Vanadium-Iron Prussian Blue Cathode

Low-Temperature High-Rate

A dissolution-resistant Prussian blue cathode in high-concentration aqueous electrolyte, delivering high-rate capability and low-temperature adaptability.

Fang, Luan · Jingying, Wang · Anqi, Liu · Zhuo, Wang · Song-Lin, Tian · Xu, Tianhao · Wang, Xiaotong · Wang, Hairui · Nie, Ping · Limin, Chang

Journal of Energy Storage 2026

Specifications

Reversible capacity

{'zh': '65.06', 'en': '65.06'} mAh g−1

Energy density

{'zh': '39.04', 'en': '39.04'} Wh kg−1

Cycle number

{'zh': '10000', 'en': '10000'}

Low operating temperature

{'zh': '−10', 'en': '−10'} °C

Advantages

High capacity at high rate

Delivers a reversible capacity of 65.06 mAh g−1 at 12 A g−1, enabled by fast ion transport.

Long cycle life

Stable cycling for 10,000 cycles at 5 A g−1 is achieved due to the dissolution-resistant structure.

Low-temperature operation

Operates at −10°C, extending the temperature range of the battery.

Applications

• Sodium-ion batteries：The cathode design can be adapted for sodium-ion batteries.
• Electrochemistry and energy storage：Provides a high-rate, long-cycling energy storage design.
• Low-temperature energy storage：The battery works at −10°C, suitable for low-temperature storage.