摘要:
A method, and associated batteries and battery charging units, that involve inducing electric and/or magnetic fields (field-induced current) across an electrode of an electrochemical cell, such as an anode of a battery. The field and current across the electrode may be referred to herein as a transverse current as this current is typically transverse to the ionic charge current that may be applied when charging a battery. The field and current may be induced from connecting AC energy, e.g., AC current, across the electrode or at a discrete point or points of the electrode. The induced field and current may suppress dendrite growth, experienced in conventional batteries without AC energy, among other advantages.
摘要:
A rechargeable lithium cell comprising a cathode, an anode, an optional ion-permeable membrane disposed between the anode and the cathode, a non-flammable salt-retained liquefied gas electrolyte in contact with the cathode and the anode, wherein the electrolyte contains a lithium salt dissolved in or mixed with a liquefied gas solvent having a lithium salt concentration greater than 1.0 M so that the electrolyte exhibits a vapor pressure less than 1 kPa when measured at 20°C, a vapor pressure less than 60% of the vapor pressure of the liquefied gas solvent alone, a flash point at least 20 degrees Celsius higher than a flash point of the liquefied gas solvent alone, a flash point higher than 150°C, or no flash point, wherein the liquefied gas solvent is selected from methane, fluoromethane, difluoromethane, chloromethane, dichloromethane, ethane, fluoroethane, difluoroethane, tetrafluoroethane, chloroethane, dichloroethane, tetrachloroethane, propane, fluoropropane, chloropropane, ethylene, fluoroethylene, chloroethylene, or a combination thereof.
摘要:
A lithium-based solid state battery (10) including a stack of cells (12), each cell (12) comprising a positive electrode (14), a negative electrode (16) and a solid electrolyte (18) disposed between the positive electrode (14) and the negative electrode (16), the lithium-based solid state battery (10) including a container (22), the stack of cells being enclosed in the container (22) and the lithium-based solid state battery (10) including sulfur (24) attached to the container (22).
摘要:
본 발명은 전극 조립체, 상기 전극 조립체를 함침시키는 비수 전해액 및 상기 전극조립체와 상기 비수 전해액을 수용하는 전지 케이스를 포함하는 리튬 이차전지를 제조하는 단계; 상기 리튬 이차전지를 포메이션하는 단계; 및 리튬 이차전지 내부의 발생 가스를 제거하는 탈기 공정을 실시하는 단계;를 포함하는 리튬 이차전지의 제조 방법에 있어서, 상기 비수 전해액은 리튬염, 유기용매 및 첨가제로 1,2,3-트리플루오로벤젠을 포함하며, 상기 1,2,3-트리플루오로벤젠은 비수 전해액 전체 중량을 기준으로 0.1 중량% 내지 10 중량%로 포함되고, 상기 포메이션하는 단계는 45℃ 내지 80℃에서, 0.5 kgf/㎠ 내지 5 kgf/㎠ 압력하에서 3.5V 내지 4.5V의 전압을 가하면서, 전지 용량(SOC)을 10% 내지 80%까지 충전하여 실시하는 것을 포함하는 것인 리튬 이차전지의 제조방법에 관한 것이다.
摘要:
一种添加剂的应用、电极浆料、添加剂浆料、锂离子电池正极或负极及其制备方法和锂离子电池,涉及锂离子电池技术领域。其中,添加剂应用于制备锂离子电池正极和/或负极中,所述添加剂为MO a (OH) b ·cH 2 O,其中,M为IIA族金属元素、IB族金属元素、IIB族金属元素、IIIB族金属元素、IVB族金属元素、VB族金属元素、VIB族金属元素、VIIB族金属元素、VIII族金属元素、IIIA族金属元素、IVA族金属元素、VA族金属元素、硼和硅中的至少一种元素,a>0,b>0,c≥0。将所述的添加剂用于制备锂离子电池正极和/或负极,能够明显提高由此制备得到的锂离子电池的安全性。
摘要:
A surfactant is provided that when combined with an aqueous solution containing bromine, such as in a zinc-bromine or hydrogen-bromine flow battery, enhances the dispersion of the bromine within the solution. The surfactants that can be employed to improve the dispersion of bromine within the electrolyte system include, but are not limited to, surfactants that include, but are not limited to, surfactants that possess a good stability in oxidative environment and a minimal foaming ability, such as the surfactant sodium cumene sulfonate. An appropriate amount may be within 0.01% to 3% by weight of the electrolyte solution.
