• 专利标题:   Method of producing microporous lithium foil for lithium ion battery used in e.g. aerospace field, involves coating lithium liquid mixed with inert gas on cooled substrate by coating, and continuously moving substrate to obtain continuous lithium foil strip.
  • 专利号:   CN114054306-A
  • 发明人:   LIU H, WU C, MU H, CHEN Q, CHENG Z, QI D
  • 专利权人:   TIANJIN ZHONGNENG LITHIUM IND CO LTD
  • 国际专利分类:   B05C011/10, B05C013/02, B05C005/02, B05C009/14, B05D001/26, H01M004/04, H01M004/1395
  • 专利详细信息:   CN114054306-A 18 Feb 2022 B05C-009/14 202257 Chinese
  • 申请详细信息:   CN114054306-A CN10766021 03 Aug 2020
  • 优先权号:   CN10766021

▎ 摘  要

NOVELTY - The method involves providing (S1) lithium liquid and inert gas, mixing (S2) the inert gas into the lithium solution, heating (S3) and keeping the temperature of the mixed lithium liquid. A substrate to be coated is provided (S4) and cooled (S5). The lithium liquid mixed with inert gas is coated (S6) on the cooled substrate, and quickly solidifying into foil material, where a portion of the inert air in the lithium fluid forms micro-pores, and at the same time, coating, continuously moving the substrate to obtain (S7) continuous micropores lithium foil strip. USE - Method for producing microporous lithium foil for lithium ion battery used in aerospace, computer, mobile communication device, robot, and electric automobile, etc. ADVANTAGE - The microporous lithium foil is uniform in thickness and possess a lower lithium loading amount under the condition of the same thickness, which helps to precisely control the amount of the lithium replenishment and helps the electrolyte to rapidly permeate to dissolve the lithium metal. By heating the lithium liquid reduces the surface tension of lithium liquid, the coating process is more stable and uniform, can obtain the thickness of the metal lithium strip with uniform thickness in the form of micro-pores. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a microporous lithium foil production device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic flow chart illustrating a method for producing a microporous lithium foil. (Drawing includes non-English language text) Step of providing lithium liquid and inert gas (S1) Step of mixing inert gas into lithium solution (S2) Step of heating temperature of mixed lithium liquid (S3) Step of providing substrate to be coated (S4) Step of cooling substrate (S5) Step of coating lithium liquid (S6) Step of obtaining continuous micropores lithium foil strip (S7)