Lithium Vanadium Oxide/Graphene Composite as a Promising Anode for Lithium-Ion Batteries

Abstract

Lithium vanadium oxide (Li3VO4, LVO) is a promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity (394 mAh g−1) and safe working potential (0.5–1.0 V vs. Li+/Li). However, its electrical conductivity is low which leads to poor electrochemical performance. Graphene (GN) shows excellent electrical conductivity and high specific surface area, holding great promise in improving the electrochemical performance of electrode materials for LIBs. In this paper, LVO was prepared by different methods. SEM results showed the obtained LVO by sol-gel method possesses uniform nanoparticle morphology. Next, LVO/GN composite was synthesized by sol-gel method. The flexible GN could improve the distribution of LVO, forming a high conductive network. Thus, the LVO/GN composite showed outstanding cycling performance and rate performance. The LVO/GN composite can provide a high initial capacity of 350.2 mAh g−1 at 0.5 C. After 200 cycles, the capacity of LVO/GN composite remains 86.8%. When the current density increased from 0.2 C to 2 C, the capacity of LVO/GN composite only reduced from 360.4 mAh g−1 to 250.4 mAh g−1, demonstrating an excellent performance rate.

Progress towards sustainable energy storage: A concise review

“…Nonetheless, the composite of graphene with lithium-vanadium-oxide prepared by sol-gel method, has been presented as a high-performing anode electrode for lithium-ion batteries. 112 The following points must be pertinently considered in order to develop polymer-graphene and graphene-based electrochemical energy storage devices:…”

“…Lithium‐vanadium‐oxide anode electrode for lithium‐ion battery is characterized by poor electrical conductivity. Nonetheless, the composite of graphene with lithium‐vanadium‐oxide prepared by sol–gel method, has been presented as a high‐performing anode electrode for lithium‐ion batteries 112 . The following points must be pertinently considered in order to develop polymer‐graphene and graphene‐based electrochemical energy storage devices: Synthesis methods must be suitable for proper control of morphology, thermal, electronic, and mechanical properties. Conductive polymers and metal oxides are beneficial for electrical conductivity enhancement and electrochemical stability (charge and discharge) of the nanocomposite electrodes. The electrically insulating but ionically conducting interface (solid electrolyte interface), which passivates the negative electrode is a necessary phenomenon in lithium‐ion batteries.…”

A Brief Review of MoO3 and MoO3-Based Materials and Recent Technological Applications in Gas Sensors, Lithium-Ion Batteries, Adsorption, and Photocatalysis

“…Lithium-ion batteries (LIBs) have become one of the most important and practical energy storage systems for power sources due to their power density, higher energy, longer lifespan, high operating voltage, excellent rechargeability, stable cycle performance, no memory effects, considerable environmental friendliness, and beneficial safety [24,[62][63][64][65][66][67]. The LIBs have been researched for use in a variety of electronic devices, including laptops and cell phones, as well as electric and hybrid cars [24,62,63].…”

“…safety [24,[62][63][64][65][66][67]. The LIBs have been researched for use in a variety of electronic dev including laptops and cell phones, as well as electric and hybrid cars [24,62,63].…”

The application of plasma technology for the preparation of supercapacitor electrode materials

“…Graphene, with its distinctive two-dimensional nanostructure, exhibits exceptionally high surface area and excellent electrical conductivity, positioning it as one of the ideal materials for supercapacitor electrodes. 18–21 Most pseudocapacitor electrode materials are transition metal oxides, 22 such as RuO 2 , NiO, MnO 2 , ZnO, and Fe 2 O 3 , which possess pseudocapacitive properties and can store energy through reversible redox chemical reactions 23–26 and have much larger charge storage capacity compared to carbon materials. This enhances the energy density of supercapacitors.…”