摘要:
Devices, systems, and techniques for identifying the growth of a dendrite material within a battery cell (100). The method comprises a battery management system receiving an output from a sensing circuitry (170) within the battery indicative of a first voltage level; detecting a change from the first voltage level to a second voltage level indicative of an internal short within an electrically insulating separator (130) having a sensing sheet; determining a resistance and a two-dimensional position of the internal short within the sensing sheet; and identifying a dendrite material based on the resistance of the internal short.
摘要:
Die vorliegende Erfindung betrifft ein Batteriesystem (10) für ein Fahrzeug oder einen stationären Energiespeicher mit einer Batterie (20). Eine erste von mehreren Batteriezellen (21, 22) der Batterie (20) umfasst einen elektrochemischen Teil mit mehreren Elektroden und wenigstens einem Separator, der beim Erreichen einer ersten Temperatur für in dem elektrochemischen Teil erzeugbare Ionen undurchlässig wird. Die erste Batteriezelle (21) umfasst eine Schnellentladeeinheit, die mittels einer Steuereinheit (30) des Batteriesystems (10) zwischen zwei von innerhalb und/oder außerhalb der ersten Batteriezelle (21) kontaktierbare Batteriezellterminals der ersten Batteriezelle (21) zuschaltbar ist. Die Schnellentladeeinheit ist dazu ausgebildet, die erste Batteriezelle (21) mittels eines ersten Stroms zu entladen. Ein erster Widerstandswert der Schnellentladeeinheit ist derartig ausgewählt, dass der erste Strom während eines Durchfließens der Schnellentladeeinheit und der ersten Batteriezelle (21) eine derartige Erwärmung des elektrochemischen Teils verursacht, dass der wenigstens eine Separator die erste Temperatur erreicht.
摘要:
The present invention is directed towards a process for making a particulate material according to the general formula (I): Ni a CO b Mn c M d (O) x (OH) y , wherein M is selected from Al and Ti, x is in the range of from 0.01 to 0.9, y is in the range of from 1.1 to 1.99, a is in the range of from 0.3 to 0.85, b is in the range of from 0.05 to 0.4, c is in the range of from 0.1 to 0.5, d is in the range of from 0.001 to 0.03, with a + b + c + d = 1 said process comprising the following steps: (a) providing an aqueous slurry of particles of aluminium hydroxide or titanium dioxide, (b) adding an aqueous solution of water-soluble salts of nickel, cobalt and manganese and a solution of alkali metal hydroxide to the slurry according to step (a), thereby co- precipitating a layer of a mixed hydroxide of nickel and cobalt and manganese hydroxide on the particles according to step (a), (c) removing particles of (Ni a CO b Mn c Al d )(OH) 2+d or (Ni a CO b Mn c Ti d )(OH) 2+2d so obtained and drying them in the presence of oxygen.
摘要翻译:本发明涉及制备根据通式(I)的颗粒材料的方法:NiaCObMncMd(O)x(OH)y,其中M选自Al和Ti,x在0.01至 0.9,y在1.1至1.99的范围内,a在0.3至0.85的范围内,b在0.05至0.4的范围内,c在0.1至0.5的范围内,d在 范围为0.001至0.03,a + b + c + d = 1,所述方法包括以下步骤:(a)提供氢氧化铝或二氧化钛颗粒的含水浆液,(b)加入水溶液, 根据步骤(a),将镍,钴和锰的可溶性盐和碱金属氢氧化物溶液加入到浆料中,由此根据步骤(a)将颗粒上的镍和钴和氢氧化锰的混合氢氧化物的一层共沉淀 ),(c)除去所得的(NiaCObMncAld)(OH)2 + d或(NiaCObMncTid)(OH)2 + 2d的颗粒,并在 氧气。