Plant Oil–Inspired 3D Flower‐Like Zn₃V₃O₈ Nanospheres Coupled with N‐Doped Carbon as Anode Material for Li‐/Na‐Ion Batteries

Abstract

Plant oil–inspired 3D flower‐like Zn3V3O8 nanospheres coupled with nitrogen doped (N‐doped) carbon synthesized via the microemulsion/calcination strategy are used as anodes for lithium‐/sodium‐ion batteries (LIBs/SIBs). The synergistic interaction between the unique 3D flower‐like structure and the existence of N‐doped carbon can provide enough space to buffer volume expansion during the Li+/Na+ intake/outlet process and enhance conductivity, respectively. Thus, the material delivers progressive electrochemical performance. Specifically, the Zn3V3O8 nanospheres exhibit a reversible specific capacity of 1140.6 mAh g−1 after 200 cycles for LIBs and 113.0 mAh g−1 after 400 cycles for SIBs at a current density of 200 mA g−1. Furthermore, the Zn3V3O8 nanospheres electrode owns rate capability for LIBs such as 933.8, 847.9, 780.8, and 664.1 mAh g−1 at elevated current densities of 200, 400, 800, and 1600 mAh g−1, respectively. In addition, it delivers reversible capacities of 207.5, 119.2, 74.1, and 42.7 mAh g−1 at 100, 200, 500, 1000, and 2000 mA g−1 for SIBs, respectively.

Nitrogen-doped carbon encapsulated zinc vanadate polyhedron engineered from a metal–organic framework as a stable anode for alkali ion batteries

“…In summary, a self-assembly strategy followed by in situ pyrolysis was developed to fabricate Zn 2 VO 4 nanoparticles encapsulated in the an N-doped nanocarbon network, which were derived from a V/Zn-MOF precursor. Compared to previous higher-costly strategies (such as solvothermal method) to synthesize bimetallic vanadate material [30,33], we utilized a convenient ZIF-8 self-assembly route, placing V species into suitable cavities to form zinc vanadate polyhedron. The adopted N-doped carbon encapsulated Zn 2 VO 4 polyhedron, which display a uniform size distribution of approximately 100-300 nm and a larger specific surface area (351 m 2 g −1 ), tends to improve the diffusion kinetics, favors enhanced electrochemical behaviour.…”

“…Additionally, zinc vanadate infused electrochemical activities are due to the variable architecture and valence states of vanadium for the insertion/disinsertion of sodiumions [31][32][33][34]. For example, Liu's group synthesized the m-ZnV 2 O 6 nanobelt which exhibits an excellent discharge capacity of 247 mAh g -1 at the 100th cycle for SIBs [31].…”

Review: Application of Bionic-Structured Materials in Solid-State Electrolytes for High-Performance Lithium Metal Batteries

“…Although flower-like structures in SSEs are uncommon, they have been extensively investigated in various other applications, including the evolution of hydrogen, oxygen, and dyes, supercapacitors, and more. ,− Researchers also should pay more attention to the nature of various 3D flowers, their changes, and the interconnected morphologies of multilayer sheets.…”

A Durable Na0.56V2O5 Nanobelt Cathode Material Assisted by Hybrid Cationic Electrolyte for High‐Performance Aqueous Zinc‐Ion Batteries

“…With the development of electric vehicles and portable electronics, there has been a growing requirement for an efficient, stable and safe power supply system . Among various energy storage devices, lithium‐ion batteries (LIBs), characterized by the excellent energy density and long‐life utilization, have been widely applied in electric vehicles and intelligent equipment . However, the exposed safety issues in recent years and limited lithium reserves hinder the further application of LIBs in burgeoning energy devices .…”