Superior electrochemical performance of NiS/Ni obtained via electrochemical corrosion

• The fabrication of NiS/Ni via an electrochemical corrosion method.
• The NiS shows flower-like morphology that consists of flocky particles.
• The NiS/Ni exhibits superior electrochemical performance as anode for Li-ion batteries.

NiS is successfully grown on Ni foam via an in situ electrochemical corrosion method. It is proposed that H2O2 can act as cathodic depolarizer that promotes the corrosion of Ni, which is crucial for the formation of NiS. The NiS shows flower-like morphology with mean size about 2 µm, consisting of flocky particles with size range from 500 nm to 1 µm. The as prepared NiS/Ni can be directly used as binder free anode for Li-ion batteries, which shows excellent electrochemical performance. It delivers initial discharge and charge capacities are 836 and 668 mA h g−1 at a specific current of 150 mA g−1, respectively. After 70 cycles, the charge capacity can maintain of 589 mA h g−1.

NiS/Ni anode is prepared by electrochemical corrosion method, which shows superior electrochemical performance as binder free anode for Li-ion batteries.Figure optionsDownload as PowerPoint slide