Abstract：
This work provides a novel, low-cost, and effective method to prepare disordered carbon materials for advanced sodium-ion batteries using biomass. A large amount of olive stone waste is yearly produced in the world, and it could be re-used for fine applications other than fuel for heat production. After treatment with sulfuric acid solution and carbonization process, wastes of olive stone are efficiently transformed into optimized carbon electrode material. XRD, XRF and XPS, electron microscopy, and physical gas adsorption are used for the compositional, microstructural, and textural characterization of the carbons. During the synthesis, impurities are removed, C-S links are formed and micropores pores are created. Sulfuric acid acts like S-dopant. The latent pores, or pores closed to nitrogen, can be found using CO2 adsorption, and are very suitable for accommodation for sodium. The results reveal that the reversible capacity is raised from ca. 200 mAh g-1 to ca. 250 mAh g-1 for the carbon obtained through treatment with sulfuric acid. The improved electrochemistry is the result of the s-doping and the porosity.
摘要：
这部作品提供了一部小说，低成本,以及使用生物质制备高级钠离子电池无序碳材料的有效方法。世界上每年都会产生大量的橄榄石废料，它可以重新用于除燃料以外的精细应用以产生热量。用硫酸溶液和碳化工艺处理后，废橄榄石高效转化为优化的碳电极材料。XRD,XRF和XPS,电子显微镜，和物理气体吸附用于组成，微观结构,和碳的结构表征。在合成过程中,杂质被去除，形成C-S连接并产生微孔孔。硫酸的作用类似于S-掺杂剂。潜在的毛孔，或者对氮封闭的孔隙，可以通过二氧化碳吸附来发现，非常适合钠的住宿。结果表明，可逆容量从大约。200mAhg-1至ca。通过硫酸处理获得的碳为250mAhg-1。改进的电化学是s掺杂和孔隙率的结果。
