Abstract: An energy storage device is provided in the present technology. The energy storage device includes one or more electrodes, each of the one or more electrodes including a solid state electrolyte material having a first average particle size less than 10 ?m, wherein the solid state electrolyte material is ionically and electronically conductive, and an electrode active material having a second average particle size less than 30 ?m, wherein the solid state electrolyte material and the electrode active material are mixed.

Abstract: An energy storage device is provided in the present technology. The energy storage device includes an anode having a p-type material, a cathode having a n-type material, and a separator disposed between the anode and the cathode, wherein the separator is composed of an insulating material, and wherein a valence band maximum (VBM) of the p-type material and a conduction band minimum (CBM) of the n-type material fall within an energy band gap of the insulating material.

Abstract: The invention relates to a method for preparing transitional-metal particles (cathode particle precursor) under a co-precipitation reaction. In this method, by feeding different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, colleting the slurry, treating with water, and drying to get a cathode particle precursor. Mixing the cathode particle precursor with a lithium source and calcining to yield core-shell structured cathode active particles. Such cathode active particle can be used to prepare cathode of lithium-ion battery.

Abstract: The main purpose of the invention is to provide a method for recovery of cathode materials, cathode materials and electric vehicles. The method for recovery of cathode materials comprises the following steps: step 1, adding cathode materials and a metal reducing agent (MRA) to a molten salt (MS), the cathode materials and the MRA performing a reduction reaction in MS to obtain precipitates and MS solutions. By using the method for recovery of cathode materials of the present invention, main metal elements in cathode materials of a secondary battery are effectively recovered, and compared with pyrometallurgical or hydrometallurgical methods in the prior art, the recovery rate of a metal mixture can reach unexpected 90% or more. Furthermore, the method of the present invention is environmentally friendly, all raw materials can be recycled and reused and no exhaust gases or waste liquids contaminating the environment are discharged.

Abstract: The present invention provides an electrolyte for a secondary battery and a secondary battery including same. The electrolyte for a secondary battery comprises a solvent comprising a compound having a structure represented by Formula, wherein R is selected from H, F, CH3 and CF3; R? and R? are each independently selected from H, CH3, CH2CH3, CF3, CH2CF3 and CF2CH3; and wherein based on the total weight of the solvent, the amount of the compound represented by formula I ranges from 81 wt % to 99 wt %; or the amount of the compound represented by formula I ranges from 90 wt % to 99 wt % By using the electrolyte for a secondary battery and the secondary battery including same of the present invention, the formed SEI film is more stable thereby prevent the electrolyte further reduced by anode, and increased battery life and cycle stability could be achieved.

Abstract: The disclosure provides a modified positive electrode material, a preparation method therefor, and a lithium ion battery. The modified positive electrode material includes a core and a coating layer. The core contains Mn and Ni, the coating layer includes a first oxide coating layer coating on a surface of the core. A first element forming the first oxide coating layer is selected from one or more of a group of Si, Ti, V, Zr, Mo, W, Bi, Nb, and Ru. The first element with a high-valent state can partially enter the surface core structure of the positive electrode material to occupy the sites of manganese ions, and form a chemical bond stronger than a Mn—O. Thus, O and Mn in the core structure are difficult to precipitate, and the coating layer is difficult to fall off in cycle process. Moreover, structural stability of the modified positive electrode material is improved.

Abstract: The present disclosure provides a method for preparing full-gradient particle precursors, and the full-gradient particle precursor prepared thereby. By controlling different types of anion compositions and/or cation compositions gradually changed to other types, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, collecting the precipitated particle, treating with water, and drying to yield the particle precursor. After being washed and dried, the particle precursor is further mixed with lithium source, after calcining to yield cathode active particles. The cathode active particles can be used to prepare cathode of lithium-ion battery.

Abstract: A solid state electrolyte is provided, which includes a ligand composed of a ceramic powder and a nitrogen containing aromatic copolymer, the ceramic powder is the core and the receptor, the nitrogen containing aromatic copolymer is comprised by a first polymer and a second polymer, the first polymer is aromatic polyamide, the second polymer is selected from the group consisting of P2VP, P4VP, PVA, PEO and PAN. The solid state electrolyte can form good contact interfaces at the anode and cathode electrodes. A lithium-ion battery including the solid state electrolyte is also provided.

Abstract: The invention relates to a method for preparing core-shell structured particle precursor under a co-precipitation reaction. In this method, by controlling the feeding of different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a precipitated particle slurry, filtering, and drying the precipitated particle slurry to yield the particle precursor. The invention also provides a particle precursor which includes a core-shell structure. The shell is made of gradient anions and/or cations. Such particle precursor can be used to prepare cathode of lithium-ion battery.

