Abstract:
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.
Abstract:
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.
Abstract translation: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。
Abstract:
There are provided an anode for a lithium metal polymer secondary battery comprising an anodic current collector having a surface on which a plurality of recesses having a predetermined shape are formed and a method of preparing the same. The plurality of recesses are formed on a surface of the anodic current collector using a physical method or a chemical method. In a lithium metal polymer secondary battery employing the anode, oxidation/reduction of lithium and the formation of dendrite occur only in the recesses formed by surface patterning of the anodic current collector. Thus, expanding and shrinking of a battery due to a change in the thickness of the lithium anode can be prevented and cycling stability and the lifespan of a battery can be improved.
Abstract:
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.
Abstract:
Provided are a multi-layered polymer package for a film battery and a combined package and current collector. The polymer package for the film battery and the combined package and current collector include a multi-layered polymer film having a construction of at least three layers, which includes a first polymer film, a second polymer film, and a third polymer film, the first, second, and third polymer films being made of different materials. The first polymer film is made of a hydrocarbon compound which is unsubstituted or substituted by a fluorine (F) atom. The second polymer film is made of an amorphous polymer. The third polymer film is made of a polymer having a tensile strength of a predetermined value or more and a tensile modulus of a predetermined value or more. In the combined package and current collector, a conductive layer is disposed on a surface of the multi-layered polymer film.