Rhizopus Hyphae Carbon as Efficient Sulfur Host For Lithium–Sulfur Batteries

IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electronic Materials Pub Date : 2024-09-10 DOI:10.1007/s11664-024-11403-3
Weiyong Zhang, Long Wang, Lei Huang, Xinping He, Xinqi Liang, Xinhui Xia, Yongqi Zhang, Feng Cao, Minghua Chen, Wangjun Wan, Chen Wang, Yang Xia, Jun Zhang, Wenkui Zhang
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Abstract

Construction of advanced carbon material is critical for the development of high-performance lithium–sulfur batteries. In this work, we report Rhizopus hyphae biomass carbon (RHBC) as a host material for the sulfur cathode of lithium–sulfur batteries. The porous structure of the RHBC is optimized through hydrothermal activation using KOH solution. The introduction of RHBC into the cathode not only enhances the electronic conductivity of the sulfur cathode, but also substantially improves the capacity of the active materials. Additionally, the RHBC can effectively relieve the volume expansion problem of the sulfur conversion reaction and maintain structural stability, leading to improved lifetime and capacity. Accordingly, the KOH-activated RHBC/S cathode presents initial discharge specific capacity of 748 mAh/g at current density of 0.1 C. Furthermore, the porous structure facilitates rapid transport of electrons and ions, thereby enabling good high-rate performance.

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根瘤菌菌丝碳作为锂硫电池的高效硫宿主
先进碳材料的构建对于高性能锂硫电池的开发至关重要。在这项工作中,我们报道了根瘤菌菌丝生物质碳(RHBC)作为锂硫电池硫阴极的宿主材料。通过使用 KOH 溶液进行水热活化,优化了 RHBC 的多孔结构。在阴极中引入 RHBC 不仅能增强硫阴极的电子导电性,还能大幅提高活性材料的容量。此外,RHBC 还能有效缓解硫转化反应的体积膨胀问题,并保持结构的稳定性,从而提高寿命和容量。因此,KOH 激活的 RHBC/S 阴极在电流密度为 0.1 C 时的初始放电比容量为 748 mAh/g。此外,多孔结构有利于电子和离子的快速传输,从而实现了良好的高速性能。
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来源期刊
Journal of Electronic Materials
Journal of Electronic Materials 工程技术-材料科学:综合
CiteScore
4.10
自引率
4.80%
发文量
693
审稿时长
3.8 months
期刊介绍: The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.
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