Enhanced Electrochemical performance at high temperature of Cobalt Oxide/Reduced Graphene Oxide Nanocomposites and its application in lithium-ion batteries

Abstract

We report a microwave irradiation method for the preparation of reduced graphene oxide (RGO) based Co3O4 nanocomposites as anodes for lithium-ion (li-ion) batteries. The Co3O4/RGO nanocomposites displayed good electrochemical behavior as anodic materials for li-ion batteries when compared to pure Co3O4. The Co3O4/RGO nanocomposites with low RGO content resulted in stable electrochemical performance with 100% coulombic efficiency at a high current density of 500 mA/g for 50 cycles. The enhanced capacity of the Co3O4/RGO nanocomposites is due to the incorporation of RGO, which resulted in a four times larger surface area than that of Co3O4. This increased surface area could facilitate the absorption of more lithium ions, resulting in excellent electrochemical performance. Interestingly, the novelty of this work is that the designed li-ion batteries showed stable electrochemical performance even at a high temperature of 100 °C, which might be useful for rechargeable battery applications in a wide temperature range.

Structure, Properties and Applications of Two‐Dimensional Hexagonal Boron Nitride

“…This composite anode exhibits excellent electrochemical performance and minimal resistance at 150 °C. [ 353 ] Apart from enhancing thermal stability, h‐BN also plays an important role in Li‐ion batteries by increasing the electrochemical window, altering the electrolyte oxidative potential, and suppressing the dendrite formation. [ 353 ] Overall, the addition of h‐BN as one of the Li‐ion battery components stabilizes the high‐temperature operation and opens new avenues including multifarious applications in defense, aerospace, and oil and gas industries.…”

Quantitative Analysis of the Oxidation State of Cobalt Oxides by Resonant Photoemission Spectroscopy

“…Cobalt oxide-based nanomaterials have recently attracted great attention due to their potential applications in the fields of heterogeneous catalysis, − energy storage, − electrochemical water splitting, − and electrocatalysis . The catalytic activity of these materials is often associated with the redox conversion of cobalt cations between different oxidation states. , At the frontier of fundamental research, the quantitative assessment of the catalytically, electrochemically, and solar-driven charge transfer processes in cobalt oxide nanomaterials and cobalt-based complexes is essential for the knowledge-based engineering of advanced materials.…”

Synthesis and Modification of Boron Nitride Nanomaterials for Electrochemical Energy Storage: From Theory to Application

“…[ 116 ] In contrast, batteries with BN‐based separators or solid electrolytes are expected to operate at higher temperatures (120−150 °C) owing to the excellent thermal stability of BN. [ 19,114,117 ] This not only greatly expands the working limit environment of the power supply but also improves the power density, because the conductivity of protons and ions in electrochemical systems is proportional to the temperature. [ 17 ] Moreover, using BN as a cooling layer of power supply systems is a simple, direct, and economical strategy. 3)High mechanical strength.…”

“…Therefore, BN‐based nanomaterials can be beneficial for the thermal management of Li/Na batteries. [ 110–114 ]…”