Graphene-based negative electrodes in lithium-ion batteries have recently been the focus of interest. In this study, sulfur (S)–doped graphene powders in different functionality have been prepared in one step by using Yucel’s method for the first time in the literature and they have been used as anode materials of Li-ion batteries. By changing the scanned potential during the preparation of S-doped graphene powders, the graphenic surface is covalently doped by –C-S-C- and –C-SO_x-C- (x:2, 3) groups at different amount. When the potential has been scanned in wider potential range (− 1.0 and 2.5 V), 48 sp²-hybridized carbon rings have been determined on the powders by using Raman analysis. It is the lowest as 16 for graphenic powder prepared at narrower potential range (1.5 and 2.5 V) and chronoamperometric method. S-doped graphene powders have been investigated by microscopic methods. Electrochemical properties of the prepared S-doped graphene powders and their potential use in Li-ion batteries have been assessed. At a 50-mA/g current density, the 915-mAh/g specific capacity has been determined as the highest discharge capacity in the powder which was prepared by the chronoamperometric method. Specific capacities of 710 mAh/g, 594 mAh/g, and 642 mAh/g have been observed in the powders prepared between − 1.0–(+ 2.5 V), 0.6–(+ 2.5 V), and 1.5–(+ 2.5 V) samples, respectively.

锂离子电池中基于石墨烯的负极最近成为人们关注的焦点。在这项研究中，文献中首次使用Yucel方法一步制备了功能不同的硫（S）掺杂的石墨烯粉，它们已被用作锂离子电池的负极材料。通过在制备S掺杂石墨烯粉的过程中改变扫描电势，石墨烯表面被–CSC-和–C-SO _x -C-（x：2，3）基团共价掺杂。在较宽的电位范围（-1.0和2.5 V）中扫描电位时，48 sp ²通过使用拉曼分析在粉末上确定了-杂化碳环。对于在较窄的电位范围（1.5和2.5 V）和计时安培法制备的石墨粉而言，其最低值为16。S掺杂的石墨烯粉末已经通过微观方法进行了研究。已评估了制备的S掺杂石墨烯粉末的电化学性能及其在锂离子电池中的潜在用途。在通过电流安培法制备的粉末中，在电流密度为50 mA / g时，将915 mAh / g的比容量确定为最高放电容量。在− 1.0 –（+ 2.5 V），0.6 –（+ 2.5 V）和1.5 –（+ 2.5 V）之间制备的粉末中，观察到的比容量分别为710 mAh / g，594 mAh / g和642 mAh / g。 ）的样本。