低碳化学与化工2025，Vol.50Issue(11)：64-73,10.DOI:10.12434/j.issn.2097-2547.20250008
新疆不粘煤中有机组分结构调控对其储钠性能的影响
Effects of structural modulation of organic compounds in Xinjiang non-caking coal on their sodium storage properties
摘要
Abstract
Due to the structural complexity of coal,its structural evolution is uncontrollable,which hinders the design and preparation of high-performance coal-based hard carbon materials.The effects of N-methylpyrrolidone(NMP)and NMP-CS2(equal volume ratio)as extractants on structures and sodium storage properties of coal-based hard carbon materials were studied using Xinjiang nonstick coal as the raw material.The results show that the content of C==O groups on surface of the samples(HC-NMP)obtained with NMP as extractant is the highest,which is conducive to the construction of cross-linked structures during the preoxidation process.HC-NMP has large carbon layer distance and more disordered carbon structure,which are conducive to Na+storage.At 20 mA/g,the reversible specific capacity of HC-NMP is 281.1 mAh/g,and the first cycle Coulomb efficiency is 84.1%.After 200 cycles at 100 mA/g,the reversible specific capacity of HC-NMP is 240.3 mAh/g.关键词
新疆不粘煤/萃取-预氧化/萃余煤/煤基硬炭/储钠性能Key words
Xinjiang non-caking coal/extraction-peroxidation/extraction residue coal/coal-based hard carbon/sodium storage properties分类
化学工程引用本文复制引用
余佳慧,徐天齐,姚宗序,魏群,董良,刘均庆..新疆不粘煤中有机组分结构调控对其储钠性能的影响[J].低碳化学与化工,2025,50(11):64-73,10.基金项目
江苏省碳资源清洁利用重点实验室研究项目(BM2024007) （BM2024007）
江苏省研究生科研创新项目(KYCX23_2817,KYCX24_2892) （KYCX23_2817,KYCX24_2892）
中国矿业大学研究生创新项目(2024WLKXJ058). （2024WLKXJ058）
