摘要:
An electrode active material forming composition, a separator forming composition and a manufacturing method of a lithium secondary battery using the compositions are provided. The method for manufacturing a lithium secondary battery including the steps of (a) coating electrode active material compositions each comprising a electrode active material, a binder and a solvent on an electrode current collector to form a cathode and an anode, (b) forming a separator on both surfaces of the anode using a composition for forming a separator comprising a polymer resin, a plasticizer, a filler and a solvent; (c) disposing and fixedly adhering the cathode on the separator to form a battery structure, (d) drying the battery structure under a vacuum condition, and (e) impregnating an electrolytic solution into the resultant structure, wherein the plasticizer of the composition for forming the separator is at least one material selected from the group consisting of an ethylene glycol derivative, a cyclic carbonate, a non-cyclic carbonate and propylene glycol carbonate. Therefore, since a plasticizer can be removed under a vacuum condition, the time required for manufacturing a battery can be reduced and the manufacturing process becomes simplified, thereby improving the productivity. Also, since an organic solvent extraction process using an organic solvent is not necessary, unlike in the conventional art, the cost required for a recovery facility of an organic solvent can be reduced. Further, uniform pores are formed in electrodes and a separator, the porosity characteristics are excellent, and adhesion between the separator and the electrodes is excellent, thereby exhibiting excellent high-rate, lifetime, and low-temperature characteristics.
摘要:
An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.
摘要:
An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.
摘要:
A composition for forming polymer electrolyte and a lithium secondary battery employing the polymer electrolyte prepared using the composition are provided. The composition for forming polymer solid electrolyte having a polymer resin, a plasticizer, a filler and a solvent, wherein the filler is synthetic zeolite having an affinity for an organic solvent or moisture. Therefore, the mechanical strength and ionic conductivity can be improved by adding synthetic zeolite as a filler when forming polymer electrolyte. Also, use of such polymer electrolyte makes it possible to prepare lithium secondary batteries having good high-current discharge characteristics and excellent discharge capacity characteristics even under repeated charge/discharge conditions.
摘要:
Organic lithium salts suitable for use in electrolytes for primary or secondary rechargeable batteries include de-localized bulky anions over Lewis acid fragments, typically BF3, and organic moieties. The organic moieties may be, for example, anions derived from fused nitrogen heterocycles (e.g. benzeneimidate, benzitriazolate and the like); multi carboxylates (e.g. oxalate, 1,2,4,5-benzenetetracarboxylate and the like), and pyromellitic diimidate. The organic lithium salts of the invention have the general formula: Liq[Org(MXn)m], in which Org represents the organic moieties and MXn represents an organic or inorganic boron, aluminum or phosphorous containing Lewis acid. The organic lithium salts are conveniently prepared by reacting an organic compound having at least one de-protonation group selected from NH, OH, SH or COOH with an inorganic or organic lithium compound to generate an organic lithium processor salt, and thereafter bringing the organic lithium processor salt into contact with an inorganic or organic Lewis acid to obtain the organic lithium product salt.
摘要:
Ionic gel polymer electrolytes for rechargeable polymer batteries preferably are formed by dissolving a gelling agent into organic liquid electrolytes, and then gelling the precursor in situ at elevated temperature after pouring it into a battery case that contains a cathode, an anode and a separator. The gel polymer electrolytes exhibit excellent ionic conductivity of up to about 10−2 S/cm and voltage stability for lithium rechargeable batteries. Most preferably, the gel polymer electrolyte is the reaction product of (A) a heterocyclic amine-group containing material (preferably a vinvlpyridine), and (B) halide or epoxy-group containing polymers, copolymers, oligomers or monomers that are capable of reacting with nitrogen-containing compounds, such as polymers, copolymers, oligomers or monomers containing alkylene halides or halomethyl group substituted aromatic units or at least one epoxy unit.
摘要翻译:用于可再充电聚合物电池的离子凝胶聚合物电解质优选通过将胶凝剂溶解到有机液体电解质中,然后在将其倾入包含阴极,阳极和隔膜的电池壳中之后将其高温地将其高温胶凝而形成。 凝胶聚合物电解质表现出高达约10 -2 S / cm的离子电导率和锂可充电电池的电压稳定性。 最优选地,凝胶聚合物电解质是(A)含杂环胺基材料(优选乙烯吡啶)的反应产物和(B)能够反应的卤化物或含环氧基的聚合物,共聚物,低聚物或单体的反应产物 与含氮化合物,例如聚合物,共聚物,低聚物或含有亚烷基卤化物或卤代甲基取代的芳族单元或至少一个环氧单元的单体。
摘要:
Lithium-ion electrochemical cells include an anode, a cathode and a separator between the anode and cathode, wherein at least one of the anode, cathode and separator includes a polysiloxane coating thereon. Most preferably, the polysiloxane coating is the polymerized reaction product of dimethyl siloxane and tetra(trimethylsiloxy) silane), and is present on the surface in an amount between about 0.05 to about 0.17 mg/cm2. After being coated with the polysiloxane adhesive, the electrodes and separator can easily be attached one to another at ambient temperature by application of pressure using a hand roller or with a laminator, and then subsequently formed into a spiral or stacked structure for placement in a battery cell case.
摘要翻译:锂离子电化学电池包括阳极,阴极和在阳极和阴极之间的隔板,其中阳极,阴极和隔板中的至少一个在其上包括聚硅氧烷涂层。 最优选地,聚硅氧烷涂层是二甲基硅氧烷和四(三甲基甲硅烷氧基)硅烷)的聚合反应产物,并且在表面上以约0.05至约0.17mg / cm 2的量存在。 在涂覆聚硅氧烷粘合剂之后,通过使用手动辊或层压机施加压力,电极和隔膜可以容易地在环境温度下彼此连接,然后形成螺旋或堆叠结构以放置在电池中 电池盒。
摘要:
An electrolyte composition, a lithium battery using the electrolyte composition, and a method of manufacturing the lithium battery are provided. The electrolyte composition contains: a lithium salt; an organic solvent containing 15-50% by weight of propylene carbonate based on the total weight of the electrolyte composition; a nitrogen-containing compound; and cyclohexylbenzene. The lithium battery manufactured using the electrolyte composition has improved stability even when overcharged and improved cycle characteristics.
摘要:
Organic lithium salts suitable for use in electrolytes for primary or secondary rechargeable batteries include de-localized bulky anions over Lewis acid fragments, typically BF3, and organic moieties. The organic moieties may be, for example, anions derived from fused nitrogen heterocycles (e.g. benzeneimidate, benzitriazolate and the like); multi carboxylates (e.g. oxalate, 1,2,4,5-benzenetetracarboxylate and the like), and pyromellitic diimidate. The organic lithium salts of the invention have the general formula: Liq[Org(MXn)m], in which Org represents the organic moieties and MXn represents an organic or inorganic boron, aluminum or phosphorous containing Lewis acid. The organic lithium salts are conveniently prepared by reacting an organic compound having at least one de-protonation group selected from NH, OH, SH or COOH with an inorganic or organic lithium compound to generate an organic lithium processor salt, and thereafter bringing the organic lithium processor salt into contact with an inorganic or organic Lewis acid to obtain the organic lithium product salt.
摘要:
An electrolyte composition, a lithium battery using the electrolyte composition, and a method of manufacturing the lithium battery are provided. The electrolyte composition contains: a lithium salt; an organic solvent containing 15-50% by weight of propylene carbonate based on the total weight of the electrolyte composition; a nitrogen-containing compound; and cyclohexylbenzene. The lithium battery manufactured using the electrolyte composition has improved stability even when overcharged and improved cycle characteristics.