Design and performance study of HNBR-based solid-state electrolytes

WANG Shidong; LI Runzhi; ZHANG Hongwei; YUAN Pei

doi:10.11949/0438-1157.20251314

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Design and performance study of HNBR-based solid-state electrolytes

更新时间：2026-04-29

- Design and performance study of HNBR-based solid-state electrolytes
- CIESC Journal Pages: 1-15(2026)
- 作者机构：
  
  1.福州大学化工学院，福建福州 310029
  2.贵州工程应用技术学院化学工程学院，贵州毕节 100084
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20251314
  CLC： TQ317.9
- Received：25 November 2025，
  
  Revised：2025-01-13，
  
  Online First：29 April 2026，
- 稿件说明：
移动端阅览
王世栋, 李润之, 张宏伟, 袁珮. HNBR基固态电解质的设计及其性能研究[J]. 化工学报,

WANG Shidong, LI Runzhi, ZHANG Hongwei, YUAN Pei. Design and performance study of HNBR-based solid-state electrolytes[J]. CIESC Journal,
王世栋, 李润之, 张宏伟, 袁珮. HNBR基固态电解质的设计及其性能研究[J]. 化工学报, DOI： 10.11949/0438-1157.20251314

WANG Shidong, LI Runzhi, ZHANG Hongwei, YUAN Pei. Design and performance study of HNBR-based solid-state electrolytes[J]. CIESC Journal, DOI： 10.11949/0438-1157.20251314

摘要

为开发兼具高离子电导率、宽电化学窗口和良好稳定性的固态电解质，本研究以氢化丁腈橡胶（HNBR）为基体，系统研究其在固态电解质中的应用潜力。首先通过非均相催化加氢技术，成功制备了一系列具有不同腈基含量、分子量以及加氢度的HNBR样品，并系统评估其结构对电化学性能的调控规律。结果表明，在腈基含量处于35 - 41 wt%、分子量在10 - 36万且加氢度为0 - 97%的范围内，具备高腈基、高分子量以及高加氢度的HN41-36W-97%/LiTFSI电解质展现出最优性能，其分解电压达到4.8V，Li⁺迁移数为0.48，均优于其他HNx-y-z/LiTFSI体系。随后引入3 wt%的聚氧化乙烯与20 wt%的Li

6.4

1.4

0.6

，构建了复合固态电解质。该复合体系显著改善了离子传导与界面稳定性，其室温离子电导率为1.3×10

-5

S/cm，电化学稳定窗口扩展至5.1 V，Li

迁移数增加至0.58。基于该复合电解质组装的全固态电池在65

C、0.5 C条件下，首次放电比容量达到126 mAh/g，200次循环后仍保持121 mAh/g，容量保持率高达96%。本研究为开发兼具高安全性、良好柔性及优异电化学性能的固态电解质提供了新的路径。

Abstract

To develop solid-state electrolytes with high ionic conductivity

a wide electrochemical window

and good stability

this study systematically explores the potential of hydrogenated nitrile butadiene rubber (HNBR) as a matrix in such electrolytes. First

a series of HNBR samples with varying nitrile content

molecular weight

and degree of hydrogenation were successfully prepared using heterogeneous catalytic hydrogenation technology

and the regulatory effects of their structures on electrochemical performance were systematically evaluated. The results indicate that within the ranges of nitrile group content from 35 to 41 wt%

molecular weight from 100

000 to 360

000

and hydrogenation degree from 0 to 97%

the HN41-36W-97%/LiTFSI solid electrolyte

which has a high nitrile content

high hydrogenation degree

and high molecular weight

demonstrates the best overall performance. It has a decomposition voltage of 4.8 V

and a Li

transference number of 0.48

all of which are superior to those of other HNx-y-z/LiTFSI systems. Subsequently

a composite solid-state electrolyte was constructed by introducing 3 wt% polyethylene oxide and 20 wt% Li

6.4

1.4

0.6

. This composite system significantly improved ion transport and interfacial stability

increasing the room-temperature ionic conductivity to 1.3×10

-5

S/cm

widening the electrochemical stability window to 5.1 V

and raising the Li

transference number to 0.58. The all-solid-state battery assembled based on this composite electrolyte achieved an initial discharge specific capacity of 126 mAh/g at 65

C and 0.5 C

maintaining 121 mAh/g

after 200 cycles

with a capacity retention rate as high as 96%. This study provides a novel pathway for developing solid-state electrolytes that combine high safety

good flexibility

and excellent electrochemical performance.

关键词

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