油棕树叶柄制备氮掺杂多孔炭纳米片用于高性能锂硫电池
TQ152; 锂硫电池宿主材料的成份与结构区别,是引起电池性能差异的重要原因.经济性好且环保的碳基宿主材料是实现锂硫电池实用化的最有效策略之一.本研究利用油棕树叶柄为原料,采用尿素浸泡和化学活化的方法,制备出具有堆叠纳米片层结构的氮掺杂多孔炭材料(N-PPCNs)用作硫正极宿主材料,显著提高了电池的性能.N-PPCNs实现了 N元素的均匀掺杂,作为硫的宿主材料,增加了对多硫化物的吸附能,加速了多硫化物的转化动力学.复合多孔结构和氮的有效掺杂共同作用,抑制了"穿梭效应",使复合电极达到1257 mAh g-1的高比容量,在1C倍率下循环500圈仍可保持490mAhg-1的比容...
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| Published in | 新型炭材料（中英文） Vol. 40; no. 1; pp. 222 - 230 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
上海交通大学国家电投智慧能源创新学院,上海 200240%上海交通大学化学化工学院,上海 200240
01.02.2025
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1872-5805 1872-5805 |
| DOI | 10.1016/S1872-5805(25)60952-8 |
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| Abstract | TQ152; 锂硫电池宿主材料的成份与结构区别,是引起电池性能差异的重要原因.经济性好且环保的碳基宿主材料是实现锂硫电池实用化的最有效策略之一.本研究利用油棕树叶柄为原料,采用尿素浸泡和化学活化的方法,制备出具有堆叠纳米片层结构的氮掺杂多孔炭材料(N-PPCNs)用作硫正极宿主材料,显著提高了电池的性能.N-PPCNs实现了 N元素的均匀掺杂,作为硫的宿主材料,增加了对多硫化物的吸附能,加速了多硫化物的转化动力学.复合多孔结构和氮的有效掺杂共同作用,抑制了"穿梭效应",使复合电极达到1257 mAh g-1的高比容量,在1C倍率下循环500圈仍可保持490mAhg-1的比容量.这项工作充分证明了废弃生物质再利用的潜力. |
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| AbstractList | TQ152; 锂硫电池宿主材料的成份与结构区别,是引起电池性能差异的重要原因.经济性好且环保的碳基宿主材料是实现锂硫电池实用化的最有效策略之一.本研究利用油棕树叶柄为原料,采用尿素浸泡和化学活化的方法,制备出具有堆叠纳米片层结构的氮掺杂多孔炭材料(N-PPCNs)用作硫正极宿主材料,显著提高了电池的性能.N-PPCNs实现了 N元素的均匀掺杂,作为硫的宿主材料,增加了对多硫化物的吸附能,加速了多硫化物的转化动力学.复合多孔结构和氮的有效掺杂共同作用,抑制了"穿梭效应",使复合电极达到1257 mAh g-1的高比容量,在1C倍率下循环500圈仍可保持490mAhg-1的比容量.这项工作充分证明了废弃生物质再利用的潜力. |
| Abstract_FL | The composition and structure of the sulfur host material in lithium-sulfur batteries are the main reasons for differ-ences in battery performance,and one that is both economical and environmentally friendly is needed for producing practical batteries.We have used an innovative method to prepare nitrogen-doped porous carbon nanosheets(N-PPCNs)from the peti-oles of palm trees.A nitrogen dopped material consisting of stacks of these nano-sheets was synthesized by soaking the peti-oles in urea followed by chemical activation.The porous carbon materials were uniformly doped with nitrogen and were used as the sulfur host material,which increased the adsorption energy of polysulfides and accelerated the conversion from long-chain polysulfides to short-chain polysulfides.The porous structure and nitrogen doping work together to suppress the"shuttle effect",enabling the electrode to achieve a high specific capacity of 1257 mAh g-1,and still maintain a specific capacity of 490 mAh g-1 after 500 cycles at a rate of 1 C.This work demonstrates the potential reuse of waste biomass. |
| Author | 王开学 赵星赫 刘于斯 |
| AuthorAffiliation | 上海交通大学国家电投智慧能源创新学院,上海 200240%上海交通大学化学化工学院,上海 200240 |
| AuthorAffiliation_xml | – name: 上海交通大学国家电投智慧能源创新学院,上海 200240%上海交通大学化学化工学院,上海 200240 |
| Author_FL | LIU Yu-si WANG Kai-xue ZHAO Xing-he |
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| DOI | 10.1016/S1872-5805(25)60952-8 |
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| DocumentTitle_FL | Porous nitrogen-doped carbon nanosheets derived from oil palm petioles for use as the sulfur host material in high-rate and durable Li-S batteries |
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| Keywords | Waste resource reuse 转化反应动力学 Conversion reaction kinetics Porous carbon nanosheets 锂硫电池 Lithium-sulfur battery 废弃资源再利用 High-performance 多孔炭纳米片 高性能 |
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| Publisher | 上海交通大学国家电投智慧能源创新学院,上海 200240%上海交通大学化学化工学院,上海 200240 |
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| Title | 油棕树叶柄制备氮掺杂多孔炭纳米片用于高性能锂硫电池 |
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