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1
US10186706B2
Publication/Patent Number: US10186706B2
Publication date: 2019-01-22
Application number: 14/891,431
Filing date: 2014-05-19
Abstract: Provided is a novel positive electrode active material which can effectively suppress the quantity of gas generated by the reaction with an electrolytic solution. Proposed is a positive electrode active material for a lithium secondary battery including positive electrode active material particles obtained by equipping the entire surface or a part of a surface of lithium manganese-containing composite oxide particles (also referred to as the “core particles”) operating at a charging voltage in a region exceeding 4.3 V in a metal Li reference potential with a layer A containing at least titanium (Ti), aluminum (Al), zirconium (Zr), or two or more kinds of these. Provided is a novel positive electrode active material which can effectively suppress the quantity of gas generated by the reaction with an electrolytic solution. Proposed is a positive electrode active material for a lithium secondary battery including positive electrode active ...more ...less
2
US10170748B2
Publication/Patent Number: US10170748B2
Publication date: 2019-01-01
Application number: 15/202,292
Filing date: 2016-07-05
Inventor: Young, Kwo  
Abstract: Disclosed is an anode for a lithium battery comprising a body of carbon, such as graphitic carbon, having a layer of a Group IV element or Group IV element-containing substance disposed upon its electrolyte contacting surface. Further disclosed is an anode comprising a body of carbon having an SEI layer formed thereupon by interaction of a layer of Group IV element or Group IV element-containing substance with an electrolyte material during the initial charging of the battery. Disclosed is an anode for a lithium battery comprising a body of carbon, such as graphitic carbon, having a layer of a Group IV element or Group IV element-containing substance disposed upon its electrolyte contacting surface. Further disclosed is an anode comprising a body of ...more ...less
3
US10170749B2
Publication/Patent Number: US10170749B2
Publication date: 2019-01-01
Application number: 15/175,715
Filing date: 2016-06-07
Abstract: Provided is a lithium or sodium metal battery having an anode, a cathode, and a porous separator and/or an electrolyte, wherein the anode contains an integral 3D graphene-carbon hybrid foam composed of multiple pores, pore walls, and a lithium-attracting metal residing in the pores; wherein the metal is selected from Au, Ag, Mg, Zn, Ti, Na, K, Al, Fe, Mn, Co, Ni, Sn, V, Cr, or an alloy thereof and is in an amount of 0.1% to 50% of the total hybrid foam weight or volume, and the pore walls contain single-layer or few-layer graphene sheets chemically bonded by a carbon material having a carbon material-to-graphene weight ratio from 1/200 to 1/2, wherein graphene sheets contain a pristine graphene or non-pristine graphene selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof. Provided is a lithium or sodium metal battery having an anode, a cathode, and a porous separator and/or an electrolyte, wherein the anode contains an integral 3D graphene-carbon hybrid foam composed of multiple pores, pore walls, and a lithium-attracting metal residing in the ...more ...less
4
US10170750B2
Publication/Patent Number: US10170750B2
Publication date: 2019-01-01
Application number: 15/264,321
Filing date: 2016-09-13
Abstract: A lithium sulfur cell has a cathode including Li3PS4+n (0<n<9), an electrolyte, and an anode comprising lithium. A cathode for a lithium sulfur cell is also disclosed.
