Researchers have developed a new method to synthesize Ni(H2O)2Ni[CN]4·xH2O using a coprecipitation technique. The process involves dissolving nickel chloride, sodium citrate, and potassium tetracyanonickelate in deionized water, stirring, and aging to form a light-blue precipitate, which is then further treated to obtain the final product, Ni-DMF.
The fabrication of solid-state electrolyte (SSE) membranes involves solution-casting of PVDF-HFP and LiFSI, followed by mixing with Ni-DMF powder and casting onto a substrate. This results in the formation of LPE@Ni-DMF membranes for battery applications. Additionally, a composite material comprising sulfur and polyacrylonitrile is prepared for cathode slurry in lithium-sulfur batteries.
Electrochemical measurements are conducted on the SSE membranes to determine ionic conductivities, rate constants, and lithium ion transference number. Advanced techniques such as cyclic voltammetry and in-situ X-ray scattering are used to analyze the performance and behavior of the battery components.
Materials characterization techniques such as SEM, TEM, XRD, and XPS are employed to study the morphology, composition, and structural properties of the synthesized materials. Molecular dynamics simulations are performed to investigate the ionic conduction mechanisms of the electrolytes, providing valuable insights into their performance.
Overall, the novel materials preparation methods and comprehensive characterization techniques described in the study contribute to the advancement of solid-state battery technology, offering potential benefits for future energy storage applications.
