The TiO2-bronze/nitrogen-doped graphene nanocomposites have the potential for fast-charging and have high stability, showing potential as an anode material in advanced power batteries for next-generation applications.

A novel microstructure of anode materials for lithium-ion batteries with ternary components, comprising tin (Sn), rice husk-derived silica (SiO 2 ), and bronze-titanium dioxide (TiO 2 (B)), has been developed. The goal of this research is to utilize the nanocomposite design of rice husk-derived SiO 2 and Sn nanoparticles self-assembled on TiO 2 (B) nanorods, Sn–SiO 2 @TiO 2 (B), through simple chemical route methods. Following that, the microstructure and electrochemical performance of as-prepared products were investigated. The major patterns of the X-ray diffraction technique can be precisely indexed as monoclinic TiO 2 (B). The patterns of SiO 2 and Sn were found to be low in intensity since the particles were amorphous and in the nanoscale range, respectively. Small spherical particles, Sn and SiO 2 , attached to TiO 2 (B) nanorods were discovered. Therefore, the influence mechanism of Sn–SiO 2 @TiO 2 (B) fabrication was proposed. The Sn–SiO 2 @TiO 2 (B) anode material performed exceptionally well in terms of electrochemical and battery performance. The as-prepared electrode demonstrated outstanding stability over 500 cycles, with a high discharge capacity of ∼150 mA h g –1 at a fast-charging current of 5000 mA g –1 and a low internal resistance of around 250.0 Ω. The synthesized Sn–SiO 2 @TiO 2 (B) nanocomposites have a distinct structure, the potential for fast charging, safety in use, and good stability, indicating their use as promising and effective anode materials in better power batteries for the next-generation applications.

By combining rice husk-derived nano-silica and reduced graphene oxide and then polymerizing PANI by in situ polymerization, we created polyaniline-coated rice husk-derived nano-silica@reduced graphene oxide composites with excellent electrochemical performance.

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Novel anode materials for lithium-ion batteries, nanocomposites of Sn (or SnO₂) and SiO₂ with graphene-based sheets (GO, rGO and NrGO), were synthesized by a facile and low-cost technique. The capacity of all composites was relatively high as compared to traditional graphite.

Popped rice carbons (PC) were derived from popped rice by using a facile and low-cost technique. PC was then activated by different kinds of activating agents, such as potassium hydroxide (KOH), zinc chloride (ZnCl2), iron (III) chloride (FeCl3), and magnesium (Mg), in order to increase the number of pores and specific surface area. The phase formation of porous activated carbon (PAC) products after the activation process suggested that all samples showed mainly graphitic, amorphous carbon, or nanocrystalline graphitic carbon. Microstructure observations showed the interconnected macropore in all samples. Moreover, additional micropores and mesopores were also found in all PAC products. The PAC, which was activated by KOH (PAC-KOH), possessed the largest surface area and pore volume. This contributed to excellent electrochemical performance, as evidenced by the highest capacity value (383 mAh g−1 for 150 cycles at a current density of 100 mA g−1). In addition, the preparation used in this work was very simple and cost-effective, as compared to the graphite preparation. Experimental results demonstrated that the PAC architectures from natural popped rice, which were activated by an optimal agent, are promising materials for use as anodes in LIBs.

Nanostructured tin(tin oxide)/bronze-phase titanium dioxide (Sn(SnO2)/TiO2(B)) ultrafast-charging and good cycling stability materials have been intensively studied as potential electrode materials to improve battery performance. The Sn(SnO2)/TiO2(B) nanocomposites have been synthesized using a simple hydrothermal method and subsequent chemical technique. The unique phase hybridization of metallic Sn and SnO2 on the TiO2(B) nanorod surface enhances Li-ion storage performance throughout this nanocomposite design. Interestingly, the Sn(SnO2)/TiO2(B) electrode can operate effectively at high current density while sustaining an excellent rate capacity. Furthermore, this nanocomposite electrode also delivers a highly reversible specific capacity of 500 mAh g–1 at 100 mA g–1 and manifests a high Coulombic efficiency of around 98% after 50 cycles. Also, the Sn(SnO2)/TiO2(B) nanocomposite possessed excellent capacities of 188 mAh g–1 (at the rate of 10.0 A g–1) and 117 mAh g–1 (at the rate of 20.0 A g–1) after long-term cycling for 3000 cycles, indicating good cycling stability and ultrafast-charging characteristic. At ambient temperature, this electrode has a low transfer resistance of around 6.30 Ω and a high lithium-ion diffusion coefficient of roughly 5.05 × 10–13 cm2 s–1. This prepared electrode reveals the composite architecture, which contains the open continuous pseudocapacitive channels along its axis, allowing for fast lithium-ion diffusion and storage as well as effective mechanical support for the TiO2(B) nanorod, alleviating stress generated during discharge–charge cycling. Also, the generated stable SEI layer of this material can prevent the pulverization and separation of the Sn and SnO2 nanoparticles.Its superior properties of having a distinct structure, high storage capability, potential for ultrafast charging, safety in use, and good cycling stability indicate they can be promising and effective anode materials in better power batteries for next-generation applications.

This work aimed to design a facile preparation of sandwich-liked Ge nanoparticles/nitrogen-doped reduced graphene oxide (Ge/NrGO) nanocomposites used as anode in lithium-ion batteries through the chemical solution route. The advanced electron microscopy, STEM-HAADF and STEM-EDS mapping, evidenced that the individual Ge particles with sizes ranging from 5 to 20 nm were distributed and wrapped as sandwiches within the multi-layered NrGO sheets, which were mainly composed of the pyridinic-N form (4.8%wt.). The battery performances of the 20Ge/NrGO nanocomposite anode exhibit a high reversible capacity (700 mAh g−1) and retained its outstanding stability during long-term cycling. The internal resistance (28.0 Ω) was also decreased after cycling, according to EIS measurement. The sandwiched structure of Ge-based nanocomposite with the interconnected NrGO layers discussed in this article possessed the high-performance LIBs with great potential application in energy storage technologies.