Abstract
Three-dimensional (3D) porous NiCo2N@C composite was deposited on nickel foam substrate through the electrostatic spray deposition (ESD) technique followed by a post-annealing process under ammonia atmosphere. The prepared reticular-structured NiCo2N@C film used as binder-free anode for lithium-ion batteries (LIBs) can exhibit excellent electrochemical performance. It delivers high initial discharge capacity of 1215.8 mAh g-1 at a current density of 1 A g-1 and can maintain 1630.9 mAh g-1 after 400 cycles. The electrode also shows a superior rate capability with 955.4 mAh g-1 at 10 A g-1 current density.
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