摘要:
Provided are a composite polymer electrolyte for a lithium secondary battery in which a composite polymer matrix multi-layer structure composed of a plurality of polymer matrices with different pore sizes is impregnated with an electrolyte solution, and a method of manufacturing the same. Among the polymer matrices, a microporous polymer matrix with a smaller pore size contains a lithium cationic single-ion conducting inorganic filler, thereby enhancing ionic conductivity, the distribution uniformity of the impregnated electrolyte solution, and maintenance characteristics. The microporous polymer matrix containing the lithium cationic single-ion conducting inorganic filler is coated on a surface of a porous polymer matrix to form the composite polymer matrix multi-layer structure, which is then impregnated with the electrolyte solution, to manufacture the composite polymer electrolyte. The composite polymer electrolyte is used in a unit battery. The composite polymer matrix structure can increase mechanical properties. The introduction of the lithium cationic single-ion conducting inorganic filler can provide excellent ionic conductivity and high rate discharge characteristics.
摘要:
Provided are a composite polymer electrolyte for a lithium secondary battery in which a composite polymer matrix multi-layer structure composed of a plurality of polymer matrices with different pore sizes is impregnated with an electrolyte solution, and a method of manufacturing the same. Among the polymer matrices, a microporous polymer matrix with a smaller pore size contains a lithium cationic single-ion conducting inorganic filler, thereby enhancing ionic conductivity, the distribution uniformity of the impregnated electrolyte solution, and maintenance characteristics. The microporous polymer matrix containing the lithium cationic single-ion conducting inorganic filler is coated on a surface of a porous polymer matrix to form the composite polymer matrix multi-layer structure, which is then impregnated with the electrolyte solution, to manufacture the composite polymer electrolyte. The composite polymer electrolyte is used in a unit battery. The composite polymer matrix structure can increase mechanical properties. The introduction of the lithium cationic single-ion conducting inorganic filler can provide excellent ionic conductivity and high rate discharge characteristics.
摘要:
A cathode active material for a lithium secondary cell used in a cellular phone is disclosed. The cathode active material for the lithium secondary cell and the method the same having a high capacity and a long lifetime, different from LiCoO2 and LiMn2O4, Li(Ni, Co)O2, and V-system oxide that has been researched as the active material for substituting LiCoO2 are provided. The cathode active material for the lithium secondary cell in the next formula 1 is obtained by heating or chemically treating diadochite [Fe2(PO4)(SO4)(OH).6H2O] that is the mineral containing PO43−, SO42−, and OH−. LiaFebMc(PO4)x(SO4)y(OH)z (1) In the formula, M is at least one element selected from a radical consisting of Mg, Ti, Cr, Mn, Co, Ni, Cu, Zn, Al, and Si, with 0≦a, c≦0.5, 1≦b≦2, 0.5≦x, y, z≦1.5.
摘要:
Provided is a method of producing a nanoparticle-filled phase inversion polymer electrolyte. The method includes mixing a nanoparticle inorganic filler and a polymer with a solvent to obtain a slurry; casting the obtained slurry to form a membrane; obtaining an inorganic nanoparticle-filled porous polymer membrane by developing internal pores in the cast membrane using a phase inversion method; and impregnating the inorganic nanoparticle-filled porous polymer membrane with an electrolytic solution. The polymer electrolyte produced using the method can be used in a small lithium secondary battery having a high capacity, thereby providing an excellent battery property.
摘要:
Provided are an electrolyte composition of a dye-sensitized solar cell, a manufacturing method thereof, and a dye-sensitized solar cell comprising the composition. The composition comprises a polyvinylidene fluoride (PVDF) based high polymer and titanium dioxide nanoparticles serving as an inorganic material based filler. Using the PVDF based high polymer in the composition can solidify the composition, and this solidification can contribute to the flexibility of a solar cell. Also, the inorganic material based filler, i.e., the titanium dioxide nanoparticles, can reinforce the collection and retention of an aqueous component comprising iodide ions, which are carriers within the electrolyte. Accordingly, compared to typical high polymer based electrolyte solutions, excellent photoelectric conversion efficiency can be achieved with the above electrolyte composition.
摘要:
A method of manufacturing a conducting polymer film including dissolving a lithium salt in an organic solvent; after the lithium salt is completely dissolved in the organic solvent, dissolving a conducting polymer in the organic solvent by adding the conducting polymer little by little in many separate doses into the organic solvent until obtaining a deep blue colored solution; and leaving the deep blue colored solution as it stands over seven days and coating it on a flat surface; and evaporating the solvent from the coated solution. It is possible to work the conducting polymer film in a very thin membrane and to control the thickness as required, since the polymer film can be formed directly from a solution. Furthermore, it is also possible to control the conductivity of the polymer film by varying the type of salts as used and the concentration thereof, and thus its applicability is very diverse as the purpose of using them, for example in electronic/electric components.
