Abstract
To improve the rate capability of lithium-rich layered cathode material Li[Li0.2Ni0.17Mn0.56Co0.07]O2 a facile method aimed at micro-structural rearrangement was proposed. Through the combination of excess lithium and chemical activation post-treatment, the resulting material showed well ordered bulk and surface structures. The capacity retention for the modified material improved significantly (compared with untreated sample) at high discharge current densities. Moreover, the unique electrochemical behavior of the modified material reveals the existence of the chemically activated Li2MnO3 component within the composite.
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