Educational background：Postgraduate student
Degree：Bachelor
Status：At school
Research direction：NCA
Introduce：In the current power battery is still in the stage of rapid technological development, from ternary NCM111 to NCM811 has undergone a rapid development process, with the nickel content increment, the battery energy density has also been improved accordingly. The Ksp of Ni(OH)2(s) and Co(OH)2(s) is 10-14.7 and 10-14.8, while the Ksp of Al(OH)3(s) is 10-33. The precipitation rate of Al(OH)3(s) is much higher than that of Ni(OH)2(s) and Co(OH)2(s), causing Ni, The rapid precipitation of Al(OH)3(s) generates a large number of fine nuclei, resulting in the inability of the crystals to grow and the inability to obtain the required micron-sized particles of precursors. NCA sintering is technically difficult to prepare and requires pure oxygen conditions for complete conversion. Due to the thermodynamic instability of Ni3+, the sintering temperature of NCA cannot be too low or too high, too low for Ni2+ to oxidise to Ni3+ and too high for Ni3+ to decompose to Ni2+. The solutions to the above problems are mainly explored.
Enrollment date：2021-09-01