Natural Biomass-Derived Porous Carbon from Water Hyacinth Used as Composite Cathode for Lithium Sulfur Batteries

Otong Nurhilal (), Sahrul Hidayat, Dadan Sumiarsa and Risdiana Risdiana ()
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Otong Nurhilal: Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
Sahrul Hidayat: Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
Dadan Sumiarsa: Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
Risdiana Risdiana: Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia

Sustainability, 2023, vol. 15, issue 2, 1-9

Abstract: We have successfully prepared porous carbon from water hyacinth plants using several steps, i.e., carbonization, activation, and calcination processes. Water hyacinth porous carbon is an alternative as a carbon material due to the ease and low cost of the manufacturing process, abundant raw materials in nature, and its contribution to solving environmental problems. Utilization of water hyacinth weed plants as raw materials for porous carbon will provide added value to water hyacinth. In this research, porous carbon is used as the host material of sulfur in the electrodes of lithium sulfur batteries. The N 2 adsorption desorption characterization showed a porous carbon surface area of around 642 m 2 /g and a total pore volume of 0.713 cm 3 /g. The sulfur content of the composite electrode of C/S 1:2.5 (%w/w) was 60.6%. The four-line probe (FLP) testing showed electrical conductivity of porous carbon of around 3.93 × 10 −2 S/cm and the electrical conductivity of the composite electrode was around 5.4 × 10 −4 S/cm. Furthermore, the composite electrodes were applied as cathodes of lithium sulfur batteries, which have thicknesses around 200 µm and sulfur loading of 3.57 mg/cm 2 . The highest discharge capacity of the battery was 312 mAh/g and the Coulombic efficiency was around 70%.

Keywords: lithium sulfur battery; water hyacinth; porous carbon; discharge capacity; composite cathode (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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