Electrospun MnxCo0.5−xSn0.5O2 and SnO2 porous nanofibers and nanoparticles as anode materials for lithium-ion battery

The specific capacity (781 mAh g −1 ) of SnO 2 as anode materials for lithium-ion batteries (LIBs) is much higher than that of commercial graphite materials (372 mAh g −1 ), which attracts great attention from researchers. In this paper, a series of Mn x Co 0.5− x Sn 0.5 O 2 ( x  = 0.00, 0.15, 0.25, 0.35, 0.50) and SnO 2 porous nanofibers and nanoparticles are prepared through a single-spinneret electrospinning technique followed by a calcination process. The electrochemical properties of porous nanofibers and nanoparticles have been measured and discussed, and the results show that porous nanofibers have better performance when doped with manganese and cobalt components. With the increase of manganese contents, the electrochemical capability of the batteries is improved. As a demonstration, the Mn 0.50 Co 0.00 Sn 0.5 O 2 ( x  = 0.50) porous nanofibers present the first discharge capacity of 1347.3 mAh g −1 , and after 100 cycles, Mn 0.50 Co 0.00 Sn 0.5 O 2 possesses the higher discharge capacity of 131.6 mAh g −1 when compared with the other materials. Mn x Co 0.5− x Sn 0.5 O 2 ( x  = 0.5) porous nanofibers were prepared through an electrospinning technique with a calcination process, which present the first discharge capacity of 1347.3 mAh g −1 at a current density of 100 mAh g −1 .