A Pair of NiCo₂O₄ and V₂O₅ Nanowires Directly Grown on Carbon Fabric for Highly Bendable Lithium‐Ion Batteries

Abstract

Mechanically bendable and flexible functionalities are urgently required for next‐generation battery systems that will be included in soft and wearable electronics, active sportswear, and origami‐based deployable space structures. However, it is very difficult to synthesize anode and cathode electrodes that have high energy density and structural reliability under large bending deformation. Here, vanadium oxide (V2O5) and nickel cobalt oxide (NiCo2O4) nanowire‐carbon fabric electrodes for highly flexible and bendable lithium ion batteries are reported. The vanadium oxide and nickel cobalt oxide nanowires were directly grown on plasma‐treated carbon fabric and were used as cathode and anode electrodes in a full cell lithium ion battery. Most importantly, a pre‐lithiation process was added to the nickel cobalt oxide nanowire anode to facilitate the construction of a full cell using symmetrically‐architectured nanowire‐carbon fabric electrodes. The highly bendable full cell based on poly(ethylene oxide) polymer electrolyte and room temperature ionic liquid shows high energy density of 364.2 Wh kg−1 at power density of 240 W kg−1, without significant performance degradation even under large bending deformations. These results show that vanadium oxide and lithiated nickel cobalt oxide nanowire‐carbon fabrics are a good combination for binder‐free electrodes in highly flexible lithium‐ion batteries.

Mesocrystallizing Nanograins for Enhanced Li+ Storage

“…73-1702), respectively. [29][30][31] This indicates that the pure phase NiCo 2 O 4 is synthesized. To analyze the composition and valence state of nanorods more accurately, XPS was carried out with results shown in Figure S2, Supporting Information.…”

Sandwich Structure of 3D Porous Carbon and Water‐Pillared V2O5 Nanosheets for Superior Zinc‐Ion Storage Properties

“…The survey‐scan XPS spectrum of the PC/V 2 O 5 ⋅ n H 2 O is shown in Figure 2e. The O 1s, V 2p and C 1s is located at 529.5, 517.4 and 282.9 eV, [47] respectively, which further demonstrates the existence of these three elements in the PC/V 2 O 5 ⋅ n H 2 O composite. The XPS spectra of C and O elements are presented in Figure S2.…”

Review on carbonaceous materials and metal composites in deformable electrodes for flexible lithium-ion batteries

“…A pre-lithiation approach has been applied to resolve the initial capacity fading of NiCo 2 O 4 based electrodes, thus lithiated NiCo 2 O 4 NWs/CC hybrid anodes for exible LIBs are fabricated through a hydrothermal approach followed by calcination at 300 C in the air for 3 h, then applying pre-lithiation. 121 Therefore, the pre-lithiated anode maintained a discharge capacity of 1026 mA h g À1 in the 10 th cycle at a current density of 100 mA g À1 . In addition, a exible full cell was assembled using this anode with V 2 O 5 /CC cathode, the cell exhibited an energy density of 364.2 W h kg À1 at a power density of 240 W h kg À1 with no obvious capacity fading even aer 200 folding cycles.…”