摘要:
In a non-aqueous electrolyte secondary battery provided with a positive electrode 1, a negative electrode 2, and a non-aqueous electrolyte solution, a lithium-containing composite nickel oxide is used as a chief component of the positive electrode material for the positive electrode, a lithium-containing titanium oxide is used as a chief component of the negative electrode material for the negative electrode, and the solvent of the non-aqueous electrolyte solution contains a cyclic carbonic ester and a chain carbonic ester in such a manner that the cyclic carbonic ester and chain carbonic ester are contained in amounts of not less than 10% by volume of the whole solvent, respectively, and the total content of the cyclic carbonic ester and the chain carbonic ester is not less than 60% by volume of the whole solvent.
摘要:
In a non-aqueous electrolyte battery using titanium oxide or lithium titanate as a negative electrode material for negative electrode, polymeric electrolyte is interposed between the negative electrode and a positive electrode. If titanium oxide or lithium titanate is used as the negative electrode material for negative electrode and the polymeric electrolyte is interposed between the negative electrode and the positive electrode, the polymeric electrolyte is less liable to be decomposed by catalytic reduction induced by titanium oxide or lithium titanate. This prevents decline in the charge/discharge efficiency which occurs when a non-aqueous electrolyte solution is used. Thus, the non-aqueous electrolyte battery excellent in charge/discharge efficiency is provided.
摘要:
A nonaqueous electrolyte battery having improved storage stability is disclosed. The battery includes a positive electrode; s negative electrode in which the active material is lithium or a compound capable of absorbing and desorbing lithium; and a nonaqueous electrolyte containing an organic solvent, at least 10 wt % of which is dioxolane, a solute and a storage stabilizing additive which is an oxygen acid ester, isoxazole, oxazole or oxazoline or a derivative thereof. The additive reduces the self-discharge rate of the battery during storage.
摘要:
A non-aqueous electrolyte battery includes a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the non-aqueous electrolyte contains boric acid ester as a solvent.
摘要:
The opening to be sealed in a battery is sealed with an electrical insulating sealant S by placing an electrical insulating sealing material C, including a first sealing material A that is soften by heat applied for sealing and a second sealing material B that is more difficult to soften by the heat applied for sealing than the first sealing material A, and by heating and successively cooling the electrical insulating sealing material C. The second sealing material B is in the form of a mesh. Thus, a sealed battery with few defectives such as a sealing failure and a short-circuit can be manufactured in a high yield rate.
摘要:
The present invention provides a lithium secondary battery using, as a lithium ion occluding agent for a negative electrode, a substantially amorphous oxide powder in which a product V·d of a total volume V in cm3/g of pores with a diameter of 100 nm or less and a true density d in g/cm3 measured by a helium displacement method is 0.1 through 0.5. Thus, the lithium secondary battery can attain an excellent charge-discharge cycle characteristic.
摘要翻译:本发明提供一种锂二次电池,其使用作为负极的锂离子吸留剂的基本上无定形的氧化物粉末,其中总体积V的产物Vd为cm3 / g,直径为100nm以下的孔 并且通过氦置换法测量的以g / cm 3表示的真密度d为0.1至0.5。 因此,锂二次电池可以获得良好的充放电循环特性。
摘要:
The opening to be sealed in a battery is sealed with an electrical insulating sealant S by placing an electrical insulating sealing material C, including a first sealing material A that is soften by heat applied for sealing and a second sealing material B that is more difficult to soften by the heat applied for sealing than the first sealing material A, and by heating and successively cooling the electrical insulating sealing material C. Thus, a sealed battery with few defectives such as a sealing failure and a short-circuit can be manufactured in a high yield rate.
摘要:
A nonaqueous electrolyte secondary cell having a rolled-up electrode unit housed in a cell can and comprising a positive electrode and a negative electrode each formed by coating a surface of a striplike current collector with an electrode material. According to a first embodiment, the current collector of at least one of the positive electrode and the negative electrode comprises a plurality of current collector pieces 42 arranged along one direction and a PTC element 5 interconnecting each pair of adjacent current collector pieces 42. Alternatively with a second embodiment, at least one of the positive electrode and the negative electrode comprises a PTC element held between opposed faces of an uncoated portion of the current collector thereof and a base end portion of a current collector tab. The PTC element serves to prevent continuous occurrence of a current in excess of a predetermined value and realizes a high energy density.
摘要:
A nonaqueous electrolyte lithium primary or secondary battery having improved storage property is disclosed. The battery includes a positive electrode; a negative electrode in which the active material is lithium, a lithium alloy or a compound capable of occluding and discharging lithium; and a nonaqueous electrolyte including a solvent containing at least 10 wt % of dioxolane or derivative of dioxolane and an electrolytic solute represented by LiN(CmF2m+1SO2)(CnF2n+1SO2) (where m is a natural number of 1 or greater, and n is a natural number of 2 or greater).
摘要:
A lithium secondary battery includes a positive electrode having a complex oxide of lithium and titanium as an active material, the composition of which before initial discharge is represented by Li.sub.x Ti.sub.3-x O.sub.4 (1.ltoreq.x.ltoreq.1.5), a negative electrode having an intercalation compound as an active material, the composition of which before initial discharge is represented by C.sub.y Li (6.ltoreq.y.ltoreq.6.5), and a nonaqueous electrolyte. A low voltage lithium secondary battery having about 1.5 V of discharge voltage is provided.