Nabila Dewi Saidhah, Yuda Prima Hardianto, Abdulmajid Abdallah Mirghni, Ananda Sholeh Rifky Hakim, Syed Shaheen Shah, Ade Siyanti Nurul Hidayah, Abduljamiu Olalekan Amao, Markus Diantoro, Md Abdul Aziz
The growing demand for sustainable and high-performance energy storage systems has driven interest in bio-derived carbon materials, particularly for use in zinc ion hybrid supercapacitors (ZIHSCs). In this study, sugarcane bagasse was utilized as a low-cost and renewable precursor for the synthesis of activated carbon, with its structure significantly enhanced through a templating method using magnesium oxide. The resulting modified sugarcane bagasse-derived activated carbon (SAC) exhibited a highly porous and more ordered carbon framework. These structural improvements enabled superior ionic diffusion and electrical conductivity, making the material highly effective as a ZIHSC cathode. The modified SAC-based ZIHSC system achieved an impressive specific capacitance of 482 F/g and a specific capacity of 268 mAh/g at a current density of 1 A/g. Moreover, it demonstrated excellent cycling stability with 80 % capacity retention over 1000 cycles and nearly ideal charge transfer and reversibility. Compared with previously reported ZIHSC technologies, this system offers a compelling alternative for next-generation energy storage solutions, highlighting the potential of agricultural waste valorization in sustainable device development. © 2025 Elsevier Ltd
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang, Malang, 65145, Indonesia; Physics Department, King Fahd University of Petroleum & Minerals (KFUPM), PO Box 5047, Dhahran, 31261, Saudi Arabia; Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management (IRC-HTCM), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia; Materials Science and Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia; Socio-Environmental Energy Science Department, of Energy Science, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan; Center for Integrative Petroleum Research, College of Petroleum Engineering & Geosciences, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia; Department of Civil and Environmental Engineering, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia; Center of Advanced Materials for Renewable Energy, CAMRY, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Interdisciplinary Research Center for Sustainable Energy Systems (IRC-SES), Department of Materials Science and Engineering, King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
