Bimetallic Oxide Nanosheets from Nickel–Vanadium Layered Double Hydroxide as an Efficient Cathode for Rechargeable Nickel–Zinc Batteries

Abstract

Nickel–zinc batteries as safe and economic energy storage devices suffer from lack of high electrochemical performance of cathode materials. Herein, a new cathode material for rechargeable Ni/Zn batteries is introduced based on various compositions of mixed metal oxide (MMO) through a calcination process of nickel–vanadium layered double hydroxide at different temperatures. The results demonstrated that the prepared sample at 500 °C presents the best electrochemical properties such as a good electrochemical discharge capacity (278.4 mAh g–1 at 0.5 A g–1), good cycle life (capacity retention of 74% after 1000 cycles at 5 A g–1), and excellent rate capability (177 mAh g–1 at 5 A g–1). These improvements can be related to the designed compositions of bimetallic oxides, NiO and Ni3V2O8, the amorphous phase, good morphology, and high structural stability, which lead to enhanced OH– guest ion diffusion in the structure and an increase in the active surface area for electrochemical reactions. It is expected that the introduced novel MMO compound is a promising new effective cathode electrode in rechargeable Ni/Zn batteries for many types of applications toward reliable and safe energy storage devices.

Recent Developments in Titanium Carbide (Ti3C2)-Based Layered Double Hydroxide (LDH) Nanocomposites for Energy Storage and Conversion Applications: A Minireview and Perspectives

“…The size and thickness of the particle of LDH materials affect their surface area that is necessary because it exposes more active sites because the higher surface area will result in higher catalytic activity . The decrease in the size or thickness of LDH crystals to a nanometer level results in reduction in the coordination number of metallic cations in the crystal of LDH that leads to variation in electronic properties and bandgap energies.…”

Selenium-doped mixed metal oxide nanoparticles decorated on g-C3N4 and MXene sheets as promising bifunctional oxygen electrocatalysts for rechargeable Zn–air batteries

“…Moreover, the oxygen spectrum includes three peaks located at 529.2, 530.7 and 532.46 eV, corresponding to the oxygen lattice of the cobalt iron mixed metal oxide and adsorbed water. 28 The FT-IR spectra of the CF compound are presented in Fig. S5.…”

“…On the other hand, the crystallization water, carbonate and hydroxyl anions are removed during the calcination process, resulting in the formation of integrated metal oxides. 28…”

A short review on transition metal chalcogenides/carbon nanocomposites for energy storage

“…The next-generation rechargeable batteries, including multivalent ion batteries, metal-air batteries, and lithium-sulfur batteries, are attracted great attention in recent years due to their amazing advantages such as low price, natural abundance of components, shallow risk of safety, and non-toxic materials [48]. However, they include some challenges that are necessary to solve for commercial applications.…”