新型炭材料（中英文）2025，Vol.40Issue(2)：409-421,13.DOI:10.1016/S1872-5805(25)60961-9
沥青馏分氧化对衍生炭材料结构和储钠性能的影响
Impact of pitch fraction oxidation on the structure and sodium storage properties of derived carbon materials
摘要
Abstract
Pitch produced by the lique-faction of coal was divided into two frac-tions:soluble in toluene(TS)and insol-uble in toluene but soluble in pyridine(TI-PS),and their differences in molecu-lar structure and oxidation activity were studied.Several different carbon materi-als were produced from them by oxida-tion in air(350 ℃,300 mL/min)fol-lowed by carbonization(1000℃ in Ar),and the effect of the cross-linked structure on their structure and sodium storage properties was investigated.The results showed that the two pitch fractions were obviously different after the air oxidation.The TS fraction with a low degree of condensation and abundant side chains had a stronger oxidation activity and thus introduced more cross-linked oxygen-containing functional groups C(O)―O which prevented carbon layer rearrangement during the carbonization.As a result,a disordered hard carbon with more defects was formed,which improved the electrochemical performance.Therefore,the carbon materials derived from TS(O-TS-1000)had an obvious disordered structure and a larger layer spacing,giving them better sodium storage perform-ance than those derived from the TI-PS fraction(O-TI-PS-1000).The specific capacity of O-TS-1000 was about 250 mAh/g at 20 mA/g,which was 1.67 times higher than that of O-TI-PS-1000(150 mAh/g).关键词
沥青组分/空气氧化/衍生炭材料/Na+储存Key words
Pitch fractions/Air oxidation/Derived carbon materials/Na+storage分类
化学化工引用本文复制引用
祁素霞,杨桃,宋燕,赵宁,刘均庆,田晓冬,武晋如,李慧,刘占军..沥青馏分氧化对衍生炭材料结构和储钠性能的影响[J].新型炭材料（中英文）,2025,40(2):409-421,13.基金项目
This work was supported by National Natural Science Foundation of China(52072383,U21A2061,22209197)and Natural Science Foundation of Shanxi Province(202203021211002,202203021222399). 国家自然科学基金(52072383,U21A2061,22209197)和山西省自然科学基金(202203021211002,2022023021222399). （52072383,U21A2061,22209197）
