摘要:
Disclosed herein is a composite material for use as an anode for Li-ion batteries and its preparation method and use. The composite material comprises the components represented by the following formula: Ma1-Xa2—Sed1—Zd2—Cc, in which, M represents one or more selected from Sn, Al, Pb, Sb, Si and Bi; X represents one or more selected from Cu, V, Co, Ti, Mo, Mg, W and Zn; Z represents Si and/or Ge; and a1, a2, d1, d2 and c represent the weight ratio of M, X, Se, Z and C to the total amount of M, X, Se, Z and C, respectively, wherein a1+a2 is equal to 0.4-0.7, d1+d2 is equal to 0.05-0.6, c is equal to 0.01-0.25, d2/d1 ranges from 0 to 1/1.4, and a2/a1 ranges from 0 to 1/1.5.
摘要:
Disclosed herein is a Li-ion cell comprising a cathode, an anode, and a separator disposed between the cathode and the anode, wherein the cathode comprises Li-ion cathode active material, and the anode comprises Li-ion anode active material and an additive which has an energy density greater than that of the Li-ion anode active material and which is capable of reacting irreversibly with Li-ions.
摘要:
Disclosed herein is a composite for Li-ion cells, comprising an active material particle for Li-ion cells and an electronically conductive elastic material bound or attached to the active material particle. According to the present invention, the electronically conductive elastic material bound or attached to the active material particle allows the particle to maintain electronic contact with the electrode laminate matrix despite ongoing movement or expansion and contraction of the active material particles, such that the cycling efficiency and reversible capacity of the Li-ion cells prepared from the composite of the present invention is improved.
摘要:
Disclosed herein is a composite for the cathode of Li-ion battery comprising: a base active material represented by Li1+y(Nia—COb—Mnc—Yd)O2 wherein Y is at least one selected from Mg, Zn, Al, Ga, Cu, B, Zr, and Ti, y is 0 to 0.5, a is 0.1 to 0.6, b is 0.05 to 0.5, c is 0.25 to 0.8, d is 0 to 0.02, and the sum of a, b, c and d is 1; and a coating on the base active material comprised of a glassy phase containing the components Li2O, B2O3 and LiX in which LiX is at least one of Li2F2, Li2Cl2 and Li2SO4, relative to the total amount of the glassy phase, the mole percent of Li2O is 43% to 75%, the mole percent of B2O3 is 25% to 57%, the mole percent of LiX is from more than 0% to 20%, and the sum of the mole percents of Li2O, B2O3 and LiX is 100%.
摘要翻译:本发明公开了一种锂离子电池用阴极的复合体,其特征在于,包括:由Li1 + y(Nia-COb-Mnc-Yd)O 2表示的基体活性物质,其中,Y为选自Mg,Zn,Al,Ga, Cu,B,Zr和Ti中,y为0〜0.5,a为0.1〜0.6,b为0.05〜0.5,c为0.25〜0.8,d为0〜0.02,a,b,c和d的和 是1; 以及基体活性材料上的涂层,该玻璃相含有Li 2 O,B 2 O 3和LiX中的至少一种Li 2 F 2,Li 2 Cl 2和Li 2 SO 4的组分Li 2 O,B 2 O 3和LiX的玻璃相,相对于玻璃相的总量,Li 2 O的摩尔百分数 为43%〜75%,B2O3的摩尔百分比为25%〜57%,LiX的摩尔百分比为0%〜20%,Li2O,B2O3和LiX的摩尔百分数为100% 。
摘要:
A negative electrode (12) for a non-aqueous electrochemical cell (10) with an intermetallic host structure containing two or more elements selected from the metal elements and silicon, capable of accommodating lithium within its crystallographic host structure such that when the host structure is lithiated it transforms to a lithiated zinc-blende-type structure. Both active elements (alloying with lithium) and inactive elements (non-alloying with lithium) are disclosed. Electrochemical cells and batteries as well as methods of making the negative electrode are disclosed.
