摘要:
The present invention provides a high-power secondary battery using a gel electrolyte comprising a polymer matrix, which is obtained by polymerizing a polymerizable functional group-terminated borate represented by formula (1) or a mixture composed of a borate represented by formula (2) and a borate represented by formula (3), an electrolytic salt, and further a nonaqueous solvent: wherein Z1, Z2, and Z3 each independently represent a polymerizable functional group or a hydrocarbon group having 1 to 10 carbon atoms, provided that an average mole of the hydrocarbon group having 1 to 10 carbon atoms is 1.0 to 2.5 per the three groups of Z1, Z2 and Z3; AO represents an oxyalkylene group having 2 to 4 carbon atoms; 1, m, and n are each independently an average number of moles of the oxyalkylene group added of 0 to 100, provided that 1+m+n is 1 to 300; and B represents a boron atom; and wherein Z4, Z5, and Z6 each independently represent a polymerizable functional group; AO represents an oxyalkylene group having 2 to 4 carbon atoms; p, q, r, α, β, and γ are each independently an average number of moles of the oxyalkylene group added of 0 to 100, provided that p+q+r is 1 to 300, and α+β+γ is 1 to 300; X1, X2, and X3 each independently represent a hydrocarbon group having 1 to 10 carbon atoms; and B represents a boron atom.
摘要:
To provide a lithium secondary battery which suppresses a decrease in the charge and discharge efficiency during a battery storage test and which is excellent in maintaining the battery capacity after the storage test. There are disclosed a nonaqueous lithium battery, comprising: a positive electrode active material comprising a lithium-containing oxide capable of inserting and detaching lithium ions; a negative electrode active material comprising a carbon material capable of inserting and detaching lithium ions; and an electrolytic solution containing a lithium ion, wherein the surface of the negative electrode active material after initializing charging is coated with a compound derived from vinylene carbonate, and wherein a weight power density of the lithium battery is no less than 100 Wh/kg, and a method of producing a nonaqueous lithium battery comprising a step of sealing a positive electrode active material, a negative electrode active material, and a nonaqueous electrolytic solution using a sealed container, wherein a predetermined amount of vinylene carbonate is added into the nonaqueous electrolytic solution, and the initializing charging is carried out to form a coating on the surface of the negative electrode active material, the coating being derived from the vinylene carbonate.
摘要:
To provide a lithium secondary battery excellent in the life characteristic and the power density. A lithium secondary battery, comprising: a positive electrode capable of intercalating and deintercalating lithium; and an negative electrode capable of intercalating and deintercalating lithium, wherein the positive electrode contains a manganese-containing positive electrode active material of a spinel structure and an oxide that coats the surface of this positive electrode active material, wherein the oxide contains a metallic element, wherein the metallic element forms a solid solution with the positive electrode active material, and wherein the atomic concentration of the metallic element is approximately 0 at depths of from 50 to 100 nm from an external surface of the negative electrode.
摘要:
An object of the invention is to reduce the charging overvoltage by using a positive electrode member which does not contain a carbon material that causes the generation of lithium carbonate (Li2CO3), and which comprises a metal porous material, thereby suppressing the formation of lithium carbonate (Li2CO3). The metal air secondary battery of the invention is characterized by having a negative electrode member which has metal ions occluded therein and emits metal ions, a positive electrode member which ionizes oxygen, and a separator which is impregnated with an electrolyte and disposed between the negative electrode member and the positive electrode member, wherein the carbon weight in the total weight of a carrier, a catalyst, and a binder constituting the positive electrode member is 50% or less.
摘要翻译:本发明的目的是通过使用不含碳酸锂(Li 2 CO 3)的碳材料的正极构件来减少充电过电压,并且包括金属多孔材料,从而抑制碳酸锂的形成 (Li 2 CO 3)。 本发明的金属空气二次电池的特征在于,具有在其内吸附有金属离子而发出金属离子的负极部件,将氧离子化的正极部件和浸渍有电解质的隔膜配置在负极 构件和正极构件,其中构成正极构件的载体,催化剂和粘合剂的总重量中的碳重量为50%以下。
摘要:
An object of the invention is to reduce the charging overvoltage by using a positive electrode member which does not contain a carbon material that causes the generation of lithium carbonate (Li2CO3), and which comprises a metal porous material, thereby suppressing the formation of lithium carbonate (Li2CO3). The metal air secondary battery of the invention is characterized by having a negative electrode member which has metal ions occluded therein and emits metal ions, a positive electrode member which ionizes oxygen, and a separator which is impregnated with an electrolyte and disposed between the negative electrode member and the positive electrode member, wherein the carbon weight in the total weight of a carrier, a catalyst, and a binder constituting the positive electrode member is at least 50% or less.
