Cerium-modified BiPO4 as a promising electrode material for hybrid supercapacitorsIfra Arshad, Asmat Ullah, Muhammad Khawar Abbas, Shahid Iqbal, Aqeel Ahmad Shah, Asad Akram, Naveed Akhtar Shad, Kh. Abd El-Aziz, Hafiz T. Ali and Yasir JavedEur. Phys. J. Plus, 140 10 (2025) 958DOI: https://doi.org/10.1140/epjp/s13360-025-06901-0