摘要:
Provided are a composite polymer electrolyte for a lithium secondary battery that includes a composite polymer matrix structure having a single ion conductor-containing polymer matrix to enhance ionic conductivity and a method of manufacturing the same. The composite polymer electrolyte includes a first polymer matrix made of a first porous polymer with a first pore size; a second polymer matrix made of a single ion conductor, an inorganic material, and a second porous polymer with a second pore size smaller than the first pore size. The second polymer matrix is coated on a surface of the first polymer matrix. The composite polymer matrix structure can increase mechanical properties. The single ion conductor-containing porous polymer matrix of a submicro-scale can enhance ionic conductivity and the charge/discharge cycle stability.
摘要:
Provided is a cathode composition for lithium secondary battery that includes a lithium-chromium-titanium-manganese oxide that has the formula Li[Li(1-x)/3CrxTi(2/3)yMn2(1-x-y)/3]O2 where 0≦x≦0.3, 0≦y≦0.3 and 0.1≦x+y≦0.3, and layered a-LiFeO2 structure. A method of synthesizing the lithium-chromium-titanium manganese oxide includes preparing a first mixed solution by dispersing titanium dioxide (TiO2) in a mixed solution of chrome acetate (Cr3(OH)2(CH3CO2)7) and manganese acetate ((CH3CO2)2Mn.4H2O), adding a lithium hydroxide (LiOH) solution to the first mixed solution to obtain homogeneous precipitates, forming precursor powder that has the formula Li[Li(1-x)/3CrxTi(2/3)yMn2(1-x-y)/3]O2 where 0≦x≦0.3, 0≦y≦0.3 and 0.1≦x+y≦0.3 by heating the homogeneous precipitates, and heating the precursor powder to form oxide powder having a layered structure.
摘要翻译:本发明提供一种锂二次电池用阴极组合物,其特征在于,具有式Li [Li(1-x)/ 3 sub> Ti(2/3)y Mn 2(1-xy)/ 3 O 2其中0 <= x <= 0.3,0 <= y <= 0.3和0.1 <= x + y <= 0.3,层叠a-LiFeO 2结构。 合成锂 - 铬 - 钛锰氧化物的方法包括通过将二氧化钛(TiO 2)在乙酸铬(Cr 3 O 3)的混合溶液中分散来制备第一混合溶液, (OH)2(CH 3 CO 2)7)和乙酸锰((CH 3) 将第一混合溶液中的氢氧化锂(LiOH)溶液加入到第二混合溶液中,向第二混合溶液中加入氢氧化锂(LiOH) 获得均匀的沉淀物,形成具有式Li [Li(1-x)/ 3 Cr x Ti(2/3)y SUB > Mn 2(1-xy)/ 3 O 2其中0 <= x <= 0.3,0 <= y <0.3和0.1 <= x + y 通过加热均匀的沉淀物,加热前体粉末形成具有层状结构的氧化物粉末,使其为<= 0.3。
摘要:
A method of preparing layered lithium-chromium-manganese oxides having the formula Li[CrxLi(1/3−x/3) Mn(2/3−2x/3)]O2 where 0.1≦X≦0.5 for lithium batteries. Homogeneous precipitation is prepared by adding lithium hydroxide (LiOH) solution to a mixed solution of chromium acetate (Cr3(OH)2(CH3CO2)7) and manganese acetate ((CH3CO2)2Mn.4H2O), while precursor powders are prepared by firing the precipitation. After that, the precursor powders are subjected to two heat treatment to yield Li[CrxLi(1/3−x/3) Mn(2/3−2x/3)]O2 with α-LiFeO2 structure.
摘要翻译:一种制备具有式Li [Cr x Li(1/3-x / 3)Mn 3/3的层状锂 - 锰 - 锰氧化物的方法 -2×3)2 O 2其中对于锂电池,0.1 <= X <= 0.5。 通过将氢氧化锂(LiOH)溶液加入到乙酸铬(Cr 3/3(OH)2)(CH 3)3的混合溶液中制备均相沉淀, CO 2 2)7)和乙酸锰((CH 3 3 CO 2)2 SUB > Mn 4 H 2 O),而通过烧制沉淀制备前体粉末。 之后,对前驱体粉末进行两次热处理,得到Li(Cr 1/3)(1/3-x / 3)Mn(2/3) -2x / 3)O 2与α-LiFeO 2结构结合。