摘要:
A non-aqueous electrolyte secondary battery which comprises a positive electrode containing a lithium-containing oxide; a negative electrode containing a material capable of absorbing and releasing lithium; and a non-aqueous electrolyte containing a non-aqueous solvent containing at least one non-cyclic ester and which is excellent in storage stability at high temperatures is provided by adding an oxidation resistance improving agent such as triphenylmethane, tetraphehylmethane or the like.
摘要:
A battery excellent in high temperature storage characteristic is presented. It comprises a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode material, a nonaqueous solvent, and an electrolytic solution containing at least one of organic compounds expressed in formula 1 and formula 2. The positive electrode active material has an oxide compound containing a lithium atom, and the negative electrode material has a material capable of storing and releasing a lithium ion. Formula 1 where R1, R2, R3, R4 are individually at least one selected from the group consisting of H, aryl group, and aryl group having a functional group containing a substituent having an electron attracting property, and the number of H is three or less. Formula 2
摘要:
A battery excellent in high temperature storage characteristic is presented. It comprises a positive electrode having a positive electrode active material containing an transition metal complex oxide containing lithium , a negative electrode containing a negative electrode material capable of storing and releasing a lithium ion, and an electrolytic solution containing a nonaqueous solvent, an electrolyte, and an organic compound expressed in formula 1. ##STR1## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 have individually at least one of H and a group containing a vinyl group, and the number of H substituent is four or less.
摘要:
Lithium batteries having excellent high rate characteristics and low-temperature characteristics, and less in evolution of gases and superior in discharge characteristics are provided by using LiCoO2 mixed with CaO or Cr2O3 or the like as an active material of positive electrode in combination with a non-aqueous electrolyte containing a mixed electrolyte salt comprising both a fluorine-containing inorganic anion lithium salt and a lithium imide salt.
摘要翻译:通过使用与CaO或Cr 2 O 3等混合的LiCoO 2作为正极活性物质与非电解质的组合,提供具有优异的高速率特性和低温特性以及气体逸出和放电特性优异的锂电池, 含有包含含氟无机阴离子锂盐和酰亚胺盐两者的混合电解质盐的含水电解质。
摘要:
A polymeric solid electrolyte capable of conducting lithium ions which contains silylamide bonds in its polymer skeleton structure, for example, which is obtained by a method comprising subjecting a mixture of lithium silylamide and an organic compound having at least one carbon—carbon double bond to a polymerization in a dry atmosphere; and a lithium secondary cell using the polymeric solid electrolyte. The polymeric solid electrolyte is a “dry” polymeric solid electrolyte which contains counter ions forming lithium salts with lithium ions in its polymer skeleton structure and thus has a single ion electron conducting system wherein lithium ions alone are mobile ions, and hence has excellent conductivity, and further is easy to produce. The polymeric solid electrolyte can therefore be used for producing a novel lithium secondary cell which is an alternative for conventional lithium cells using an organic solvent and is safe and excellent in the capability of corresponding to a variety of shapes and has a high cell voltage.
摘要:
In a non-aqueous electrolyte secondary battery, a cyclic carboxylic acid ester having a high conductivity in a low-temperature environment is used as an electrolyte, and, furthermore, a cyclic carbonic acid ester having at least one carbon-carbon unsaturated bond is added thereto for the inhibition of reductive decomposition of the cyclic carboxylic acid ester.
摘要:
A lithium secondary cell comprising a safe aqueous-solution electrolyte free from danger of firing and explosion and capable of supplying a high voltage of more than 3 V. The cell includes a positive plate having an active material absorbing/desorbing lithium ions and exhibiting a high voltage, a negative plate having an active material exhibiting a low voltage, a polymer solid electrolyte having a lithium-ionic conductivity, and an aqueous-solution electrolyte. The positive and negative plates are coated with a polymer solid electrolyte having an ionic conductivity and therefore isolated from the aqueous-solution electrolyte by the plate coating layers.
摘要:
The present invention relates to an electrolyte for non-aqueous electrochemical device containing at least one of 6-substituted-1,3,5-triazine-2,4-dithiol and derivatives thereof as an additive and a non-aqueous electrochemical device, particularly a lithium secondary battery by the use thereof. The additive of the present invention forms a stable and low resistance film on the positive electrode, inhibiting characteristics of the electrochemical device from deteriorating on account of gas generated due to the decomposition of electrolyte.
摘要:
A negative electrode of a non-aqueous electrolyte secondary battery contains, as main a component, composite particles constructed in such a manner that at least part of the surface of nuclear particles comprising at least one of tin, silicon and zinc as a constituent element, is coated with a solid solution or an inter-metallic compound composed of elements included in the nuclear particle and at least one element, exclusive of the element included in said nuclear particle, selected from a group of elements in a Periodic Table, comprising group 2 elements, transition elements, group 12 elements, group 13 elements and group 14 elements exclusive of carbon. The batteries of the present invention include non-aqueous electrolytic solution and solid electrolytes comprising polymer gel electrolytes. The construction of the present invention provides a non-aqueous electrolytic secondary battery with which a possibility of the generation of gas is extremely low when stored at high temperatures. It also provides a battery having higher capacity, and superior cycle properties, high-rate charge/discharge properties.
摘要:
The present invention relates to a non-aqueous electrolyte secondary battery. The negative electrode of the present invention is characterized by its composite particles constructed in such a manner that at least part of the surrounding surface of nuclear particles containing at least one of tin, silicon and zinc as a constituent element, is coated with a solid solution or an intermetallic compound, which are composed of the element contained in the nuclear particles, and at least one other element except the elements contained in the nuclear particles selected from a group comprising group 2 elements, transition elements, group 12 elements, group 13 elements and group 14 elements except carbon of the Periodic Table. The electrolyte uses anion lithium salts of organic acid dissolved in organic solvent with high oxidation resistant characteristics. By adopting the above construction, a battery which generates only a small amount of gas during a high temperature storing can be obtained. Furthermore, the batteries enjoy high energy density and a lower reduction rate of discharge capacity when used repeatedly as well as high charge/discharge properties.