柔性自支撑PDDA-Si/G纳米复合薄膜的制备及储锂性能

张亚婷; 张凯博; 贾凯丽; 贺新福; 刘国阳; 王伟; 张永玲; 邱介山

doi:10.11949/j.issn.0438-1157.20181287

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柔性自支撑PDDA-Si/G纳米复合薄膜的制备及储锂性能

材料化学工程与纳米技术 | 更新时间：2026-07-24

- 柔性自支撑PDDA-Si/G纳米复合薄膜的制备及储锂性能
- Preparation and lithium storage properties of flexible self-standing PDDA-Si/G nanocomposite film
- 化工学报 2019年70卷第3期页码：1144-1151
- 作者机构：
  
  1.西安科技大学化学与化工学院，陕西西安 710054
  2.国土资源部煤炭资源勘查与综合利用重点实验室，陕西西安 710021
  3.大连理工大学化工学院，辽宁大连 116024
  4.北京化工大学化学工程学院，北京 100029
- 作者简介：
  
  及第一作者：通信作者:张亚婷（1972—），女，博士，教授，isyating@163.com
- 基金信息：
  
  国家自然科学基金项目(U1703251);陕西省重点研发计划项目(2017ZDCXL-GY-10-01-02);国土资源部煤炭资源勘查与综合利用重点实验室开放研究课题项目(KF2016-4)
- DOI：10.11949/j.issn.0438-1157.20181287
  中图分类号： TM 912.9
- 收稿：2018-11-02，
  
  修回：2018-12-24，
  
  网络首发：2026-07-24，
  
  纸质出版：2019-03-05
- 稿件说明：
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张亚婷, 张凯博, 贾凯丽, 贺新福, 刘国阳, 王伟, 张永玲, 邱介山. 柔性自支撑PDDA-Si/G纳米复合薄膜的制备及储锂性能[J]. 化工学报, 2019, 70(3): 1144-1151

ZHANG Yating, ZHANG Kaibo, JIA Kaili, HE Xinfu, LIU Guoyang, WANG Wei, ZHANG Yongling, QIU Jieshan. Preparation and lithium storage properties of flexible self-standing PDDA-Si/G nanocomposite film[J]. CIESC Journal, 2019, 70(3): 1144-1151
张亚婷, 张凯博, 贾凯丽, 贺新福, 刘国阳, 王伟, 张永玲, 邱介山. 柔性自支撑PDDA-Si/G纳米复合薄膜的制备及储锂性能[J]. 化工学报, 2019, 70(3): 1144-1151 DOI： 10.11949/j.issn.0438-1157.20181287.

ZHANG Yating, ZHANG Kaibo, JIA Kaili, HE Xinfu, LIU Guoyang, WANG Wei, ZHANG Yongling, QIU Jieshan. Preparation and lithium storage properties of flexible self-standing PDDA-Si/G nanocomposite film[J]. CIESC Journal, 2019, 70(3): 1144-1151 DOI： 10.11949/j.issn.0438-1157.20181287.

摘要

通过静电自组装技术成功制备得到柔性自支撑聚二烯二甲基氯化铵-Si/石墨烯(PDDA-Si/G)纳米复合薄膜。该复合薄膜无添加黏结剂及导电炭黑且仍能保持电极结构的完整性，其中石墨烯提供完整的导电网络和机械韧性。电化学测试结果表明，当电流密度为0.2 A/g，复合材料的比容量可达1439.9 (mA·h)/g，库仑效率保持98%以上。且在高电流密度(2 A/g)下，复合材料的比容量仍可维持在499.9 (mA·h)/g，远高于商品化纯Si电极的电化学性能。

Abstract

Silicon is an active electrode material for future commercial lithium-ion batteries with extremely high theoretical specific capacity (4200 (mA·h)/g). However

the large volume change of silicon over charge-discharge cycles weakens its competitiveness in the capacity and cycle life. A flexible self-supporting polydiene dimethylammonium chloride-Si/graphene (PDDA-Si/G) nanocomposite film was successfully prepared by electrostatic self-assembly technique. The composite film can maintain the integrity of electrode structure without adding binder and conductive carbon black. Graphene provides complete conductive network and mechanical toughness. The electrochemical test results show that when the current density was 0.2 A/g

the specific capacity of PDDA-Si/G composite could reach 1439.9 (mA·h)/g and the Coulombic efficiency was above 98%. The specific capacity was 1209.3 (mA·h)/g after 80 cycles. The specific capacity still maintained 499.9 (mA·h)/g at a high current density (2 A/g).

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references

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