Reddy Bhumi Reddy Srinivasulu, Premasudha Mookala, Lee Yeon-Ju, Ahn Hyo-Jun, Reddy Nagireddy Gari Subba, Ahn Jou-Hyeon, Cho Kwon-Koo
Department of Materials Engineering and Convergence Technology & Research Institute for Green Energy Convergence Technology Gyeongsang National University 501, Jinju-daero, Jinju-si, Gyeongsangnam-do 52828, Republic of Korea.
School of Materials Science and Engineering, Gyeongsang National University, 501 Jinju-daero, Jinju-si, Gyeongsangnam-do 52828, Republic of Korea.
J Nanosci Nanotechnol. 2020 Nov 1;20(11):7087-7091. doi: 10.1166/jnn.2020.18826.
To develop the next-generation energy storage systems, lithium-sulfur batteries represent an attractive option due to its high theoretical capacity, and energy density. In this work, MoS₂/rGO (reduced graphene oxide) was prepared by hydrothermal synthesis and sulfur added by the melt diffusion method. The as-prepared MoS₂/rGO has strong polysulfides entrapping, high conductivity, large surface area, and high catalytic activity, consequently resulting in enhanced rate performance and cycling capability of Li-S batteries. The coin cells were constructed with the MoS₂/rGO/S cathode material, exhibit a high reversible capacity of nearly 1380 mAh/g at 0.1 C, outstanding cycling stability with a low capacity fading rate. Present work reveals that the hierarchal MoS₂/rGO/S cathodes are potential candidate materials for future high-performance lithium-sulfur batteries.
为了开发下一代储能系统，锂硫电池因其高理论容量和能量密度而成为一个有吸引力的选择。在这项工作中，通过水热合成法制备了MoS₂/rGO（还原氧化石墨烯），并通过熔体扩散法添加了硫。所制备的MoS₂/rGO具有很强的多硫化物捕获能力、高导电性、大表面积和高催化活性，从而提高了锂硫电池的倍率性能和循环能力。用MoS₂/rGO/S阴极材料构建的硬币电池，在0.1 C时表现出近1380 mAh/g的高可逆容量，具有出色的循环稳定性和低容量衰减率。目前的工作表明，分级结构的MoS₂/rGO/S阴极是未来高性能锂硫电池的潜在候选材料。
