An encapsulation of nitrogen and sulphur dual-doped carbon over Li[Ni0.8Co0.1Mn0.1]O2 for lithium-ion battery applications

Abstract

Lithium ion batteries (LIBs) are considered as the competitive candidate for driving electric vehicles (EVs) and hybrid electric vehicles (HEVs). Among various cathode materials, nickel-rich layered Li[NixCoyMnz]O2 is particularly interesting due to its superior electrochemical performance. The Ni-rich layered cathode electrode material is regarded as an auspicious competitor for next-generation rechargeable LIBs due to the dominance of high theoretical capacity although it requires considerable improvements to achieve commercial success. Herein, we report a simple and one-step process to prepare nitrogen and sulphur dual-doped carbon (NSC) and subsequently coat over Ni-rich layered particles, NSC@Li[Ni0.8Co0.1Mn0.1]O2 (NSC@NCM811). The resulting 0.3 wt% of NSC@NCM811 delivers exceptional cycling stability than the pristine and other coated samples. At the end of 100 cycles, 0.3 wt% of NSC@NCM811 delivers the discharge capacity of 177.89 mAh g−1 at a current rate of 0.1C. With the advantage of exceptional electrochemical properties, 0.3 wt% of NSC@NCM811 is a promising alternative working electrode material for (LIBs).