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：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.