摘要:
The present invention aims to provide lithium composite compound particles which can exhibit good cycle characteristics and an excellent high-temperature storage property when used as a positive electrode active substance of a secondary battery, and a secondary battery using the lithium composite compound particles. The present invention relates to lithium composite compound particles having a composition represented by the compositional formula: Li 1+x Ni 1-y-z-a Co y Mn z M a O 2 , in which the lithium composite compound particles have an ionic strength ratio A (LiO - /NiO 2 - ) of not more than 0.5 and an ionic strength ratio B (Li 3 CO 3 + /Ni + ) of not more than 20 as measured on a surface of the respective lithium composite compound particles using a time-of-flight secondary ion mass spectrometer.
摘要:
A compound of formula Ab′MgaMbXy or Ab′MgaMb(XOz)y for use as electrode material in a magnesium battery is disclosed, wherein A, M, X, b′, a, b, y, and z are defined herein.
摘要:
The present invention relates to a negative electrode and a method for manufacturing the same. Specifically, the present invention provides a negative electrode comprising a current collector, a first active material layer formed on the current collector, and a second active material layer formed on the first active material layer, wherein the first active material layer comprises carbon-based negative electrode active material particles, and the second active material layer comprises silicon nitride. The negative electrode according to the present invention comprises a second active material layer comprising silicon nitride on a first active material layer. Nitrogen of the silicon nitride may react with lithium ions to form lithium nitride. Therefore, for an electrode using a carbon-based negative electrode active material, the problem that lithium is precipitated on the surface of a negative electrode due to non-reacted lithium ions can be solved by forming the second active material layer. Further, the silicon nitride layer may contain Si nanoparticles, thereby exhibiting a high capacity, and high output characteristics can be produced due to excellent ionic conductivity while suppressing the swelling of Si nanoparticles due to lithium nitride.
摘要:
An electrolytic solution for a non-aqueous electrolyte battery is provided, which is capable of providing an excellent low-temperature output characteristic at -30°C or lower and an excellent cycle characteristic at high temperatures of 45°C or higher. For example, the electrolytic solution contains the following salt having a divalent imide anion. wherein R 1 to R 3 represent a fluorine atom or an alkoxy group, for example, and M 1 and M 2 represent protons or metal cations, for example.
摘要:
A composite containing phosphorus, lithium, iron, sulfur, and carbon as constituent elements wherein lithium sulfide (Li 2 S) is present in an amount of 90 mol% or more, and wherein the crystallite size calculated from the half-width of a diffraction peak based on the (111) plane of Li 2 S as determined by X-ray powder diffraction measurement is 80 nm or less. The composite exhibits a high capacity (in particular, a high discharge capacity) useful as an electrode active material for a lithium-ion secondary battery (in particular, a cathode active material for a lithium-ion secondary battery), without the need for stepwise pre-cycling treatment.
摘要:
The present disclosure relates to an electrode assembly formed by stacking a plurality of electrode units, the electrode assembly including: two or more steps formed by stacking three or more types of the electrode units having different areas, wherein an array of electrode units having a maximum area among the electrode units is positioned in the interior of the electrode assembly, and electrodes having different polarities face each other at an interface between the electrode units having different areas.
摘要:
The disclosure discusses a secondary battery with superior durability and a vehicle configured to mount the same. The secondary battery comprises an electrode structure wherein a cathode is formed at one side of a base material layer having electrical insulating property and an anode is formed at another side of the base material layer. A plurality of electrode structures are stacked with an electrolyte layer interposed therebetween such that the cathode and anode of adjacent electrode structures are on opposite sides of the electrolyte layer.
摘要:
Disclosed are a cathode active material for high voltage and a lithium secondary battery including the same. More particularly, a cathode active material including spinel-type compound particles having a composition represented by Formula 1 below; and metal oxides or metal hydroxides present on surfaces of the spinel-type compound particles, and a lithium secondary battery including the same. €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒL 1+a M x Mn 2-x O 4-z A z €ƒ€ƒ€ƒ€ƒ€ƒ(1) where a, x and z are defined in a specification of the present invention.
摘要:
A battery pack includes a frame member, first and second lithium ion cells, and an isolation plate. The frame member includes a floor, walls formed perpendicular to the floor, and an aperture defined by the walls. The frame member is formed from an electrically non-conductive plastic. The first lithium ion cell includes a first positive terminal, a first negative terminal, and a first electrically conductive housing. The first positive terminal is electrically connected to the first electrically conductive housing. The second lithium ion cell includes a second positive terminal, a second negative terminal, and a second electrically conductive housing. The second positive terminal is electrically connected to the second electrically conductive housing. The isolation plate directly contacts both the first and second electrically conductive housings and electrically isolates the first electrically conductive housing from the second electrically conductive housing. The isolation plate is formed from the electrically non-conductive plastic.