5
US10170758B2
Publication/Patent Number: US10170758B2
Publication date: 2019-01-01
Application number: 14/896,458
Filing date: 2014-05-28
Abstract: A composite oxide with x wt.—parts Li2TiO3, preferably in its cubic modification of space group Fm-3m, y wt.—parts TiO2, z wt.—parts of Li2CO3 or LiOH, u wt.—parts of a carbon source and optionally v wt.—parts of a transition or main group metal compound and/or a sulphur containing compound, wherein x is between 2 and 3, y is between 3 and 4, z is between 0.001 and 1, u is between 0.05 and 1 and 0≤v<0.1 and the metal of the transition or main group metal compound is selected from Al, Mg, Ga, Fe, Co, Sc, Y, Mn, Ni, Cr, V or mixtures thereof. Also, a process for the preparation of a composition of non-doped and doped lithium titanate Li4Ti5O12, including secondary agglomerates of primary particles, using the composite oxide and its use as anode material in secondary lithium-ion batteries. A composite oxide with x wt.—parts Li2TiO3, preferably in its cubic modification of space group Fm-3m, y wt.—parts TiO2, z wt.—parts of Li2CO3 or LiOH, u wt.—parts of a carbon source and optionally v wt.—parts of a transition or main group ...more ...less
6
US10170764B2
Publication/Patent Number: US10170764B2
Publication date: 2019-01-01
Application number: 13/170,773
Filing date: 2011-06-28
Abstract: An object is to form a positive electrode active material having small and highly uniform particles by a simple process. A template is formed by forming holes in the template by a nanoimprinting method, and the template is filled with a gel-like LiFePO4 material, whereby small-sized LiFePO4 particles are formed and are used as the positive electrode active material of a secondary battery. The particle size can be reduced to less than 50 nm. Further, when the LiFePO4 particles are sintered, the template may be burned down. By making the particle size of the positive electrode active material smaller than the conventional one, a positive electrode that lithium is injected into and extracted from easily can be manufactured. An object is to form a positive electrode active material having small and highly uniform particles by a simple process. A template is formed by forming holes in the template by a nanoimprinting method, and the template is filled with a gel-like LiFePO4 material, whereby ...more ...less
7
US10199634B2
Publication/Patent Number: US10199634B2
Publication date: 2019-02-05
Application number: 14/893,831
Filing date: 2014-06-12
Abstract: A method of preparing an amorphous film of lithiated metal sulfide or oxysulfide of formula LiαM(O1-βSβ)γ using a lithiated target material: M being advantageously selected from the group comprising Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, Zr, Nb, Mo, Ag, Cd, In, Sn, Sb, Ta, W, Pb, Bi, and mixtures thereof; and α≥0.5; 1≥β≥⅔; 2≥α/γ≥⅓. A method of preparing an amorphous film of lithiated metal sulfide or oxysulfide of formula LiαM(O1-βSβ)γ using a lithiated target material: M being advantageously selected from the group comprising Al, Ti, V, Cr, Mn, Fe, Co, Ni ...more ...less
8
US10199648B2
Publication/Patent Number: US10199648B2
Publication date: 2019-02-05
Application number: 15/261,418
Filing date: 2016-09-09
Abstract: According to one embodiment, there is provided an electrode. The electrode includes an orthorhombic Na-containing niobium titanium composite oxide as a first composite oxide and a second composite oxide represented by a general formula of Li2+aNa2+bTi6O14, wherein −0.2≤a≤2 and −0.2≤b≤0.2. According to one embodiment, there is provided an electrode. The electrode includes an orthorhombic Na-containing niobium titanium composite oxide as a first composite oxide and a second composite oxide represented by a general formula of Li2+aNa2+bTi6O14, wherein ...more ...less
9
US10199678B2
Publication/Patent Number: US10199678B2
Publication date: 2019-02-05
Application number: 15/114,686
Filing date: 2015-01-30
Abstract: The present invention is a negative electrode material for a non-aqueous electrolyte secondary battery, including negative electrode active material particles containing a silicon compound expressed by SiOx, where 0.5≤x≤1.6, the silicon compound containing in its interior a lithium compound and one or more ions selected from Group 1 metal ions, Group 2 metal ions, and substitutable ammonium ions. This negative electrode material for a non-aqueous electrolyte secondary battery can increase the battery capacity and improve the cycle performance and the battery initial efficiency. The present invention is a negative electrode material for a non-aqueous electrolyte secondary battery, including negative electrode active material particles containing a silicon compound expressed by SiOx, where 0.5≤x≤1.6, the silicon compound containing in its ...more ...less
10
US10224125B2
Publication/Patent Number: US10224125B2
Publication date: 2019-03-05
Application number: 15/795,727
Filing date: 2017-10-27
