The Effect of Unit Number Composition (x = 1.5; 1.6; 1.7; 1.8; 1.9; 2.0; 2.1, and 2.2) of Natrium Super Ionic Conductor (NASICON) as Solid Electrolyte on Ion-Sodium Batteries M Jahiding, I. N. Sudiana, W. S. Arsyad, L. Rusman, - Fitriani, W. D. Triandari, M. A. Mahfud, Y. Milen, J. Wulandari, A. M. R. Akqadri International Journal of Acta Material Vol. 1 No. 1 2024 DOI 10.62749/ijactmat.v1i1.4