Designing of Carbon Cloth supported 3D Porous Nickel Oxide Composite as High-Performance Flexible Anode for Sodium and Lithium-Ion Batteries

Two-dimensional (2D) plate-like porous NiO–Ni 2 O 3 nanostructure (NS) arrays are successfully deposited over the carbon fiber cloth (CF) via a hydrothermal method, followed by calcination. Hybridization of 2D plate-like porous NiO–Ni 2 O 3 NS with CF created 3D porous CF@NiO–Ni 2 O 3 hybrid composite (HC) (binder-free) which was investigated as an anode material for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). The powder NiO–Ni 2 O 3 NS (with binder) anode delivered discharge capacities of 15.56 and 21.6 mA h g −1 for SIBs and LIBs, respectively over 200 cycles at 100 mA g −1 . After the hybridization with CF (i.e., 3D porous CF@NiO–Ni 2 O 3 HC), its reversible capacities were further improved, exhibiting 594 and 1076 mA h g −1 for SIBs and LIBs, respectively at 100 mA g −1 over 200 cycles. The LIB coin-type full cell showed an excellent lithium storage performance, and the pouch-type full cell LIB was successfully operated, indicating its flexibility in flat, bending, rolling, and folding configurations. Benefiting from the porous 2D NS of binder-free NiO–Ni 2 O 3 as well as the high conductivity of CF, the assembled battery revealed excellent electrochemical performance in terms of high reversible capacity and good rate capability. The excellent electrochemical characteristics of the 3D porous CF@NiO–Ni 2 O 3 HC electrode make it a promising anode material for high-performance SIBs and LIBs.