Structural and electrochemical properties of mesoporous FeVO ₄ as a negative electrode for lithium‐ion battery

Abstract

Summary The approach to accomplishing long cycle solidity usually depends on the electrode materials in lithium‐ion batteries (LIBs). Herein, mesoporous FeVO4 (MFVO) nanostructures (NSs) were prepared via a simple hydrothermal method and post‐calcination using different concentrations of ethylenediaminetetraacetic acid (EDTA) chelating agent. The morphology, microstructure, and mesoporous nature of the as‐prepared samples were characterized by scanning electron microscope, transmission electron microscope, and Brunauer‐Emmett‐Teller analyses, respectively. The as‐obtained MFVO NSs were examined as a negative material for LIBs. The enhanced MFVO‐2 (0.2 g of EDTA) electrode provides an initial charge/discharge capacity of 2880 mA h g−1/2707 mA h g−1 at 0.1 A g−1. Even after 100 cycles, it displays a superior specific discharge capacity of 906 mA h g−1. Furthermore, the MFVO‐2 electrode exhibits a high‐rate performance with a steady reversible capacity. As a result, the porosity and density of nanorod‐like morphologies are significant factors in their electrochemical performances. The outstanding electrochemical effects of MFVO NSs may be suggested as a prospective anode material for enhanced LIBs.

Oxygenated copper vanadium selenide composite nanostructures as a cathode material for zinc-ion batteries with high stability up to 10 000 cycles

“…4(b), cathodic peaks were observed at 0.6 and 1.22 V and anodic peaks appeared at 0.73, 1.16, and 1.35 V. The observed anodic and cathodic peaks at 1.35 and 1.22 V, respectively are related to the conversion reaction between Se 0 to Se. 2–54 In previous reports on the ZnSe cathode, the same kind of redox peaks are also observed. 54 Other redox peaks are related to the redox reaction between V 4+ and V 5+ .…”

“…14,[19][20][21][22][23][24][25][26][27][28][29] Among them, V-based materials have attracted increasing interest for LIBs and AZiBs owing to their fascinating properties such as multiple oxidation states and high abundance. 21,[30][31][32][33] Like other materials, V-based cathodes also suffer from poor charge transfer kinetics and unstable crystal structure during the charge/discharge process, leading to rapid capacity decay and inferior rate performance. To solve this problem, researchers have devoted considerable attention to improving the Zn-ion storage performance of V-based cathodes by introducing the morphology of different nanostructures, structural modification, and cation/molecular pillaring.…”

Carbon‐Shielded Selenium‐Rich Trimetallic Selenides as Advanced Electrode Material for Durable Li‐Ion Batteries and Supercapacitors

“…The loss of CE (63% and 72%) in the initial cycle is mostly correlated to the growth of SEI layers on the surface of the electrode through electrolyte decomposition. [ 34–35 ]…”

“…The loss of CE (63% and 72%) in the initial cycle is mostly correlated to the growth of SEI layers on the surface of the electrode through electrolyte decomposition. [34][35] The cycling performance and stability of both the anodes were studied at 0.1 A g −1 and the results are displayed in Figure 4c,d. Clearly, the core-shell Cu 2 NiSnSe 4 @C NPs anode (Figure 4d) attained higher cycling performance and cycling solidity than that of the Cu 2 NiSnSe 4 NPs anode (Figure 4c).…”

Preparation and characterization of acid‐treated multiwalled carbon nanotubes interlinked nickel vanadate microcomposites for lithium‐ion batteries

“…Rechargeable lithium-ion batteries (LIBs) have received much interest in a wide range of energy storage devices, thanks to the rising prevalence of electronic/electric al things, including cellphones, electric vehicles, and notepads. 1,2 One of the challenges with LIBs is designing alternative anode materials with better capacity and stability to replace commercially used graphite anodes owing to the less theoretical capacity (372 mA h g À1 ). 3 Compared with metal oxides (MOs), mixed MOs (MMOs) are attracting great research concern as a negative material in LIBs due to their outstanding features as followed.…”