摘要翻译:本发明的目的是通过使用不含碳酸锂(Li 2 CO 3)的碳材料的正极构件来减少充电过电压,并且包括金属多孔材料,从而抑制碳酸锂的形成 (Li 2 CO 3)。 本发明的金属空气二次电池的特征在于,具有在其内吸附有金属离子而发出金属离子的负极部件,将氧离子化的正极部件和浸渍有电解质的隔膜配置在负极 构件和正极构件,其中构成正极构件的载体,催化剂和粘合剂的总重量中的碳重量为至少50%以下。
摘要:
A nonaqueous electrolyte and a lithium-ion secondary battery using the same, wherein a mixture of a cyclic carbonate, a chain carbonate, a first phosphoric acid ester wherein bonding between carbons is a single bond, and a second phosphoric acid ester wherein bonding between carbons contains a double bond is used as the nonaqueous electrolyte. It is desirable that the first phosphoric acid ester is a trimethyl phosphate. In addition, it is desirable that the second phosphoric acid ester is a dimethylisopropenyl phosphate.
摘要:
The present invention provides a battery that experiences a small degree of temporal change from the initial battery properties over the long term storage period of the battery. Specifically, the present invention provides a lithium secondary battery, in which a positive electrode capable of storing and releasing lithium and a negative electrode capable of storing and releasing lithium are formed via an electrolyte, wherein: the electrolyte comprises a cyclic solvent and a chain-type solvent and contains a compound having a boron-oxygen bond (B—O) and a carbon-carbon double bond (C═C).
摘要:
Disclosed is a negative electrode active material for lithium-ion secondary batteries which contributes to high capacity, high energy density, and safety and a lithium-ion secondary battery provided with the negative electrode active material. The negative electrode active material is an oxide containing Li and Fe and having crystalline and amorphous phases of LiFeO2 such that there is a specific ratio ranging from 13.2 to 100 between peak value of X-ray diffraction due to the plane of the crystalline phase and peak value of X-ray diffraction due to the amorphous phase. The negative electrode active material is produced by preparing a mixture of LiOH.H2O and FeOOH and heating it together with distilled water in an autoclave at 180 to 220° C. for 10 to 20 hours, thereby giving an oxide having the crystalline and amorphous phases of LiFeO2 or an oxide having the crystalline and amorphous phases of LiFeO2 and LiFe5O8.
摘要:
The present invention aims to improve the fire resistance of an electrolytic solution used for a lithium-ion battery and improve the life characteristics of the lithium-ion battery. In the lithium ion battery of the present invention, specific amounts of ethylene carbonate and dimethyl carbonate are used for a non-aqueous electrolytic solution, and trimethyl phosphate is added thereto. Specifically, the non-aqueous electrolytic solution contains 60 vol % or more of ethylene carbonate (EC) and dimethyl carbonate (DMC). The volume ratio of DMC to the sum of EC and DMC is 0.3 to 0.6, and the non-aqueous electrolytic solution contains 3 to 5 wt % of trimethyl phosphate (TMP) with respect to the total weight of the non-aqueous electrolytic solution. Such a non-aqueous electrolytic solution has an effect of improving the self-fire extinguishing property, and thus improves the safety of the lithium-ion battery.
摘要:
To provide a lithium secondary battery excellent in the life characteristic and the power density. A lithium secondary battery, comprising: a positive electrode capable of intercalating and deintercalating lithium; and an negative electrode capable of intercalating and deintercalating lithium, wherein the positive electrode contains a manganese-containing positive electrode active material of a spinel structure and an oxide that coats the surface of this positive electrode active material, wherein the oxide contains a metallic element, wherein the metallic element forms a solid solution with the positive electrode active material, and wherein the atomic concentration of the metallic element is approximately 0 at depths of from 50 to 100 nm from an external surface of the negative electrode.