Lithium-Pretreated Hard Carbon as High-Performance Sodium-Ion Battery Anodes Academic Article uri icon

abstract

  • AbstractHard carbon (HC) is the stateoftheart anode material for sodiumion batteries (SIBs). However, its performance has been plagued by the limited initial Coulombic efficiency (ICE) and mediocre rate performance. Here, experimental and theoretical studies are combined to demonstrate the application of lithiumpretreated HC (LPHC) as highperformance anode materials for SIBs by manipulating the solid electrolyte interphase in tetraglyme (TEGDME)based electrolyte. The LPHC in TEGDME can 1) deliver > 92% ICE and 220 mAh g1 specific capacity, twice of the capacity (100 mAh g1) in carbonate electrolyte; 2) achieve > 85% capacity retention over 1000 cycles at 1000 mA g1 current density (4 C rate, 1 C = 250 mA g1) with a specific capacity of 150 mAh g1, 15 times of the capacity (10 mAh g1) in carbonate. The full cell of Na3V2(PO4)3LPHC in TEGDME demonstrated close to theoretical specific capacity of 98 mAh g1 based on Na3V2(PO4)3 cathode, 2.5 times of the value (40 mAh g1) with nontreated HC. This work provides new perception on the anode development for SIBs.

published proceedings

  • ADVANCED ENERGY MATERIALS

author list (cited authors)

  • Xiao, B., Soto, F. A., Gu, M., Han, K. S., Song, J., Wang, H., ... Li, X.

citation count

  • 88

complete list of authors

  • Xiao, Biwei||Soto, Fernando A||Gu, Meng||Han, Kee Sung||Song, Junhua||Wang, Hui||Engelhard, Mark H||Murugesan, Vijayakumar||Mueller, Karl T||Reed, David||Sprenkle, Vincent L||Balbuena, Perla B||Li, Xiaolin

publication date

  • August 2018

publisher