Method for preparing nickel-rich hydroxide precursor and nickel-rich anode composite material using continuous Taylor flow reactor exhibiting high specific capacity and high cycle stability

• Main Authors: YANG, CHUNNG, JEYAKUMAR, JULIYA, MUSUVADHI BABULAL, LAKSHMIPRIYA, TRUONG, THI BE TA, WU, YI-SHIUAN
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention utilizes a novel continuous Taylor flow reactor (TFR) to prepare an anode composite material of nickel-rich lithium-nickel-cobalt-manganese oxide and lithium-nickel-cobalt-manganese-aluminum oxide for a lithium ion secondary battery with high specific capacity and high cycle stability. The secondary particle of the anode composite has an elliptical shape, and the primary particle has a nanoscale petal-like structure on a plane of crystal plane family {010}. In addition, the in-situ synthesis of lithium molybdate (Li2MoO4) is also used to coat the nickel-rich lithium-nickel-cobalt-manganese oxide anode composite material, so that the anode composite can exhibit lower Li+/Ni2+ cation mixing degree, higher material structural stability and improved electrochemical performance of batteries at high voltages. Accordingly, the electrochemical performance of the battery composed of the nickel-rich lithium-nickel-cobalt-manganese oxide anode composite material of the present invention is obviousl