新型炭材料2023，Vol.38Issue(1)：143-153,11.DOI:10.1016/S1872-5805(22)60615-2
氮掺杂聚丙烯腈基中空炭纤维用于锂硫电池正极
Nitrogen doped hollow porous carbon fibers derived from polyacrylonitrile for Li-S batteries
摘要
Abstract
Hollow porous carbon fibers for Li-S battery electrodes were prepared by the KOH activation of carbon prepared from hollow polyacrylonitrile fibers.The fibers had a high specific surface area of 2 491 m2·g?1,a large pore volume of 1.22 cm3·g?1 and an initial specific capacity of 330 mAh·g?1 at a current density of 1 C.To improve their electrochemical performance,the fibers were modified by treatment with hydrazine hydrate to prepare nitrogen-doped hollow porous carbon fibers with a specific surface area of 1 690 m2·g?1,a pore volume of 0.84 cm3·g?1 and a high nitrogen content of 8.81 at%.Because of the increased polarity and adsorp-tion capacity produced by the nitrogen doping,the initial specific capacity of the fibers was increased to 420 mAh·g?1 at a current density of 1 C.关键词
中空炭纤维/活化/改性/锂硫电池Key words
Hollow-shaped carbon fibers/Activation/Modification/Li-S batteries分类
化学化工引用本文复制引用
牛静宜,经德齐,张兴华,苏维国,张寿春..氮掺杂聚丙烯腈基中空炭纤维用于锂硫电池正极[J].新型炭材料,2023,38(1):143-153,11.基金项目
This work was supported by the Key Research and Development Program of Shanxi Province(202003D111002),the National Natural Science Foundation of China(51903249),the Innovation Fund Project of Shanxi Institute of Coal Chemistry,Chinese Academy of Sciences(SCJC-XCL-2022-12)and Ma-jor Science and Technology Special Plan of Shanxi Province(202101040201003).山西省重点研发计划资助项目(202003D111002) （202003D111002）
国家自然科学基金(51903249) （51903249）
2022 年度中国科学院山西煤炭化学研究所创新基金项目(SCJC-XCL-2022-12) （SCJC-XCL-2022-12）
山西省科技重大专项计划揭榜挂帅项目(202101040201003). （202101040201003）
