公开(公告)号：US20250079522A1

公开(公告)日：2025-03-06

申请号：US18400980

申请日：2023-12-29

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： FENG LIANG ,  XIECHENG YANG ,  YINGJIE ZHOU ,  DA ZHANG ,  BIN YANG

IPC: H01M10/0568 ,  H01M4/38 ,  H01M10/0565 ,  H01M10/0569 ,  H01M4/02

Abstract: A high-concentration high-entropy electrolyte and its preparation method and battery were disclosing in the present disclosure. A high-concentration high-entropy electrolyte, including a solvent, a first solute salt and added salts, the first solute salt is a solute salt with high solubility in the solvent, while the added salts are composed of at least three solute salts, the molar concentration range of the solute salts in the high-concentration high-entropy electrolyte is between 20 M-60 M, the molar concentration of the first solute salt is greater than 20 M, and the molar concentration of the first solute salt is greater than 50% of the molar concentration of the high-concentration high-entropy electrolyte. The sodium-carbon dioxide batteries assembled with high-concentration high-entropy electrolytes not only have higher power density, but also have excellent discharge specific capacity and rate performance.

公开(公告)号：US20220185672A1

公开(公告)日：2022-06-16

申请号：US17548606

申请日：2021-12-13

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： FENG LIANG ,  ZHIPENG XIE ,  ZHENGGANG TANG ,  XIECHENG YANG ,  DA ZHANG ,  MINJIE HOU ,  YAO KANG ,  BIN YANG ,  YONGNIAN DAI

IPC: C01B32/18 ,  H01M10/0525 ,  H01M10/54 ,  H01M4/583

Abstract: The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.

公开(公告)号：US20240380005A1

公开(公告)日：2024-11-14

申请号：US18597194

申请日：2024-03-06

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： FENG LIANG ,  DONGRONG YANG ,  DA ZHANG ,  BAOQIANG XU ,  BIN YANG

IPC: H01M10/0565 ,  H01M10/054 ,  H01M50/403 ,  H01M50/414 ,  H01M50/451

Abstract: An asymmetric sodium-based solid-state composite electrolyte includes a first solid-state composite electrolyte layer and a second composite electrolyte layer obtained by laminated coating method. Both the two solid-state composite electrolyte layers include a polymer matrix, an inorganic filler, a sodium salt and a plasticizer, the difference is the electron conductive agent added with the mass ratio ranges from 1 wt. %˜10 wt. % into the second solid-state composite electrolyte layer. In a battery assembled with the asymmetric sodium-based solid-state composite electrolyte, the first solid-state composite electrolyte layer is contiguous with a positive electrode, and the second solid-state composite electrolyte layer is disposed between the first solid-state composite electrolyte layer and a negative electrode.

公开(公告)号：US20230286805A1

公开(公告)日：2023-09-14

申请号：US18304316

申请日：2023-04-20

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： FENG LIANG ,  ZHIPENG XIE ,  DA ZHANG

IPC: C01B32/18 ,  B01J37/08 ,  B01J21/18 ,  B01J35/00 ,  B01J23/42

CPC classification number: C01B32/18 ,  B01J21/18 ,  B01J23/42 ,  B01J35/0013 ,  B01J37/08

Abstract: A method includes the following steps: a first step: the material containing heteroatom and graphite powder are mixed for a preset time by grinding, and the molar ratio of heteroatom to carbon atom is 1%-10%, then the heteroatom precursors are obtained; a second contact step: the heteroatom precursor is filled into a graphite rod with holes and compacted, then the graphite rod is dried for a preset time to obtain a plasma anode and using a DC arc plasma device to prepare the graphite anode into heteroatom-doped CNHs; a third contact step: the heteroatom-doped CNHs are dispersed in a reducing solution, a platinum salt is added to stir evenly, the reduction reaction is carried out by heating and stirring, and after centrifugation, washing and drying, a catalyst with platinum loading is obtained.

公开(公告)号：US20240332495A1

公开(公告)日：2024-10-03

申请号：US18346970

申请日：2023-07-05

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： FENG LIANG ,  PENG DONG ,  DA ZHANG

IPC: H01M4/04 ,  H01M4/62

CPC classification number: H01M4/0459 ,  H01M4/625 ,  H01M2004/021 ,  H01M2004/028

Abstract: A method for treating battery positive electrode material includes: cold plasma treatment of at least part of the battery positive electrode material with carbon layer on the surface to be treated to have active particles doped in the carbon layer, where the doping amount is not less than 50 ppm (Part per million). At least part of the surface of the positive electrode material of the battery contains a carbon layer and at least part of the surface has a rod-like shape. The carbon layer is a carbon layer doped with active particles after cold plasma treatment, and a high-sodium ion conductance NaF layer is formed on the surface of the positive electrode material.

公开(公告)号：US20240222697A1

公开(公告)日：2024-07-04

申请号：US18537953

申请日：2023-12-13

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  JIANGSU FENGCHI CARBON BASED NEW MATERIAL RESEARCH INSTITUTE CO., LTD

Inventor： FENG LIANG ,  MINJIE HOU ,  DA ZHANG ,  TAO ZHANG ,  SUNZU XIANG ,  WENLONG JIANG ,  BAOQIANG XU ,  BIN YANG

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/0068

Abstract: A method for preparing a sodium super ionic conductor solid electrolyte by low-dimensional crystallization belongs to a field of energy materials. The method is based on the theory of negative ion coordination polyhedron growth unit, and uses low-temperature plasma as a protective gas of a spray drying equipment. While evaporating the solvent in a sodium super ionic conductor solid electrolyte precursor slurry, plasma active groups modify the particle surface of the sodium super ionic conductor solid electrolyte precursor particles in-situ. A free space dimension of crystal growth in the crystallization process is reduced, and directional growth of crystals in the solid phase sintering process is induced. Secondly, the dispersion stability of the sodium super ionic conductor solid electrolyte precursor particles is improved. Compared with the traditional high-temperature solid-state sintering process, the method has the advantages of fast crystallization speed, high crystal purity and integrity, good compactness, and uniform particles.