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The core-shell Li_4Ti_5O_(12) @ polyaniline composites(LP) have been synthesized via an in situ synthesis with different mole ratios(25:1, 50:1 and 100:1, aniline:LTO). As an anode material of lithium-ion batteries,the LP-2 electrodes(50:1) exhibit a high initial reversible capacity of 205 mAh g~(-1)with an initial coulombic efficiency of 97.6% at 0.1 C. Even at a high current density of 10 C, the reversible capacity of the LP-2 electrodes still remains at 102 mAh g~(-1). Moreover, the LP-2 electrodes retain an impressive high capacity of 161 mAh g~(-1)after 100 cycles at 1 C, with 0.11% capacity fading per cycle. The promising electrochemical performance may be attributed to the significantly decreasing charge-transfer impedance of the LP composite and reductive polarity difference between the cathode and the electrolyte.
The core-shell Li_4Ti_5O_ (12) @ polyaniline composites (LP) have been synthesized via an in situ synthesis with different mole ratios (25: 1, 50: 1 and 100: 1, aniline: LTO) -ion batteries, the LP-2 electrodes (50: 1) exhibit a high initial reversible capacity of 205 mAh g -1 with an initial coulombic efficiency of 97.6% at 0.1 C. Even at a high current density of 10 C , the reversible capacity of the LP-2 electrodes still remains at 102 mAh g -1. Furthermore, the LP-2 electrodes retain an impressive high capacity of 161 mAh g -1 after 100 cycles at 1 C, with 0.11% capacity fading per cycle. The promising electrochemical performance may be attributed to the substantially decreasing charge-transfer impedance of the LP composite and reductive polarity difference between the cathode and the electrolyte.