Abstract
The facile phosphoric acid (H3PO4) surface modification of layered lithium transition metal oxide cathode materials has been proven to enhance the reversible capacity and rate capability of these materials. Here, we have investigated the effect of this treatment on two NMC cathode materials, Li(Ni1/3Mn1/3Co1/3)O2 (NMC333) and Li(Ni0.5Mn0.3Co0.2)O2 (NMC532). The thin nanolayer of Li3PO4 coating was formed after subjecting the NMCs to H3PO4 solution followed by heating at 500 °C for 5 h under air. The Li3PO4 coating formed is found to be very potent in enhancing the specific capacity of the first discharge as well as the rate capability and capacity retention in the subsequent charge/discharge cycles for both NMCs. The obtained results demonstrate that the H3PO4 treatment is a simple and general method to improve the electrochemical properties of NMCs with different compositions and have the potential for industrial applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
