▎ 摘　　要

NOVELTY - High-stability lithium battery cathode material comprises 20-30 pts. wt. modified porous graphene, 20-30 pts. wt. modified graphite, 20-30 pts. wt. mesophase carbon microsphere, 20-30 pts. wt. lithium titanate, 5-10 pts. wt. conductive agent and 5-10 pts. wt. binder. USE - The high-stability cathode material is used for preparing lithium battery (claimed). ADVANTAGE - The modified porous graphene has a unique and stable three-dimensional structure. The mesophase carbon microsphere can effectively control the aggravation of the negative polarization, finally obtaining the high-capacity-density and long-life high-stability lithium battery cathode material, and the high-capacity-density and long-life high-stability lithium battery cathode material can still maintain good capacitance under the conditions of high temperature and low temperature, and the capacity retention rate R after circulating for 2000 times at high temperature is higher than 80%. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) application of the high-stability lithium battery cathode material in preparing lithium battery comprising cathode current collector and cathode material coated on the current collector; and (2) preparation of cathode material comprising sequentially weighing modified porous graphene, modified graphite, mesophase carbon microsphere, lithium titanate, conductive agent and binder, mixing uniformly, adding into a ball mill, ball milling, drying, calcining at 850-900 degrees C, cooling, crushing, and sieving.