Eco-friendly Preparation and Performance of Polyimide Foam Composite Current Collector

JIANG Shang-ning; SHEN Ao; FEI Chen-tao; MIN Yong-gang

doi:10.14028/j.cnki.1003-3726.2026.26.077

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Eco-friendly Preparation and Performance of Polyimide Foam Composite Current Collector

更新时间：2026-05-29

- Eco-friendly Preparation and Performance of Polyimide Foam Composite Current Collector
- Polymer Bulletin (2026)
- 作者机构：
  
  广东工业大学材料与能源学院　广州　 510006
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2026.26.077
  CLC：
- Received：18 March 2026，
  
  Accepted：30 March 2026，
- 稿件说明：
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江商宁, 申奥, 费晨韬, 闵永刚. 环保型聚酰亚胺泡沫复合集流体的制备与性能. 高分子通报, doi: 10.14028/j.cnki.1003-3726.2026.26.077

Jiang, S. N.; Shen, A.; Fei, C. T.; Min, Y. G. Eco-friendly preparation and performance of polyimide foam composite current collector. Polym. Bull. (in Chinese), doi: 10.14028/j.cnki.1003-3726.2026.26.077
江商宁, 申奥, 费晨韬, 闵永刚. 环保型聚酰亚胺泡沫复合集流体的制备与性能. 高分子通报, doi: 10.14028/j.cnki.1003-3726.2026.26.077 DOI：

Jiang, S. N.; Shen, A.; Fei, C. T.; Min, Y. G. Eco-friendly preparation and performance of polyimide foam composite current collector. Polym. Bull. (in Chinese), doi: 10.14028/j.cnki.1003-3726.2026.26.077 DOI：

摘要

以聚酰亚胺泡沫(PIF)为轻质多孔基底，采用乙醛酸无甲醛化学镀铜体系，并结合无钯银活化策略，制备了PIF@Cu复合集流体。系统研究了镀液pH、温度、乙醛酸浓度和镀铜时间对沉积速率与导电性能的影响。结果表明，在pH=12.5、60 ℃、乙醛酸浓度0.1762 mol·L

–1

、镀铜时间60 min条件下，样品综合性能最佳，沉积速率为15.71 µm·h

–1

，方阻为2.805 mΩ·sq

–1

。表征结果表明，碱化处理有利于改善PIF表面状态并促进后续银活化和铜层连续沉积，所得PIF@Cu复合集流体具有较好的附着力、形变导电稳定性和热稳定性。将其用作CR2032锂金属半电池负极集流体时，循环200次后的容量保持率为94.22%，高于铜箔集流体电池的92.40%；在2C条件下比容量为150.0 mAh·g

–1

，高于铜箔电池的128.0 mAh·g

–1

，并表现出较低的单位面积质量和较高的质量能量密度。该研究为无甲醛、低贵金属用量复合集流体的制备及其在轻量化集流体中的应用提供了实验依据。

Abstract

A PIF@Cu composite current collector was prepared using polyimide foam (PIF) as a lightweight porous substrate through a glyoxylic acid-based formaldehyde-free electroless copper plating process combined with a palladium-free silver activation strategy. The effects of bath pH

temperature

glyoxylic acid concentration

and plating time on the deposition rate and electrical conductivity were systemat

ically investigated. The optimal performance was obtained at pH 12.5

60 ℃

a glyoxylic acid concentration of 0.1762 mol·L

–1

and a plating time of 60 min

giving a deposition rate of 15.71 μm·h

–1

and a sheet resistance of 2.805 mΩ·sq

–1

. The obtained PIF@Cu showed good adhesion

thermal stability

and conductive stability under deformation. After 500 bending cycles

the increase in sheet resistance was 25.0%

lower than that of Cu foil. When used as the anode current collector in a CR2032 lithium-metal half-cell

the capacity retention after 200 cycles was 94.22%

higher than 92.40% for the Cu foil-based cell

and the specific capacity at 2C reached 150.0 mAh·g

–1

higher than 128.0 mAh·g

–1

for the Cu foil-based cell. In addition

PIF@Cu exhibited a lower areal density and a higher gravimetric energy density than commercial Cu foil. These results indicate that PIF@Cu has advantages over commercial Cu foil in lightweight design

conductive stability

and electrochemical performance.

关键词

Keywords

references

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