Nickel and cobalt effect on properties of MWCNT-based anode for Li-ion batteries

The article considers the effect of multiwalled carbon nanotubes (MWCNTs) modification with nickel and cobalt in different amounts on their electrochemical properties. For this purpose, several composites were synthesized by simple low-temperature method, characterized by XRD and thermal analysis and investigated as anodes for lithium-ion batteries. The composites with 40% of nickel and 40% of cobalt display a stable capacity of 550 mAh/g and 700 mAh/g, respectively, at a current density of 200 mA/g for the 60 cycles. The exhibited capacity is higher than the theoretical capacity of carbon. A comparison of nickel and cobalt composites shows that Co/CNT composite has better electrochemical characteristics: higher capacity, more flat discharge curve and resistant to texture changes structure.