The invention belongs to the technical field of
lithium ion batteries, and particularly relates to an
electrode material with thermosensitive properties, and a preparation method thereof. The
electrode material comprises a core formed by a
lithium metal oxide, and a shell formed by a
thiophene derivative, wherein the weight of the
thiophene derivative accounts for 0.1-8% of the total weight of the
electrode material, and the
Curie temperature of the
thiophene derivative is 90-130 DEG C. Compared with the prior art, the
electrode material with the core-shell structure, which is formed in a manner that the
lithium metal oxide is coated with the thiophene derivative, has the advantages that the thermosensitive properties are excellent, that is, each active particle has the
positive temperature coefficient characteristic; and when the
internal temperature of a battery adopting the
electrode material rises up to the
Curie temperature of the material, the resistance of the
electrode material can be sharply increased, so that a conductive network among the electrode material particles is blocked, the
electron transfer speed is greatly reduced, the battery can be effectively prevented from further temperature rises, and the battery safety is further improved.