Preparation and Characterization of Negative Electrode Materials for Lithium Batteries in New Energy Vehicles
In order to improve the electrochemical performance of lithium battery electrode materials for new energy vehicles,LCO-x,LTO-x,and Gra-x(x=CNTs)composite electrode materials were prepared by spra-ying.The phase composition,thermogravimetric curves,microstructure,and conductivity of different compos-ite electrode materials were compared and analyzed.The results showed that the three composite electrode ma-terials did not change their respective phase composition after the addition of CNTs,indicating that there was no reaction between the components and the formation of new compounds after the addition of CNTs.The ther-mal weight loss of LCO-CNTs and LTO-CNTs composite electrode materials remains within 5％within the 900℃ range,indicating good resistance to high-temperature oxidation.The square resistance of LCO-CNTs and LTO-CNTs composite materials prepared by spraying method is significantly smaller than that of LCO-A1 and LTO-Al electrodes.This is mainly because the spatial structure of LTO-CNTs and Gra-CNTs composite elec-trode is sandwich structure,which helps to improve electron transfer ability and conductivity.
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