Chinese Academy of Sciences

Beijing University of Chemical Tehcnology

Jijin Yang

Guoliang Li

Zhongming Du

Jianguo Wu

Jin Hao

Runqing Zhou

Wenjie Dong

Wen Liu

Yuan Yuan

Xiaoming Sun

Ting Gao

Xiwen Lu

Minggui Xu

Disclosed are a lithium aluminum hydrotalcite-based solid electrolyte film, a preparation method and use thereof, and a lithium battery including the same. The lithium aluminum hydrotalcite-based solid electrolyte film includes: a solid electrolyte film substrate formed by an organic polymer, and a lithium salt and a lithium aluminum hydrotalcite uniformly dispersed in the solid electrolyte film substrate, wherein the lithium aluminum hydrotalcite has a content of 50 wt % to 80 wt %, based on a total mass of the solid electrolyte film substrate after removal of the lithium salt; and the organic polymer includes one or more selected from the group consisting of polyethylene glycol diacrylate, polyethylene oxide, polypropylene carbonate, and polyvinylidene fluoride-hexafluoropropylene copolymer.

Lithium-aluminum hydrotalcite-based solid electrolyte film working at room temperature, preparation method thereof, and lithium battery including same

A method, device, and system for evaluating geological and engineering sweet spots in an unconventional reservoir based on dual-energy computed tomography (CT) comprises acquiring and preprocessing a high-energy CT image and a low-energy CT image of a core from a core region, acquiring and preprocessing a high-energy CT image and a low-energy CT image of a core from a core reference sample, calculating a density and an effective atomic number of each pixel in the core region of a target reservoir, acquiring a geological sweet spot index and an engineering sweet spot index, acquiring evaluation results of geological and engineering sweet spots at different depths of the core region in the target reservoir, and matching the evaluation results to acquire reservoir types corresponding to the different depths of the core region in the target reservoir. The present disclosure achieves accurate and efficient reservoir evaluation and classification.

Method for evaluating geological and engineering sweet spots in unconventional reservoirs based on dual-energy computed tomography (CT)

An ion beam cutting calibration system includes a sample cutting table, a coarse calibration device, a microscopic observation device, and a flip table. The flip table includes a flip plate, which is configured to drive the sample cutting table to swing in a vertical plane. The swing axis of the flip plate is collinear with the side edge of the top surface of the ion beam shielding plate close to the sample. Through the coordinated operation of the flip table, the microscopic observation device, the sample cutting table, and the coarse calibration device, the ion beam cutting calibration system avoids the problem that when the position relationship between the sample and the shielding plate is observed from multiple angles during calibration loading, the sample and the shielding plate are likely to be moved out of the field of vision of the microscope and out of focus.

Ion beam cutting calibration system and method

A multifunctional experimental system for in-situ simulation of a gas hydrate includes a computed tomography (CT) scanning device, a reactor, and a pipeline system. The reactor includes: a reactor upper end cover, a reactor lower end cover, a reactor housing and a clamp holder. A first pipeline channel is formed at a top, an upper groove is formed at a bottom, and a first upper joint is arranged in the upper groove. A second pipeline channel is formed at a side, a lower groove is formed at a top, and a first lower joint is arranged in the lower groove; where two ends of the reactor housing are respectively fixed to the reactor upper end cover and the reactor lower end cover. A top end of the clamp holder is provided with a second upper joint, a bottom end of the clamp holder is provided with a second lower joint.

Multifunctional experimental system for in-situ simulation of gas hydrate

A 3D imaging system and method for a nanostructure is provided. The 3D imaging system includes a master control center, a vacuum chamber, an electron gun, an imaging signal detector, a broad ion beam source device, and a laser rangefinder component. A sample loading device is arranged inside the vacuum chamber. A radial source of the broad ion beam source device is arranged in parallel with an etched surface of a sample. The laser rangefinder component includes a first laser rangefinder configured to measure a distance from a top surface of an ion beam shielding plate and a second laser rangefinder configured to measure a distance from a non-etched area of the sample, the first laser rangefinder and the second laser rangefinder are arranged side by side, and a laser traveling direction is perpendicular to a traveling direction of the broad ion beam source device.

