Ma Zihui, Wen Zhe, Song Yan, Yang Tao, Tian Xiaodong, Wu Jinru, Liu Yaxiong, Liu Zhanjun, Wang Huiqi
CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
College of Energy and Power Engineering, North University of China, Taiyuan 030051, China.
Nanomaterials (Basel). 2024 Aug 28;14(17):1410. doi: 10.3390/nano14171410.
Coal tar pitch (CTP) has become an ideal choice in the preparation of anode precursors for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) because of its abundant carbon content, competitive pricing and adjustable structure properties. In this paper, sulfurized pitch-based carbon (SPC-800) was obtained by allowing CTP to react with sulfur at 350 °C and subsequently achieve carbonization at 800 °C. SPC-800 was more disordered and had a larger layer spacing than carbonized CTP (PC-800). Upon utilization as an anode for LIBs, SPC-800 possessed a higher reversible specific capacity (478.1 mAh g at 0.1 A g), while utilization in SIBs displayed a capacity of 220.9 mAh g at 20 mA g. This work is an important guide to the design of high-performance anodes suitable for use with both LIBs and SIBs.
煤焦油沥青（CTP）因其丰富的碳含量、具有竞争力的价格和可调节的结构特性，已成为制备锂离子电池（LIBs）和钠离子电池（SIBs）负极前驱体的理想选择。本文通过使CTP在350°C下与硫反应，随后在800°C下碳化，得到了硫化沥青基碳（SPC-800）。SPC-800比碳化CTP（PC-800）更加无序，层间距更大。用作LIBs负极时，SPC-800具有更高的可逆比容量（0.1 A g下为478.1 mAh g），而在SIBs中使用时，在20 mA g下的容量为220.9 mAh g。这项工作为设计适用于LIBs和SIBs的高性能负极提供了重要指导。
