Regulating High Temperature Energy Storage Performance of Spirofluorene Polyimides by Halogens

PENG Jia-jun; HE Guang-hu; LUO Hang; ZHANG Dou

doi:10.14028/j.cnki.1003-3726.2026.25.376

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Regulating High Temperature Energy Storage Performance of Spirofluorene Polyimides by Halogens

更新时间：2026-03-21

- Regulating High Temperature Energy Storage Performance of Spirofluorene Polyimides by Halogens
  增强出版
- Polymer Bulletin Vol. 39, Issue 4, Pages: 631-642(2026)
- 作者机构：
  
  中南大学粉末冶金全国重点实验室　长沙 410083
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2026.25.376
  CLC：
- Received：25 December 2025，
  
  Accepted：22 January 2026，
  
  Online First：09 March 2026，
  
  Published：20 April 2026
- 稿件说明：
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彭家俊, 何光虎, 罗行, 张斗. 卤元素调控螺芴聚酰亚胺高温储能性能. 高分子通报, 2026, 39(4), 631–642.

Peng, J. J.; He, G. H.; Luo, H.; Zhang, D. Regulating high temperature energy storage performance of spirofluorene polyimides by halogens. Polym. Bull. (in Chinese), 2026, 39(4), 631–642.
彭家俊, 何光虎, 罗行, 张斗. 卤元素调控螺芴聚酰亚胺高温储能性能. 高分子通报, 2026, 39(4), 631–642. DOI： 10.14028/j.cnki.1003-3726.2026.25.376.

Peng, J. J.; He, G. H.; Luo, H.; Zhang, D. Regulating high temperature energy storage performance of spirofluorene polyimides by halogens. Polym. Bull. (in Chinese), 2026, 39(4), 631–642. DOI： 10.14028/j.cnki.1003-3726.2026.25.376.

摘要

螺芴聚酰亚胺(spirofluorene polyimide，SFPI)是一类具备大体积刚性螺芴结构的聚酰亚胺(polyimide，PI)，通常拥有较高的玻璃化转变温度(

350 ℃)以及扭曲结构，具备在高温极端环境下开展储能应用的潜力。本研究以SFPI为化学改性基体，除了引入典型卤素改性氟代之外，还对其他卤素(Cl、Br)的取代进行了研究，这也是目前高温电介质聚合物研究较少的方向。通过化学亚胺化法制备得到3种卤代螺芴聚酰亚胺：FFPI(氟取代)、CFPI(氯取代)、BFPI(溴取代)。在150 ℃和储能效率(

)

90%的条件下，其中BFPI的储能密度最高，为

=4.54 J/cm

，相比SFPI(同条件下储能密度

=2.07 J/cm

)提升了100%以上。这表明除了氟代以外，其他卤元素取代也是提升聚合物在高温下储能性能的有效途径。

Abstract

Spirofluorene polyimide (SFPI) is a type of polyimide (PI) with a large-volume rigid spirofluorene structure. It typically exhibits a high glass transition temperature (

350 ℃) and twisted structure

which suggests its potential applicability in extreme environments. In this study

SFPI was employed as the matrix for chemical modification; besides the typical halogen modification of fluorination

substitutions with other halogens (Cl

Br) were also investigated

a research direction that is currently scarce in the field of high-temperature dielectric polymers. In this study

three halogenated SFPIs were synthesized via a one-step chemical polymerization method

namely FFPI (fluorine-substituted)

CFPI (chlorine-substituted)

and BFPI (bromine-substituted). Ultimately

at 150 ℃ and with an energy storage efficiency (

)

90%

BFPI achieved a maximum energy storage density of 4.54 J/cm

which represents an increase of more than 100% compared with SFPI (whose energy storage density was 2.07 J/cm

under the same conditions). This indicates that besides fluorination

substitution with other halogen elements is also an effective approach to enhance the high temperature energy storage performance of polymers.

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