Effect of micro-patterning on electrochemical performances of Ni-rich LiNi_(0.91)Go_(0.06)Mn_(0.03)O_2 cathode for superior of LIBs

摘要

Micro-patterned Ni-rich LiNi0.91Co0.06Mn0.03O2 cathode is successfully fabricated at little expense for superior electrochemical performances. The micro-patterned Ni-rich LiNi0.91Co0.06Mn0.03O2 cathode delivers high discharge capacity of 211.5 mAh g(-1), extraordinary rate performance of 81.3% even at high C-rate of 4.0 C, stable cycle performance of 77.3% after 80 cycles. It is attributed to that the micro-patterning enhance the lithium ion and electron diffusion via expansion of electrochemically active sites with maintaining structural stability. Consequently, it can be concluded that micro-patterning shows great promise in excellent electrochemical performances for next-generation lithium ion batteries. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.