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Chemistry Letters, Vol.49, No.3, 337-340, 2020
High Rate Performance Li4Ti5O12/N-doped Carbon/Stainless Steel Mesh Flexible Electrodes Prepared by Electrostatic Spray Deposition for Lithium-ion Capacitors
In this work, lithium -Inmate (Li4Ti5O12)/N-doped carbon/ stainless steel mesh (LTO/N-C/SSM) flexible electrodes for Li-ion capacitors were successfully prepared without binder via a facile method of electrostatic spray deposition (ESD) using hexadecyl trimethyl ammonium bromide (CTAB) as carbon source. The performances of LTO/N-C/SSM electrodes were investigated using half-cells with Li foil as counter electrode. The LTO/N-C/SSM flexible electrode exhibits an excellent rate capability and cycling stability. At a current rate of 50 C, the specific capacity of the LTO/N-C/SSM electrode reaches 94 mA h g(-1). After 1000 cycles at 3 C, the discharge specific capacity of the LTO/N-C/SSM electrode remains 83%. The energy density and power density of the LICs full-cell based on the LTO/N-C/SSM electrode as anode and commercial activated carbon (AC) as cathode are 125 Wh kg(-1) and 3.5 kW kg(-1), respectively.