Robiansyah, Bow, Y. and Dewi, T. (2024) “ Synthesis and Characterization of Silicon Nanoparticles from Coal Fly Ash Using Ultrasonication as a Battery Anode”, International Journal of Research in Vocational Studies (IJRVOCAS), 4(2), pp. 23–32. doi: 10.53893/ijrvocas.v4i2.282.