Embedding α-MnSe nanodots in nitrogen-doped electrospinning carbon nanofibers to enhanced storage properties of lithium-ion batteries

Abstract

Long-cycle-life and high-capacity nitrogen-doped carbon-coated α-MnSe nanofibers (α-MnSe/N-CNFs) electrodes were prepared by using an electrospinning process. The one-dimensional structural of α-MnSe/N-CNFs possesses great stability and play a key role in obtaining a long-cycle life for lithium-ion batteries. With nitrogen doping, improved pseudocapacitive behavior and conductivity were observed and the reversible capacity of the was increased to 956.3 mA h g−1 at 0.2 A g−1 after 200 cycles. The discharge capacity of α-MnSe/N-CNFs after 500 cycles reached 613.0 mA h g−1 even at a high current density of 1 A g−1. The excellent electrochemical performance of α-MnSe/N-CNFs holds great promise as a candidate anode material for high-performance lithium-ion batteries.