Rasu Muruganantham, Fu-Ming Wang, Rio Akbar Yuwono, Michael Sabugaa, Wei-Ren Liu
Sustainable electrical energy storage devices are an effective solution for the fossil fuel-based electrical power systems and aid in abating the environmental pollution. In this study, we design a sustainable and green approach for producing hard carbon from the biomass feedstock of waste mango peels through a simple carbonization route at low and high temperatures, namely, 600 °C (C600) and 1000 °C (C1000), respectively. The resultant hard carbon is used as an anode for lithium-ion batteries. The sample prepared at higher temperature exhibits a higher reversible cyclic capacity and rate capability than the sample prepared at low temperature. The C1000 sample delivers a reversible discharge capacity of 801 mA h g-1 at 100 mA g-1 and sustains a discharge capacity of 628 mA h g-1 over 200 cycles. The hard carbon electrode cell has a high capacitive charge and stable plateau capacity, indicating that the performance of the C1000 cell is good. Moreover, the higher specific surface area and hierarchical porous structure provide more Li-ion active sites, faster diffusion kinetics, and higher electronic conductivity during the charge/discharge process. The hard carbon derived from mango peels is a potential candidate for use in advanced large-scale energy storage applications. Specifically, this work presents a sustainable approach to achieve eco-friendly and cost-effective waste biomass management for energy applications. © 2021 American Chemical Society.
Department of Chemical Engineering, R&D Center for Membrane Technology, Center for Circular Economy, Chung Yuan Christian University, 200 Chung Pei Road, Chung Li District, Taoyuan City, 32023, Taiwan; Sustainable Energy Development Centre, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), 43, Keelung Road, Section 4, Da'an District, Taipei, 10607, Taiwan; Graduate School Department, University of San Carlos, Cebu City, 8506, Philippines
