Sofyan, N., Sari, R. P., Zulfia, A., & Kartini, E. (2018). The Characteristics of LiFePO4/Copper Nanoparticles/Carbon Nanotubes Composites Used as Lithium Ion Battery Cathode. International Journal on Advanced Science, Engineering and Information Technology, 8(6), 2709–2713. https://doi.org/10.18517/ijaseit.8.6.3519