• 专利标题:   Preparation of lithium ion negative electrode material using tin-graphene composite material involves grinding tin, graphene, graphite and carbon black, performing graphitization, extruding, roasting, carbonizing, heating, and pressing.
  • 专利号:   CN111215633-A
  • 发明人:   WEI J, ZHANG J, MIN J, ZHANG P, PANG Z, WU J, LIU W, JI Y, XU B, LV X, LEI T, HUO Y, ZHANG Y, CHEN Y
  • 专利权人:   DATONG XINCHENG NEW MATERIAL CO LTD
  • 国际专利分类:   B22F001/00, B22F001/02, B22F003/20, B22F003/24, B22F003/26, B22F009/04, C01B032/205, H01M010/0525, H01M004/38, H01M004/587, H01M004/62
  • 专利详细信息:   CN111215633-A 02 Jun 2020 B22F-009/04 202050 Pages: 5 Chinese
  • 申请详细信息:   CN111215633-A CN10035662 14 Jan 2020
  • 优先权号:   CN10035662

▎ 摘  要

NOVELTY - Preparation of lithium ion negative electrode material using tin-graphene composite material comprises grinding tin, graphene, graphite and carbon black, performing graphitization at 2500-2800 degrees C for 192-240 hours, placing in dipping tank at 250-650 degrees C and 7-12 kPa for 8-15 hours, extruding, setting mold temperature at 180-220 degrees C, heating, extruding, carbonizing under nitrogen or argon gas at 120-370 degrees C for 100 hours, heating at 370-570 degrees C for 57 hours, heating at 570-870 degrees C for 75 hours, heating at 870-1200 degrees C for 110 hours, roasting for 24 hours, cooling, pressing for 2 hours, soaking, roasting under nitrogen or argon gas atmosphere, baking at 1200 degrees C for 48 hours, secondary baking for 450-550 hours, performing secondary graphitization at 2800-3200 degrees C for 450-500 hours, and purifying. USE - Method for preparing lithium ion negative electrode material using tin-graphene composite material.