Bottlenecks in the cyclic stability of Prussian blue-based materials and performance optimization pathways for supercapacitor applications

WEI Yuanjie; LIANG Jing; WU Wei

doi:10.19799/j.cnki.2095-4239.2026.0026

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Bottlenecks in the cyclic stability of Prussian blue-based materials and performance optimization pathways for supercapacitor applications

Special Issue of Key Materials and Devices of Supercapacitors | 更新时间：2026-07-01

- Bottlenecks in the cyclic stability of Prussian blue-based materials and performance optimization pathways for supercapacitor applications
- Energy Storage Science and Technology Vol. 15, Issue 5, Pages: 1848-1861(2026)
- 作者机构：
  
  武汉大学物理科学与技术学院，湖北武汉 430072
- 作者简介：
- 基金信息：
- DOI：10.19799/j.cnki.2095-4239.2026.0026
  CLC： TB 383
- Received：09 January 2026，
  
  Revised：2026-02-03，
  
  Published：28 May 2026
- 稿件说明：
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魏媛杰, 梁静, 吴伟. 普鲁士蓝基材料循环稳定性的瓶颈问题及在超级电容器应用中的性能优化路径[J]. 储能科学与技术, 2026, 15(5): 1848-1861.

WEI Yuanjie, LIANG Jing, WU Wei. Bottlenecks in the cyclic stability of Prussian blue-based materials and performance optimization pathways for supercapacitor applications[J]. Energy Storage Science and Technology, 2026, 15(5): 1848-1861.
魏媛杰, 梁静, 吴伟. 普鲁士蓝基材料循环稳定性的瓶颈问题及在超级电容器应用中的性能优化路径[J]. 储能科学与技术, 2026, 15(5): 1848-1861. DOI： 10.19799/j.cnki.2095-4239.2026.0026.

WEI Yuanjie, LIANG Jing, WU Wei. Bottlenecks in the cyclic stability of Prussian blue-based materials and performance optimization pathways for supercapacitor applications[J]. Energy Storage Science and Technology, 2026, 15(5): 1848-1861. DOI： 10.19799/j.cnki.2095-4239.2026.0026.

摘要

超级电容器凭借其高功率密度和长循环寿命，在新能源与便携式储能等领域扮演着不可替代的角色。普鲁士蓝类似物因具备开放框架结构、丰富的氧化还原活性位点、较高的理论容量，以及成本低廉、易于制备等优势，被认为是一类极具应用前景的电极材料。然而，该类材料在实际应用过程中普遍表现出较差的循环稳定性，其理论性能与长期循环寿命之间仍存在明显差距。本文首先介绍了普鲁士蓝材料在超级电容器中的储能机制，并阐述了评估其循环稳定性优劣的主要依据。在此基础上，系统归纳了造成普鲁士蓝类似物电极材料循环性能衰减的关键因素，主要包括反复离子脱嵌引发的晶格畸变与相变、过渡金属离子在电化学反应过程中的溶解以及材料结晶水或晶格空位诱发的副反应与结构形变，进一步综述了提升其结构稳定性的主要策略，例如晶格调控、界面改性、电解液体系优化及反应条件调整等，并对相关机制及研究进展进行了阐释。最后，对人工智能预测与原位表征技术等未来研究方向作出展望，指出这些途径有望突破材料性能瓶颈，为开发高性能普鲁士蓝基储能器件提供有力支撑。

Abstract

Supercapacitors are energy storage devices that integrate high power density with extended cycle life

making them central to applications in new energy vehicles

portable electronics

and smart grids. Prussian blue analogues

with their distinctive open framework

adjustable redox-active sites

and high theoretical specific capacity

stand out as particularly promising electrode materials for these devices

as the three-dimensional ion channels in these compounds enable swift insertion and extraction of electrolyte ions

yielding exceptional rate performance. They are also cost-effective

owing to the abundance of raw materials and relatively simple synthesis routes. Despite these advantages

their widespread use is hampered by insufficient cycling stability

where a considerable gap exists between theoretical potential and long-term operational durability. This fundamental limitation arises mainly from lattice distortions and phase transitions triggered by repeated ion intercalation and deintercalation during charge-discharge cycles

dissolution and leaching of transition metal ions

as well as side reactions and structural deterioration caused by inherent interstitial water and lattice defects. This contribution methodically examines these three principal degradation mechanisms and surveys recent advances aimed at improving structural integrity through lattice engineering

interface modification

and electrolyte design. The paper concludes by identifying prospective research avenues

such as artificial intelligence-assisted prediction and the deployment of in-situ characterization methods

to inform the future development of high-performance energy storage systems based on Prussian blue materials.

关键词

Keywords

references

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