摘要:
Provided is a lithium secondary battery, comprising a cathode, an anode, and a porous separator or electrolyte disposed between the cathode and the anode, wherein the anode comprises: (a) an anode active layer containing a layer of lithium or lithium alloy, in a form of a foil, coating, or multiple particles aggregated together, as an anode active material; and (b) a thin layer of a high-elasticity polymer, disposed between the anode active layer and the porous separator or electrolyte; the polymer having a recoverable tensile strain from 2% to 1,500%, a lithium ion conductivity no less than 10 -6 S/cm (typically up to 5x10 -2 S/cm) at room temperature, and a thickness from 1 nm to 10 µm, wherein the high-elasticity polymer contains a polyrotaxane network having a rotaxane structure or a polyrotaxane structure at a crosslink point of the polyrotaxane network.
摘要:
The complex transition metal phosphonates include one or more of compounds with the chemical formula: (1) A x M y (R(PO 3 )2) z ; (2) A x M y (RPO 3 ) z ; (3) A x M y (R(PO 3 )2; nHO; (4) A x M y (RPO 3 ); nH 2 O; and (5) A x M y (R(PO 3 )2) z (X) t , where A is an alkali metal or an alkaline earth metal, M is a divalent or trivalent transition metal, R is an organic group, and X is OH, F or CI. For example, A is Li, Na, K, Cs, Rb, Mg, Ca and/or combinations thereof. M is Ni, Co, Mn, Fe, Cr, V, Ti, Cu and/or combinations thereof. R is a C1-C5 alkyl group; e.g., CH 2 , C 2 H 4 , or C 3 H 6 , The complex transition metal phosphonates can be used as cathode or anode materials for rechargeable batteries.
摘要翻译:复合过渡金属膦酸盐包括一种或多种化学式为(1)A x M y(R(PO) 子> 3 子>)2)<子>ž子>; (2)A M y (RPO 3 ) z sub>; (3)A×M×y(R(PO 3)2; nHO;(4)A×M× (RPO_3); nH_2_0;以及(5)A x y (R(PO 3)2)z(X)t,其中A是碱金属或碱土金属 M为二价或三价过渡金属,R为有机基团,X为OH,F或Cl,例如A为Li,Na,K,Cs,Rb,Mg,Ca和/或其组合,M 是Ni,Co,Mn,Fe,Cr,V,Ti,Cu和/或它们的组合; R是C 1 -C 5烷基;例如CH 2 C 2, H 4或C 3 H 6。复合过渡金属膦酸盐可用作可充电电池的阴极或阳极材料。 u> / p>
摘要:
A process for producing a lithium battery, comprising: (A) Assembling a porous cell framework composed of a foamed anode current collector, a foamed cathode current collector, and a porous separator disposed between the two collectors; wherein the current collector(s) has a thickness no less than 100 µm and at least 80% by volume of pores; (B) Preparing a first suspension of an anode active material dispersed in a first liquid electrolyte and a second suspension of a cathode active material dispersed in a second liquid electrolyte; and (C) Injecting the first suspension into pores of the anode current collector to form an anode and injecting the second suspension into pores of the cathode current collector to form a cathode to an extent that the anode active material and the cathode active material combined constitutes an electrode active material mass loading no less than 40% of the total battery cell weight.
摘要:
The present invention provides a terminal assembly, and storage batteries comprising a terminal assembly, wherein the terminal assembly comprises a conductive cup-shaped member comprising a terminal wall in electric communication with a terminal of the electrochemical cell when the terminal wall is in contact with the terminal; a sidewall; and a rim separated from the terminal wall by the sidewall; and a bipolar endplate having first and second surfaces coplanar with the terminal wall and joining to the rim at the first surface, the joining enabling bi-directional uniform current flow through the cup-shaped member between the terminal and the endplate when the terminal wall is in contact with the terminal, the endplate having an electrochemically active region comprising a first surface area enclosed by the rim and a remaining second surface area outside an outer periphery of the rim, the first and second surface areas being substantially equal.
摘要:
The present invention provides a bipolar electrode that is useful in zinc-halide electrochemical cells or battery stacks. The bipolar electrode comprises a titanium bipolar electrode plate wherein a cathode assembly is disposed on a front surface of the electrode plate. The cathode assembly comprises a titanium cathode cage, a separator, and carbon material, wherein the cathode cage holds the carbon material in electrical communication with the front surface of the electrode plate.
摘要:
Provided herein are composites made up of carbon-enriched open frameworks, and mechanochemical methods of producing such composites. Such open frameworks may include metal-organic frameworks (MOFs), including for example zeolitic imidazolate frameworks (ZIFs). Such composites may be suitable for use as electrode materials, or more specifically for use in batteries.
摘要:
A redox flow battery that uses metal complexes with amino-alcohol ligands as the electroactive species in alkaline electrolytes to store electrical energy. The battery includes a first and a second electrolyte storage unit that each includes a metal complex selected from transition metals with an amino-alcohol ligand as an electroactive species in an alkaline electrolyte. Such solutions in these electrolyte storage units are each prepared by mixing stoichiometric amounts of a metal ion and an amino-alcohol ligand in water to form a metal- ligand mixture followed by adding an amount corresponding to 3-5 moles/liter of an alkaline electrolyte solution to each metal-ligand mixture to form a metal complex with the amino- alcohol ligand in the alkaline electrolyte to be used by a storage unit. As a result, the operational and maintenance costs of the redox flow battery are reduced while reducing the complexity of the manufacturing process.
摘要:
La présente invention concerne l'utilisation comme matériau actif d'électrode de composés comprenant au moins une entité de formule (I): dans laquelle le groupement phénylique est substitué par un à quatre substituant(s) R, identique(s) ou différent(s), choisi(s) parmi un atome d'hydrogène, un atome d'halogène choisi parmi le fluor, le chlore, le brome ou l'iode, un groupement –C(=S)-S - C + , un groupement –O - C + , un groupement –S - C + , avec C + étant un cation alcalin choisi parmi Li + , Na + et K + , un radical(C 1 -C 12 )alkyle, un radical (C 2 -C 12 )alkényle, un radical (C 6 -C 14 )aryle ou hétéroaryle; ou deux substituants R vicinaux pouvant le cas échéant être liés entre eux pour former ensemble un cycle de 3 à 7 chaînons incluant éventuellement un autre hétéroatome choisi parmi N, O ou S; à l'état de base ou de sel; ainsi que ses formes tautomères. Elle concerne encore un matériau d'électrode, une électrode et une batterie secondaire au lithium, sodium ou potassium,obtenus à partir de ces composés.