Name : [in Japanese]
Location : [in Japanese]
Date : October 30, 2025 - October 31, 2025
Pages 30-31
Rice husks are discarded without effective utilization due to inconsistent composition and high ash content. To utilize them as a carbon source, it is necessary to remove the ash and make a homogeneous material. In this study, we focused on solvent extraction to resolve these issues. The objective was to improve the electronic conductivity of LiNi0.5Mn1.5O₄ (LNMO), a cathode active material for lithium-ion batteries, by applying carbon coating using Soluble extracted from rice husks. Carbon coating on LNMO was applied by mixing Soluble and LNMO, heating at 150°C for 30 min in N2 atmosphere, followed by heating at 330°C for 1 h in air. The thickness of carbon coated on LNMO(LNMO/C) was 10-45 nm. The charge-discharge performance at high current density of 10C showed that LNMO failed to perform charge-discharge cycles, LNMO/C exhibited a discharge capacity of 30 mAh/g. This result suggests that the coating of conductive carbon derived from Soluble on LNMO particle surface improved conductivity, thereby enhancing battery performance at high current density.
