Electrodeposition Carbon with Improved Performance As Anode Material for Lithium-Ion Batteries (LIBs)

Abstract

Electrolytic reduction of molten carbonates (Li, K-Na) has been suggested as a practical approach to improve the performance of lithium-ion batteries as anode material. However, to achieve the desired carbon phase is still a challenge, and this area needs more exploration. Herein, novel carbonaceous were synthesized by using molten carbonates as an exciting new method of producing carbons for battery applications. The electrochemical properties Galvanostatic charge-discharge, cycle ability, rate performance and cyclic voltammetry were enhanced by using the electrodeposited anode as a comparison to the pure commercialized artificial graphite. As a consequence, the modified carbon anode material exhibits superior initial discharge capacity 334 mAh g-1 at 0.1C with coulombic efficiency of 95.70% and 255 mAh g-1 at 1C with a capacity retention (coulombic efficiency) of 85.8% (100%) after 100 cycles in the potential window of 0.01-2V (vs Li/Li+). In comparison pure artificial graphite exhibit only 316 mAh g-1 at 0.1C, corresponding to lower first coulombic efficiency of 89.26% and 195 mAh g-1 at 1C with capacity retention (coulombic efficiency) of 83.8% (94%) after 100 cycles. The great improvement in the de-/lithiation kinetic can be accredited to the enhancement in apparent lithium ion diffusion coefficient.