Abstract: The present invention is directed to compositions comprising at least one layer or at least two layers, each layer comprising a substantially two-dimensional array of crystal cells, having first and second surfaces, each crystal cell having the empirical formula of Mn+1Xn, where M, X, and n are described in the specification, and devices incorporating these compositions. The present invention is directed to compositions comprising at least one layer or at least two layers, each layer comprising a substantially two-dimensional array of crystal cells, having first and second surfaces, each crystal cell having the empirical formula of Mn+1Xn, where ...more ...less
11
US10211460B2
Publication/Patent Number: US10211460B2
Publication date: 2019-02-19
Application number: 14/387,420
Filing date: 2013-04-02
Abstract: A positive electrode for a battery includes a positive active material, a conductive agent, and a copolymer. The copolymer includes a constituent unit (a) represented by the following general formula (1) and a constituent unit (b) represented by the following general formula (2): (wherein R1, R2, R3, R5, R6, R7 and R9 are the same or different and denote a hydrogen atom, a methyl group or an ethyl group, R4 denotes a hydrocarbon group having 8 to 30 carbon atoms, R8 denotes a linear or branched alkylene group having 2 to 4 carbon atoms, X1 and X2 denote an oxygen atom or NH, and p denotes a number of 1 to 50). A positive electrode for a battery includes a positive active material, a conductive agent, and a copolymer. The copolymer includes a constituent unit (a) represented by the following general formula (1) and a constituent unit (b) represented by the following general formula ...more ...less
12
US10230089B2
Publication/Patent Number: US10230089B2
Publication date: 2019-03-12
Application number: 14/381,542
Filing date: 2012-03-19
Abstract: The present invention provides an electrolyte holder for a lithium secondary battery capable of holding an electrolytic solution inside electrodes or at an interface between the separator and each of the electrodes, preventing electrolyte shortage inside the electrodes, and restraining dendrite from precipitating and growing and also provide the lithium secondary battery, using the electrolyte holder, which is capable of achieving a cycle life to such an extent that the lithium secondary battery can be used for industrial application. An electrolyte holder (3) for use in the lithium secondary battery consists of a multi-layer structure having at least two hydrophilic fibrous layers (A, B) having different porosities. The electrolyte holder (3) is composed of an electrode group formed by winding a cathode (2) and an anode (1) or laminating the cathode (2) and the anode (1) one upon another with an electrolyte holder (3) serving as a separator interposed between the cathode (2) and the anode (1). The organic electrolytic solution is permeated into the electrode group or the electrode group is immersed in the organic electrolytic solution. A porosity (40% to 80%) of the fibrous layer (A) disposed at an interface between the fibrous layer (A) and the anode (1) is set smaller than a porosity (60% to 90%) of the fibrous layer (B) disposed at an interface between the fibrous layer (B) and the cathode (2). An average porosity of the entire fibrous layer is set to not less than 50%. The fibrous layers are formed by using cellulose fibers as a main material thereof. An active substance for use in the anode (1) is a carbon material. The present invention provides an electrolyte holder for a lithium secondary battery capable of holding an electrolytic solution inside electrodes or at an interface between the separator and each of the electrodes, preventing electrolyte shortage inside the electrodes, and ...more ...less
13
US10227288B2
Publication/Patent Number: US10227288B2
Publication date: 2019-03-12
Application number: 15/012,470
Filing date: 2016-02-01
Abstract: Provided herein are functionally substituted fluoropolymers suitable for use in liquid and solid non-flammable electrolyte compositions. The functionally substituted fluoropolymers include perfluoropolyethers (PFPEs) having high ionic conductivity. Also provided are non-flammable electrolyte compositions including functionally substituted PFPEs and alkali-metal ion batteries including the non-flammable electrolyte compositions. Provided herein are functionally substituted fluoropolymers suitable for use in liquid and solid non-flammable electrolyte compositions. The functionally substituted fluoropolymers include perfluoropolyethers (PFPEs) having high ionic conductivity. Also provided are ...more ...less
14
US10224540B2
Publication/Patent Number: US10224540B2
Publication date: 2019-03-05
Application number: 14/910,695
Filing date: 2014-08-08
Abstract: A Li-ion battery in one embodiment includes a lithium based compound in a cathode, a first porous silicon portion in an anode, and a layer of atomic layer deposited (ALD) alumina coating the first porous silicon portion and contacting the cathode.