新型炭材料2020，Vol.35Issue(4)：420-427,8.DOI:10.1016/S1872-5805(20)60499-1
钠离子电池负极用高性能沥青基富硫炭材料
High performance sulphur-doped pitch-based carbon materials as anode materials for sodium-ion batteries
摘要
Abstract
Sulfur-doped pitch-based carbon materials with a high sulfur content were prepared by a two-step heat treatment method using medium-temperature coal tar pitch as the carbon source and sublimated sulfur as the sulfur source. The effect of the final car-bonization temperature on the composition, microstructure and electrochemical properties of the materials suitability as anode materi-als for sodium ion batteries were investigated. Results show that by increasing the final carbonization temperature the sulfur content of the materials decreases significantly, and the specific surface area and interlayer spacing gradually increase. Among the carbons obtained at different final carbonization temperatures, the sulfur content of the carbon at 800 ℃ was 20. 19 wt.％ and its interlayer spacing 0. 368 nm, and its reversible capacity was 482. 8 mAh/g at 0. 1 A/g for the first cycle and had values of 245. 9 and 103. 7 mAh/g at 0. 5 and 5 A/g, respectively after 500 cycles. The excellent sodium storage performance of the carbon at 800℃ is attribu-ted to its high sulfur content, large interlayer spacing and suitable pore structure.关键词
沥青/硫掺杂炭材料/钠离子电池负极炭Key words
Asphalt/Sulphur-doped carbon materials/Anode carbon for sodium-ion batteries分类
化学化工引用本文复制引用
贺磊,孙钰仁,王春雷,郭宏毅,郭永强,李晨,周颖..钠离子电池负极用高性能沥青基富硫炭材料[J].新型炭材料,2020,35(4):420-427,8.基金项目
国家自然科学基金(21576047, U1510204, 21776040).National Natural Science Foundation of China (21576047, U1510204, 21776040). （21576047, U1510204, 21776040）
