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This study aims to enhance the redox activity and structural stability of copper hexacyanoferrate for aqueous proton batteries through Co 2+ doping.

Coordination Environment Modulation of Copper Hexacyanoferrate with High Redox Activity for High-Performance Aqueous Proton Batteries

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Randomized trial demonstrates improved redox activity and stability in copper hexacyanoferrate cathodes, suggesting enhanced battery performance.

This study aims to enhance the redox activity and structural stability of copper hexacyanoferrate for aqueous proton batteries through Co 2+ doping.
Synthesis of CuCoHCF-1 using Co 2+ doping strategy
Assessment of specific discharge capacity and cycling stability
Evaluation of electrochemical performance under various conditions.
CuCoHCF-1 achieves a specific discharge capacity of 84.4 mAh·g –1 at 0.1 A·g –1
Cycling stability shows 93.1% capacity retention after 40,000 cycles at 5 A·g –1
Structural stability is enhanced due to optimized local coordination environment.

Wang et al. (2026) studied this question.

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Randomized trial demonstrates improved redox activity and stability in copper hexacyanoferrate cathodes, suggesting enhanced battery performance.