자는 1∼100 nm의 크기인 리튬-폴리머 전지.
- 제7항에 있어서, 상기 음극은 상기 폴리알킬렌옥사이드가 결합된 실리콘 나노입자가 50 중량% 이상인 리튬-폴리머 전지.
- 제8항에 있어서, 상기 실리콘 나노입자는 비결정성인 리튬-폴리머 전지.
- 음극; 양극; 및 고분자 전해질;을 포함하여 이루어지고, 상기 고분자 전해질은 자기조립성 블록공중합체를 포함하는 이차 전지.
- 제13항에 있어서, 상기 자기조립성 블록공중합체는 소수성 블록과 친수성 블록을 포함하는 이차 전지.
- 제14항에 있어서, 상기 소수성 블록은 폴리스티렌인 이차 전지.
- 제14항에 있어서, 상기 친수성 블록은 폴리에틸렌옥사이드 블록인 이차 전지.
- 제14항에 있어서, 상기 소수성 블록의 유리전이온도가 친수성 블록의 유리전이온도보다 20 ℃ 이상 높은 이차 전지.
- 제14항에 있어서, 상기 고분자 전해질의 고분자는 폴리스티렌-블록-폴리에틸렌옥사이드 공중합체와 폴리에틸렌옥사이드로 이루어진 이차 전지.
- 제14항에 있어서, 상기 고분자 전해질은 비이온성 가소제를 더 포함하는 이차 전지.
- 제14항에 있어서, 상기 비이온성 가소제는 DMP인 이차 전지.
- 제14항에 있어서, 상기 고분자 전해질은 비휘발성 이온성 액체를 더 포함하는 이차 전지.
- 고분자가 결합된 실리콘 나노입자를 포함하는 음극; 양극; 및 고분자 전해질;을 포함하여 이루어지고, 상기 음극의 두께는 60 마이크로미터 이하인 이차 전지.
- 소수성 블록과 친수성 블록을 포함하는 자기조립성 블록공중합체; 및
비이온성 가소제, 비휘발성 이온성 액체, 또는 이들의 조합;
을 포함하는 이차 전지용 고분자 전해질. - 폴리에틸렌옥사이드가 표면에 결합된 실리콘 나노입자를 음극 활물질로 포함하는 이차 전지용 음극.
Priority Applications (3)
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---|---|---|---|
EP11862514.4A EP2693555A4 (en) | 2011-03-28 | 2011-11-30 | HIGHLY PERFECTED LITHIUM-POLYMER BATTERY CONTAINING SUBSTITUTED SILICON NANOPARTICLES WITH SELF-ASSEMBLY BLOCK COPOLYMERS AND COPOLYMERS |
US14/006,464 US20140011094A1 (en) | 2011-03-28 | 2011-11-30 | Highly advanced lithium-polymer battery including silicon nanoparticles substituted with polymers and self-assembling block copolymers |
JP2014502436A JP6159709B2 (ja) | 2011-03-28 | 2011-11-30 | 高分子で置換されたシリコンナノ粒子と自己組織化ブロック共重合体を含む高性能リチウム−ポリマー電池 |
Applications Claiming Priority (2)
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KR10-2011-0027733 | 2011-03-28 | ||
KR1020110027733A KR101367217B1 (ko) | 2011-03-28 | 2011-03-28 | 고분자로 치환된 실리콘 나노 입자와 자기 조립성 블록 공중합체를 포함하는 고성능 리튬-폴리머 전지 |
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WO2012134029A1 true WO2012134029A1 (ko) | 2012-10-04 |
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PCT/KR2011/009188 WO2012134029A1 (ko) | 2011-03-28 | 2011-11-30 | 고분자로 치환된 실리콘 나노입자와 자기조립성 블록공중합체를 포함하는 고성능 리튬-폴리머 전지 |
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US (1) | US20140011094A1 (ko) |
EP (1) | EP2693555A4 (ko) |
JP (1) | JP6159709B2 (ko) |
KR (1) | KR101367217B1 (ko) |
WO (1) | WO2012134029A1 (ko) |
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KR101792832B1 (ko) * | 2014-10-29 | 2017-11-20 | 충남대학교산학협력단 | 기-액 계면 플라즈마 중합에 의한 고분자 박막의 제조방법 및 이에 의해 제조된 고분자 박막 |
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KR101672100B1 (ko) * | 2014-12-12 | 2016-11-04 | 포항공과대학교 산학협력단 | 음이온 안정화 고분자를 포함하는 고분자 전해질 및 그 제조 방법 |
KR101750935B1 (ko) * | 2014-12-12 | 2017-06-27 | 주식회사 엘지화학 | 블록 공중합체, 및 이를 이용한 그래핀의 제조 방법 |
CN106058165B (zh) | 2015-04-02 | 2021-11-09 | 松下知识产权经营株式会社 | 电池和电池用电极材料 |
KR102466670B1 (ko) * | 2015-05-29 | 2022-11-14 | 삼성전자주식회사 | 리튬 전지용 전해질, 및 이를 포함하는 음극 및 리튬 전지 |
JP2019503032A (ja) | 2015-11-17 | 2019-01-31 | ネグゼオン・リミテッドNexeon Ltd | 官能化された電気化学的活性材料および官能化の方法 |
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CN110073528A (zh) * | 2016-12-15 | 2019-07-30 | 昭和电工株式会社 | 粒状复合材料、锂离子二次电池用负极及其制造方法 |
KR20200044805A (ko) | 2017-08-31 | 2020-04-29 | 니폰 제온 가부시키가이샤 | 전기 화학 소자 기능층용 조성물, 전기 화학 소자용 기능층, 및 전기 화학 소자 |
TWI805123B (zh) * | 2021-12-10 | 2023-06-11 | 芯量科技股份有限公司 | 矽碳複合負極材料及其製備方法與應用 |
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Also Published As
Publication number | Publication date |
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US20140011094A1 (en) | 2014-01-09 |
JP6159709B2 (ja) | 2017-07-05 |
EP2693555A1 (en) | 2014-02-05 |
EP2693555A4 (en) | 2014-10-01 |
KR101367217B1 (ko) | 2014-03-12 |
KR20120109905A (ko) | 2012-10-09 |
JP2014514698A (ja) | 2014-06-19 |
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