Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology Limited

Chuying Ouyang

Yongsheng Guo

Shuojian Su

Jiarui Tian

Na Liu

Guodong Chen

Cong Cheng

Yuanyuan Lan

Xinxin Zhang

Bao Tu

Changsong Chen

Weifeng Liang

Yandong Wang

Jixiang Wang

Yuqun Zeng

Jiazheng Wang

Chengyong Liu

Zhaohui Liu

Yuejuan Wan

Jiadian Lan

Chengdong Sun

Juanjuan Sun

Wenguang Lin

Yi Zheng

Wenming Guo

Haiyang Kang

Limei Zhou

Binyi Chen

Ling Xiang

Yanfen Wang

Xuan Li

Ben Liu

Xiaoji Zheng

Yu Ma

Xiaoxia Chen

A positive electrode active material is granular and comprises a compound represented by formula 1: (NaxAy)a□bM1[M2(CN)], wherein A is selected from at least one of alkali metal elements and has an ionic radius greater than that of sodium, M1 and M2 are each independently selected from at least one of transition metal elements, 0<y≤0.2, 0<x+y≤2, 0≤δ≤1, a+b=2, 0.85≤a≤0.98, □ represents a vacancy, and b represents the number of vacancies; and when the positive electrode active material is dissolved, at a temperature of 20° C., into an aqueous solution having a concentration of 5 g/100 g water, a pH value of the aqueous solution is in a range of 7.6 to 8.5. The positive electrode active material has good cycling and rate performance, and a high specific capacity.

Positive electrode active material, sodium ion secondary battery comprising same and power consuming device

The present application provides a separator, a secondary battery, a battery module, a battery pack, and a power consumption apparatus. The separator may include a porous base film and a bonding layer coated on one or both faces of the porous base film. The bonding layer may be composed of ethylene carbonate and an optional nucleating agent.

Separator having coating containing ethylene carbonate, secondary battery, battery module, battery pack, and power consumption apparatus

This application provides a separator, an electrical apparatus including the separator, and preparation methods thereof. The separator includes a coating layer containing an organic-inorganic hybrid composite compound and provides improved performance in a number of aspects, and the organic-inorganic hybrid composite compound is formed by periodically assembling, along at least one spatial direction, basic units expressed by formula I, Lx(MaCb)y·Az. This application further provides a battery and electrical device containing such separator, preparation methods thereof, organic-inorganic hybrid composite compound for improving performance of a separator.

Separator, electrical apparatus containing such separator, and preparation method thereof

This application provides an A/M/X crystalline material, a photovoltaic device, and preparation methods thereof. The photovoltaic device includes a photoactive crystalline material layer (). The photoactive crystalline material layer () includes a penetrating crystal grain (), where the penetrating crystal grain () is a crystal grain penetrating through the photoactive crystalline material layer (), and a percentage p of a quantity of penetrating crystal grains () in a total quantity of crystal grains of the photoactive crystalline material layer () is ≥80%. The photoactive crystalline material layer () includes a backlight side () and a backlight crystal grain (), where the backlight crystal grain () is a crystal grain exposed to the backlight side () and has a backlight crystal face exposed to the backlight side (). At least one region of the backlight side () has an average flatness index Rbeing ≤75.

A/M/X crystalline material, photovoltaic device, and preparation methods thereof

This application provides a separator, an electrical apparatus containing such separator, and preparation methods thereof. The separator includes a coating layer containing an organic-inorganic hybrid composite compound and provides improved performance in a number of aspects, and the organic-inorganic hybrid composite compound is formed by periodically assembling, along at least one spatial direction, basic units expressed by formula I, L(MC)·A. This application further provides a battery and an electrical device containing such separator, preparation methods thereof, and an organic-inorganic hybrid composite compound for improving performance of a separator.

Embodiments of this application provide a perovskite solar cell, a preparation method thereof, and an electric device. The perovskite solar cell includes: a back plate; a transparent substrate, where a sealed cavity is formed between the transparent substrate and the back plate; and a perovskite solar cell device, where the perovskite solar cell device is located in the sealed cavity; where the sealed cavity contains ammonia gas having a volume fraction of 10%-100% and residual inert gas. The 10%-100% ammonia gas can improve chemical stability of a perovskite material, thus improving thermal stability of the perovskite solar cell device, and further improving efficiency and service life of the perovskite solar cell.

Perovskite solar cell, preparation method thereof, and electric device

Provided are a perovskite betavoltaic-photovoltaic battery. The battery includes a first electrode, a first charge transport layer, a perovskite layer, a second charge transport layer, and a second electrode in sequence. The first electrode is a transparent electrode. The first charge transport layer is an electron transport layer and the second charge transport layer is a hole transport layer, or, the first charge transport layer is a hole transport layer and the second charge transport layer is an electron transport layer. The perovskite layer is doped with a fluorescent substance. At least one of the first electrode, the first charge transport layer, the second charge transport layer, or the second electrode is radioactive. When the first electrode and/or the second electrode is radioactive, the first electrode and/or the second electrode is an irradiated electrode formed by compounding a radioactive source and a conductor material.