Three-dimensional (3D) imaging system and method for nanostructure

A method for identifying a pore and a fracture based on a two-dimensional (2D) scan image of a core includes: scanning a core to acquire an initial 2D image of the core; filtering the initial 2D image of the core to acquire a first 2D image of the core; segmenting the first 2D image of the core to acquire a second 2D image of the core; extracting center coordinates of all pixel points in each void space to acquire a centroid of the void space, and establishing a pore-fracture identification function of the void space; identifying the void space as a fracture if a value of the pore-fracture identification function is greater than a preset characterization value; and identifying the void space as a pore if the value of the pore-fracture identification function is not greater than the preset characterization value.

Method and system for identifying pore and fracture based on two-dimensional (2D) scan image of core

The present application belongs to the technical field of oil and gas exploration and development, and specifically provides a rock stratification identification method and apparatus, a device and a storage medium. The method includes: acquiring multiple sets of CT slice images of a rock, where each set of the CT slice images include a first CT slice image and a second CT slice image, the first CT slice image and the second CT slice image are acquired by scanning a same depth section of the rock, scanning energy corresponding to the first CT slice image is different form scanning energy corresponding to the second CT slice image; determining multiple dual energy indices of the rock according to the multiple sets of CT slice images; and determining a rock stratification according to the multiple dual energy indices, which can identify stratification of a large-scale rock by using CT.

Rock stratification identification method and apparatus, device and storage medium

A classified characterization method for connectivity of organic matter (OM)-hosted pores in shale includes: scanning a shale sample according to a preset imaging area through a scanning electron microscope to acquire a 2D image of the shale sample; extracting pore parameters of each OM in the 2D image by Avizo software; acquiring a class number of OM sets according to the pore parameters; performing 3D reconstruction on each class of OM sets through a focused ion beam-helium ion microscope to acquire reconstructed 3D models of the OM; acquiring a pore connectivity parameter by the Avizo software; and acquiring an evaluation index for overall connectivity of the OM-hosted pores in the shale based on the pore connectivity parameter. The classified characterization method is based on the morphologically quantitative classification of the OM-hosted pores, and can realize the 3D characterization of connectivity of pores below 10 nm.

Classified characterization method for connectivity of organic matter (OM)-hosted pores in shale

An intelligent system and method for preparing cryo-electron microscopy samples is provided. The system includes a control center, an ultra-low temperature liquid tank, a sample holding mechanism configured to limit a position of a to-be-processed sample, a sample processing mechanism configured to cut or polish the sample, a position adjustment mechanism, and a sample transfer mechanism configured to transfer a processed sample. In a working process, the control center controls the ultra-low temperature liquid tank to provide a preset temperature environment based on a target sample type, activates the position adjustment mechanism based on position information of the sample holding mechanism in the first chamber to drive the sample processing mechanism to perform processing according to a preset processing route, and activates, based on information about the processed sample to be transferred into the second chamber, the sample transfer mechanism to transfer the processed sample in a preset environment.

Intelligent system and method for preparing cryo-electron microscopy samples and electronic device

The present disclosure belongs to the field of petroleum exploration and development and, in particular, relates to a system and a method for analyzing while-drilling rock fragments in oil and gas field. The system includes a sample preparation mold and a sample scanning apparatus; the mold is configured to quickly batch prepare fragments into scanning ready samples; the apparatus is portable and configured for batch scanning and analyzing the samples, and having the capabilities of anti-vibration, temperature control, dust prevention, and adaptability to a harsh well site environment; the method includes a scanning step where surface images, elements and mineral types of rock can be rapidly quantitatively analyzed, and lithologies thereof can be identified; the method also includes the analysis step in which rock's elastic parameters and target zone of the vertical well are determined, and geosteering and design of staged fracturing of horizontal well can be provided.

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Beijing, China

Jijin Yang