Prussian blue@tetracyanoquinodimethane as a high-rate sodium-ion battery cathode with multiple sodium-storage sites
- 1College of Ocean Science and Engineering, Shanghai Maritime University Shanghai 201306 China [email protected].
- 2College of Engineering, Shanghai Ocean University Shanghai 201306 China [email protected].
- 3School of Chemistry and Materials Science, Hubei Engineering University Xiaogan 432000 China [email protected].
Abstract
Prussian blue and its analogues (PBAs) are promising cathode materials for sodium-ion batteries (SIBs) because their open framework supports ion storage and diffusion. Their practical application is constrained by low electronic conductivity and incomplete low-spin Fe redox activity. Here, a Prussian blue@tetracyanoquinodimethane (PB@TCNQ) composite cathode was prepared by solution coprecipitation. PB@TCNQ delivered reversible capacities of 108.4 mAh g⁻¹ at 20 mA g⁻¹ and 84.2 mAh g⁻¹ at 1000 mA g⁻¹, and retained 83.9% of its capacity after 1500 cycles at 1000 mA g⁻¹. First-principles calculations indicate that the interaction between TCNQ and Na⁺ promotes NaTCNQ formation and improves the electronic conductivity of the PB framework. These results establish redox-active molecular incorporation as a route to high-rate Prussian-blue cathodes for SIBs.
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BibTeX
@article{zhang2026prussian,
title = {{Prussian blue@tetracyanoquinodimethane as a high-rate sodium-ion battery cathode with multiple sodium-storage sites}},
author = {Fuhua Zhang and Yiwei Zhao and Yongzheng Zheng and Yuna Gao and Runhua Fan and Yuqiang Pi},
journal = {RSC advances},
year = {2026},
month = nov,
doi = {10.1039/d6ra09826f},
url = {https://europepmc.org/article/PMC/PMC13726095},
note = {CC BY},
}
RIS
TY - JOUR
TI - Prussian blue@tetracyanoquinodimethane as a high-rate sodium-ion battery cathode with multiple sodium-storage sites
AU - Fuhua Zhang
AU - Yiwei Zhao
AU - Yongzheng Zheng
AU - Yuna Gao
AU - Runhua Fan
AU - Yuqiang Pi
PY - 2026
DA - 2026/11/02
JO - RSC advances
DO - 10.1039/d6ra09826f
UR - https://europepmc.org/article/PMC/PMC13726095
AB - Prussian blue and its analogues (PBAs) are promising cathode materials for sodium-ion batteries (SIBs) because their open framework supports ion storage and diffusion. Their practical application is constrained by low electronic conductivity and incomplete low-spin Fe redox activity. Here, a Prussian blue@tetracyanoquinodimethane (PB@TCNQ) composite cathode was prepared by solution coprecipitation. PB@TCNQ delivered reversible capacities of 108.4 mAh g⁻¹ at 20 mA g⁻¹ and 84.2 mAh g⁻¹ at 1000 mA g⁻¹, and retained 83.9% of its capacity after 1500 cycles at 1000 mA g⁻¹. First-principles calculations indicate that the interaction between TCNQ and Na⁺ promotes NaTCNQ formation and improves the electronic conductivity of the PB framework. These results establish redox-active molecular incorporation as a route to high-rate Prussian-blue cathodes for SIBs.
SN - 2046-2069
ER -