Perovskite betavoltaic-photovoltaic battery

The present application provides an organic-inorganic hybrid complex which can be used in a coating of a separator for a secondary battery, wherein the organic-inorganic hybrid complex is formed from basic units represented by formula (I) being periodically assembled in at least one spatial direction: [L][MC].A(I), wherein a defect percentage expressed in i/x*100% is 1% to 30%. The present application further provides a coating composition comprising the organic-inorganic hybrid complex, a coating formed from the coating composition, a separator comprising the coating for a secondary battery, a secondary battery comprising the separator, a battery module, a battery pack and a device. By applying the organic-inorganic hybrid complex of the present application in a coating, the electrolyte infiltration of a separator for a secondary battery is improved while increasing the electrolyte retention rate, thereby improving the rate capability and cycling life of the secondary battery.

Organic-inorganic hybrid complex and coating composition comprising same, separator, secondary battery, battery module, battery pack and power consuming device

The present application provides a positive electrode active material which may be in a particulate form and comprise a compound represented by Formula 1:NaAM1[M2(CN)]HO  Formula 1

Positive electrode active material, sodium-ion secondary battery comprising the same and electrical apparatus

A hard carbon. A total quantity of adsorbed nitrogen under a relative pressure P/Pof nitrogen between 10and 0.035 is Vcm(STP)/g and a total quantity of adsorbed nitrogen under a relative pressure P/Po of nitrogen between 0.035 and 1 is Vcm(STP)/g in a nitrogen adsorption isotherm determined at a temperature of 77 K for the hard carbon. The hard carbon satisfies: V/V≤0.20 and 20≤V≤150, where P represents an actual pressure of nitrogen, and Prepresents a saturated vapor pressure of nitrogen at a temperature of 77 K.

Hard carbon, method for preparing same, secondary battery comprising same, and electrical apparatus comprising same

An artificial graphite satisfies: PD/PD≤1.35, where PDis a compacted density of the artificial graphite measured under a pressure of 5 ton, and PDis a compacted density of the artificial graphite measured under a pressure of 0.5 ton.

Artificial graphite, preparation method thereof, secondary battery containing the same and power consuming device

This application provides a separator, an electrical apparatus containing such separator, and preparation methods thereof. The separator includes a coating layer containing an organic-inorganic hybrid composite compound and provides improved performance in a number of aspects, and the organic-inorganic hybrid composite compound is formed by periodically assembling, along at least one spatial direction, basic units expressed by formula I, L(MC)·A. This application further provides a battery and electrical device containing such separator, preparation methods thereof, organic-inorganic hybrid composite compound for improving performance of a separator.

Separator including coating layer including organic-inorganic hybrid composite compound battery including the same, and method of preparing the same

An organic-inorganic hybrid porous material. The organic-inorganic hybrid porous material contains a doping element A are provided. In some embodiments, the element A is one or more selected from: Li, Na, K, Rb, Cs, Sr, Zn, Mg, Ca, or any combination thereof. An external specific surface area of the organic-inorganic hybrid porous material is 1 to 100 m/g. A ratio of the external specific surface area to a total specific surface area of the organic-inorganic hybrid porous material is 0.7 to 0.9.

Organic-inorganic hybrid porous material and preparation method thereof, separator, electrochemical device, and electrical device

The present application provides a method for preparing a perovskite film, and a related perovskite film, solar cell and solar cell device thereof. The preparation method may include the steps of (1) providing a target material comprising the following elements: lead, a halogen, and one or more alkali metals; (2) sputtering using the target material in step (1), where a process gas is a noble gas, optionally, argon, so as to obtain a film; (3) subjecting the film obtained in step (2) to a chemical bath treatment, wherein the chemical bath is a solution of AX, A is selected from one or more of formamidine or methylamine, and X is a halogen; and (4) sputtering on the film obtained in step (3) using a tin metal, where a process gas comprises a noble gas, optionally, a mixture of argon and a halogen gas, so as to obtain the perovskite film.

Preparation method for perovskite film, and related perovskite film and solar cell

A perovskite solar battery, including a transparent conductive glass substrate, a hole transport layer, a perovskite light-absorbing layer, an electron transport layer, and an electrode are described. The hole transport layer is a nickel oxide hole transport layer. Simple-substance nickel exists on a contact surface of the hole transport layer in contact with the perovskite light-absorbing layer. On the contact surface of the hole transport layer in contact with the perovskite light-absorbing layer, a ratio between simple-substance nickel and trivalent nickel is 85:15 to 99:1, optionally 90:10 to 99:1, and further optionally 95:5 to 99:1. This application further provides a method for preparing a perovskite solar battery.

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Ningde, China

Chuying Ouyang