Abstract
<jats:p>The present study aims to conduct a comparative analysis of dispersion media used for the synthesis and storage of copper nanoparticles derived from copper formate, and to evaluate their suitability for application in current collectors. Particle characteristics in two media, namely ethyl alcohol and a mixture of alcohol and ethylene glycol, were investigated using dynamic light scattering, rheological analysis, and refractometry. The results demonstrate that the combined solvent system produces nanoparticles with a smaller average diameter (56.7 nm compared to 107.1 nm in pure alcohol) and a narrower size distribution, with 83.4% of particles falling within the 64-128 nm range. To visualise the data, particle size histograms were constructed, and the distributions were approximated using normal and Pearson distribution models. Experimental findings further indicate that the rate of particle agglomeration in the alcohol - ethylene glycol medium is approximately two times lower than in pure alcohol. On the basis of these results, the alcohol - ethylene glycol mixture can be recommended as a stabilising dispersion medium for the long-term storage of copper nanodispersions intended for use in current collector applications.</jats:p>