• 专利标题:   Preparing lithium battery electrode with good conductivity comprises Obtaining raw materials for electrode preparation, acidifying carbon nanotubes, crushing positive/negative electrode active material, graphene and modified carbon nanotubes into positive/negative electrode powder, sieving powder.
  • 专利号:   CN116072873-A
  • 发明人:   JIA M, YU Z
  • 专利权人:   LONGDIAN TECHNOLOGY GUANGDONG CO LTD
  • 国际专利分类:   H01M010/0525, H01M004/04, H01M004/13, H01M004/139, H01M004/62
  • 专利详细信息:   CN116072873-A 05 May 2023 H01M-004/62 202350 Chinese
  • 申请详细信息:   CN116072873-A CN10151420 22 Feb 2023
  • 优先权号:   CN10151420

▎ 摘  要

NOVELTY - Preparing lithium battery electrode with good conductivity comprises: a. Obtaining raw materials for electrode preparation, which include positive/negative active materials, graphene, carbon nanotubes; b. acidifying the carbon nanotubes so that the surface of the carbon nanotubes has carboxyl group; c. crushing the positive/negative electrode active material, graphene and modified carbon nanotubes into positive/negative electrode powder; d. sieving the powder with a sieve, and obtaining a uniformly mixed positive/negative electrode powder after sieving; e. obtaining a casing with an opening, and placing a diaphragm bag inside the casing; f. packing the uniformly mixed powder into a diaphragm bag placed in the casing; g. inserting the conductive sheet into the powder as the inner lug, and sealing the upper opening of the diaphragm bag; and h. connecting the inner lug to the pole of upper cover of housing, insulating the pole from the housing, and sealing the upper cover. USE - Method for preparing lithium battery electrode with good conductivity. ADVANTAGE - The method lithium battery electrode has good conductivity. DETAILED DESCRIPTION - Preparing lithium battery electrode with good conductivity comprises: a. Obtaining raw materials for electrode preparation, which include positive/negative active materials, graphene, carbon nanotubes; b. acidifying the carbon nanotubes so that the surface of the carbon nanotubes has carboxyl group, and the acidification uses a mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of (2-3):1; c. crushing the positive/negative electrode active material, graphene and the modified carbon nanotubes into positive/negative electrode powder; d. sieving the powder with a sieve, and obtaining a uniformly mixed positive/negative electrode powder after sieving; e. obtaining a casing with an opening, and placing a diaphragm bag inside the casing; f. packing the uniformly mixed powder into a diaphragm bag placed in the casing; g. inserting the conductive sheet into the powder as the inner lug, and sealing the upper opening of the diaphragm bag; and h. connecting the inner lug to the pole of the upper cover of the housing, insulating the pole from the housing, and sealing the upper cover. An INDEPENDENT CLAIM is included for a lithium battery electrode with good conductivity.