Facile approach to prepare porous CaSnO₃ nanotubes via a single spinneret electrospinning technique as anodes for lithium ion batteries.
CaSnO₃ nanotubes are successfully prepared by a single spinneret electrospinning technique. The characterized results indicate that the well-crystallized one-dimensional (1D) CaSnO₃ nanostructures consist of about 10 nm nanocrystals, which interconnect to form nanofibers, nanotubes, and ruptured nanobelts after calcination. The diameter and wall thickness of CaSnO₃ nanotubes are about 180 and 40 nm, respectively. It is demonstrated that CaSnO₃ nanofiber, nanotubes, and ruptured nanobelts can be obtained by adjusting the calcination temperature in the range of 600-800 °C. The effect of calcination temperature on the morphologies of electrospun 1D CaSnO₃ nanostructures and the formation mechanism leading to 1D CaSnO₃ nanostructures are investigated. As anodes for lithium ion batteries, CaSnO₃ nanotubes exhibit superior electrochemical performance and deliver 1168 mAh g⁻¹ of initial discharge capacity and 565 mAh g⁻¹ of discharge capacity up to the 50th cycle, which is ascribed to the hollow interior structure of 1D CaSnO₃ nanotubes. Such porous nanotubular structure provides both buffer spaces for volume change during charging/discharging and rapid lithium ion transport, resulting in excellent electrochemical performance.
School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore.
Linlin
L
Li
Shengjie
S
Peng
Jin
J
Wang
Yan Ling
YL
Cheah
Peifen
P
Teh
Yahwen
Y
Ko
Chuiling
C
Wong
Madhavi
M
Srinivasan
D002118:Calcium / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D011211:Electric Power Supplies; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D012399:Rotation; D017971:Tin Compounds / Q000737:chemistry*
D007477:Ions; D017971:Tin Compounds; D008094:Lithium; C045358:stannic oxide; D002118:Calcium