Centrifugally Spun SnO2 Microfibers Composed of Interconnected Nanoparticles as the Anode in Sodium-Ion Batteries


Lu Y., Yanilmaz M. , Chen C., Dirican M., Ge Y., Zhu J., ...Daha Fazla

CHEMELECTROCHEM, cilt.2, ss.1947-1956, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 2 Konu: 12
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1002/celc.201500367
  • Dergi Adı: CHEMELECTROCHEM
  • Sayfa Sayıları: ss.1947-1956

Özet

SnO2 microfibers were synthesized by using centrifugal spinning technology and were evaluated as the anode in sodium-ion batteries. The as-prepared SnO2 microfibers are composed of interconnected nanoparticles with small interparticle openings. The 1-demensional fibrous morphology, fine particle size, and open pore structure result in reduced electrochemical impedance and enhanced electrochemical performance. The highest capacity achieved is 567mAhg(-1) at 20mAg(-1). At a much higher current density of 640mAg(-1), the microfiber electrode still retains a high capacity of 158mAhg(-1) after 50 cycles. The SnO2 microfibers also demonstrate good rate performance in a current range of 20-640mAg(-1). The results demonstrate that SnO2 microfibers are a potential anode material candidate for sodium-ion batteries and that centrifugal spinning offers a feasible solution for the large-scale production of fibrous electrode materials.