Effects of structural modulation of organic compounds in Xinjiang non-caking coal on their sodium storage properties

YU Jiahui; XU Tianqi; YAO Zongxu; WEI Qun; DONG Liang; LIU Junqing

doi:10.12434/j.issn.2097-2547.20250008

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Effects of structural modulation of organic compounds in Xinjiang non-caking coal on their sodium storage properties

更新时间：2025-11-25

- Effects of structural modulation of organic compounds in Xinjiang non-caking coal on their sodium storage properties
- Vol. 50, Issue 11, Pages: 64-73(2025)
- 作者机构：
  
  1.中国矿业大学能源资源高效加工与洁净化利用教育部国际合作联合实验室，江苏徐州 221116
  2.中国矿业大学江苏省碳资源清洁利用重点实验室，江苏徐州 221116
  3.中国矿业大学化工学院，江苏徐州 221116
  4.北京低碳清洁能源研究院，北京 102299
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250008
  CLC： TQ536
- Received：07 January 2025，
  
  Revised：2025-03-04，
  
  Published：25 November 2025
- 稿件说明：
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余佳慧,徐天齐,姚宗序等.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.

YU Jiahui,XU Tianqi,YAO Zongxu,et al.Effects of structural modulation of organic compounds in Xinjiang non-caking coal on their sodium storage properties[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(11):64-73.
余佳慧,徐天齐,姚宗序等.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. DOI： 10.12434/j.issn.2097-2547.20250008.

YU Jiahui,XU Tianqi,YAO Zongxu,et al.Effects of structural modulation of organic compounds in Xinjiang non-caking coal on their sodium storage properties[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(11):64-73. DOI： 10.12434/j.issn.2097-2547.20250008.

摘要

煤炭因具有结构复杂性而导致其结构演变不可控，这对高性能煤基硬炭材料的设计与制备产生了阻碍。以新疆不粘煤为原料，分别研究了N-甲基吡咯烷酮（NMP）和等体积比NMP-CS2作为萃取剂对煤基硬炭材料结构和储钠性能的影响。结果表明，以NMP作为萃取剂所得样品（HC-NMP）表面的C==O基团含量最高，这有利于在预氧化过程中构建交联结构。HC-NMP具有较大的碳层间距和较多的无序碳结构，有利于Na

存储。在20 mA/g下，HC-NMP的可逆比容量为281.1 mAh/g，第一圈库伦效率为84.1%。在100 mA/g下循环200次，HC-NMP的可逆比容量为240.3 mAh/g。

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-CS

(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.

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references

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