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：US20200231504A1

公开(公告)日：2020-07-23

申请号：US16749105

申请日：2020-01-22

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： PING NING ,  YU LIU ,  BIN LI ,  YINGJIE ZHANG ,  PENG DONG ,  JIANG QI

IPC: C04B28/14 ,  C04B18/04 ,  C04B24/26 ,  C04B24/18 ,  C04B24/12 ,  C04B14/08 ,  C04B14/04

Abstract: The present invention discloses a method for synergistic stabilization/solidification of red mud and phosphogypsum. The method includes: grinding and mixing red mud and phosphogypsum, adding deionized water, uniformly stirring the mixture to prepare slurry, adjusting a pH value of the slurry to 7.5-8.5, adding a conditioner and conducting stirring, adding a stabilizer and an anti-permeability agent, uniformly stirring the mixture to obtain a gel product, and conducting solidification for 12-24 h to solidify the red mud and phosphogypsum, to obtain a red mud-phosphogypsum solidified material. In the present invention, the neutralization reaction between acidic ions in phosphogypsum and basic ions in red mud is adopted to reduce a pH value of the red mud and a transfer capability of pollutants in waste residues; synergistic solidification processing is conducted on two types of solid wastes: red mud produced in the aluminum smelting industry and phosphogypsum produced in the phosphorus chemical industry.