摘要:
Improved lithium vanadium oxide formulations are presented having a nominal formula of LixV3−&dgr;M&dgr;Oy. Herein preferred cation doped vanadium oxide materials, electrodes using such materials, and electrochemical cells including at least one electrode therein comprising such materials are provided.
摘要:
The present invention relates to the field of battery cells, particularly to a pouch cell comprising a packaging seal, a heating element and a fault switch, wherein the fault switch will activate the heating element to generate heat to make the packaging seal delaminate when the inner space of the pouch cell reaches a predetermined pressure, such that the pouch cell vents. The mechanism and components of these venting concepts can be designed to be fully compatible with existing manufacturing methods and typical cell handling situations. The most favorable configuration has both vent device components outside the cell, with nothing passing through or even into the seal. Such a configuration has the advantage of having no impact on the seal integrity relative to a conventional pouch cell, is easy to manufacture, and has improved safety.
摘要:
Embodiments of the invention relate to materials used in secondary batteries and the method for manufacturing the same. To address the problems of the prior art, an object of the present invention is to provide a negative electrode material for a non-aqueous Li-ion cell comprising active component particles capable of reversibly intercalating or alloying with lithium ions with a carbon coating layer containing an electronically conductive, elastic, carbon material capable of reversibly expanding and contracting to maintain electrical contact between the particles within an electrode matrix as the material is cycled electrochemically. Accordingly, several objects and advantages of embodiments of the invention include improved cycle life of high capacity active materials suitable for use in secondary batteries and the high capacity, long life cells.
摘要:
Disclosed herein is a composite for the cathode of Li-ion battery comprising: a base active material represented by Li1+y(Nia—COb—Mnc—Yd)O2 wherein Y is at least one selected from Mg, Zn, Al, Ga, Cu, B, Zr, and Ti, y is 0 to 0.5, a is 0.1 to 0.6, b is 0.05 to 0.5, c is 0.25 to 0.8, d is 0 to 0.02, and the sum of a, b, c and d is 1; and a coating on the base active material comprised of a glassy phase containing the components Li2O, B2O3 and LiX in which LiX is at least one of Li2F2, Li2Cl2 and Li2SO4, relative to the total amount of the glassy phase, the mole percent of Li2O is 43% to 75%, the mole percent of B2O3 is 25% to 57%, the mole percent of LiX is from more than 0% to 20%, and the sum of the mole percents of Li2O, B2O3 and LiX is 100%.
摘要翻译:本发明公开了一种锂离子电池用阴极的复合体,其特征在于,包括:由Li1 + y(Nia-COb-Mnc-Yd)O 2表示的基体活性物质,其中,Y为选自Mg,Zn,Al,Ga, Cu,B,Zr和Ti中,y为0〜0.5,a为0.1〜0.6,b为0.05〜0.5,c为0.25〜0.8,d为0〜0.02,a,b,c和d的和 是1; 以及基体活性材料上的涂层,该玻璃相含有Li 2 O,B 2 O 3和LiX中的至少一种Li 2 F 2,Li 2 Cl 2和Li 2 SO 4的组分Li 2 O,B 2 O 3和LiX的玻璃相,相对于玻璃相的总量,Li 2 O的摩尔百分数 为43%〜75%,B2O3的摩尔百分比为25%〜57%,LiX的摩尔百分比为0%〜20%,Li2O,B2O3和LiX的摩尔百分数为100% 。
摘要:
Disclosed herein is a composite for Li-ion cells, comprising an active material particle for Li-ion cells and an electronically conductive elastic material bound or attached to the active material particle. According to the present invention, the electronically conductive elastic material bound or attached to the active material particle allows the particle to maintain electronic contact with the electrode laminate matrix despite ongoing movement or expansion and contraction of the active material particles, such that the cycling efficiency and reversible capacity of the Li-ion cells prepared from the composite of the present invention is improved.