Abstract: A cathode active material and a Lithium-ion electrochemical system thereof are provided. The lithium-ion cathode material is described by xLiMO2*(1-x)(LiaM?1-a)Oy, M and M? independently comprises one or more metal ions that together have a combined average oxidation state between 3+ or 2+, x is selected from 0.25 to 1, a is selected from 0 to 0.75, and y is selected from 0.625 to 1.

Abstract: A cathode active material and a Lithium-ion electrochemical system thereof are provided. The lithium-ion cathode material is described by xLiMO2*(1?x)(LiaM?1?a)Oy, M and M? independently comprises one or more metal ions that together have a combined average oxidation state between 3+ or 2+, 1>x?0.5, 0.75?a>0, 1?y?0.625.

Abstract: The invention relates to a method for preparing cathode particles under a co-precipitation reaction by feeding NaOH and metal sulfate solution into different vessels. The invention further provides a cathode active material having the cathode particles. By the method of the invention, the number density distribution of prepared particles is much smaller than feeding NaOH and metal sulfate together into same vessel.

Abstract: The invention relates to a method for preparing core-shell structured particle precursor under a co-precipitation reaction. In this method, by controlling the feeding of different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a precipitated particle slurry, filtering, and drying the precipitated particle slurry to yield the particle precursor. The invention also provides a particle precursor which includes a core-shell structure. The shell is made of gradient anions and/or cations. Such particle precursor can be used to prepare cathode of lithium-ion battery.

Abstract: The invention relates to a method for preparing transitional-metal particles (cathode particle precursor) under a co-precipitation reaction. In this method, by feeding different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, colleting the slurry, treating with water, and drying to get a cathode particle precursor. Mixing the cathode particle precursor with a lithium source and calcining to yield core-shell structured cathode active particles. Such cathode active particle can be used to prepare cathode of lithium-ion battery.

Abstract: The present disclosure provides a method for preparing full-gradient particle precursors, and the full-gradient particle precursor prepared thereby. By controlling different types of anion compositions and/or cation compositions gradually changed to other types, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, collecting the precipitated particle, treating with water, and drying to yield the particle precursor. After being washed and dried, the particle precursor is further mixed with lithium source, after calcining to yield cathode active particles. The cathode active particles can be used to prepare cathode of lithium-ion battery.

Abstract: An analytical method for precipitated particles using a co-precipitation reaction in includes feeding streams and a tracking metal into a reaction vessel; collecting a precipitated product containing the tracking metal from the reaction vessel in increments of time to obtain product samples; filtering each collected product sample to separate precipitated particles from filtrate; and performing elemental analysis for the tracking metal in the precipitated particles of each collected product sample and measuring a concentration of the tracking metal in the precipitated particles, to obtain a residence time distribution of the precipitated particles in the reaction vessel according to the concentration of the tracking metal in the precipitated particles. Therefore the preferred residence time of the precipitated particles in the reaction vessel can be ascertained, so that it is clear when the precipitated particles should be collected from the reaction vessel.

Abstract: A method for producing cathode particles is provided. The method includes: providing a plurality of precipitation zones from i=1 to N, wherein the precipitation zones are connected in series, each precipitation zone comprises a feed stream (ai) providing the precipitation cations, a feed stream (bi) providing the precipitation anions, a continuous outflow (ci) of precipitation particle slurry to the next precipitation zone, and a continuous inflow (ci?1) of precipitation particle slurry from the prior precipitation zone, and forming, in the precipitation zones, precipitated particles, and finally to form, in the precipitation zone N, precursor particles comprised of N layers, wherein layer i of each particle is precipitated and formed in the precipitation zone i, wherein N is not less than 3, and when i=1, there is no inflow (ci?1).

Abstract: A cathode active material and a Lithium-ion electrochemical system thereof are provided. The lithium-ion cathode material is described by xLiMO2*(1-x)(LiaM?1-a)Oy, M and M? independently comprises one or more metal ions that together have a combined average oxidation state between 3+ or 2+, 1>x?0.5, 0.75?a>0, 1?y?0.625.

Abstract: The invention relates to a method for preparing cathode particles under a co-precipitation reaction by feeding NaOH and metal sulfate solution into different vessels. The invention further provides a cathode active material having the cathode particles. By the method of the invention, the number density distribution of prepared particles is much smaller than feeding NaOH and metal sulfate together into same vessel.

Abstract: The present invention provides an analytical method for precipitated particles during co-precipitation reaction, comprising: running a co-precipitation reaction in a reaction vessel to form a precipitated product; injecting a tracking metal to the reaction vessel for a given time duration; collecting the precipitated product containing the tracking metal from the reaction vessel in increments of time to obtain multiple product samples; filtering each collected product sample to separate precipitated particles from filtrate; performing elemental analysis for the tracking metal in the precipitated particles of each collected product sample, to obtain the residence time distribution of the precipitated particles in the reaction vessel according to the concentration of the tracking metal in the precipitated particles.