High-entropy prussian blue analogs with 3D confinement effect for long-life sodium-ion batteries

Wang, Yichao; Jiang, Ning; Yang, Cheng; Liu, Jiahe; Sun, Shouyu; Wang, Xinyu; Yang, Jianhua; Liu, Yu

doi:10.1039/d3ta07671g

Cited by 16 publications

(1 citation statement)

References 57 publications

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“… 48 In principle, the Mn substitution in the framework, activating the electrochemical activity of NiHCF, provides abundant active sites and facilitates the faradaic redox reactions upon desalination. 49 …”

Section: Resultsmentioning

confidence: 99%

Enhanced redox kinetics of Prussian blue analogues for superior electrochemical deionization performance

Li,

Wang,

Han

et al. 2024

Chem. Sci.

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Section: Resultsmentioning

confidence: 99%

Enhanced redox kinetics of Prussian blue analogues for superior electrochemical deionization performance

Li,

Wang,

Han

et al. 2024

Chem. Sci.

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Ultralong Lifespan Zero‐Cobalt/Nickel Prussian Blue Analogs Cathode Realized by Solid Solution Reaction Sodium Storage Mechanism

Wang,

Jiang,

Liu

et al. 2024

Adv Funct Materials

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Despite their low cost and high specific capacity, the practical use of monoclinic Mn‐based Prussian blue analogs (Mn‐PBAs) is limited by poor cycling stability, primarily due to the structural degradation caused by the multiple phase transitions and Jahn–Teller effect associated with Mn3+ ions throughout the entire cycle. Herein, by synergistic incorporation of low‐cost Cu and Fe into the manganese sites of Mn‐PBAs, the ternary PBAs (T‐PBAs) achieve solid solution reaction of Na+ extraction and insertion, successfully eliminating the inherent multi‐phase transition from the sodium storage mechanism of T‐PBAs. Ex situ analysis and density functional theory calculations are employed to confirm that T‐PBAs consistently maintain a cubic phase with smaller lattice distortion rather than occur in conventional three‐phase transition during the charging and discharging processes, forcefully inhibiting the structural degradation of T‐PBAs. Therefore, the T‐PBAs showcase unprecedented cycling stability at both room temperature (10 000 cycles at 1 A g−1) and −20 °C (over 3000 h, 4200 cycles at 0.2 A g−1 without distinct capacity degradation), More importantly, when paired with commercial hard carbon, the T‐PBAs based sodium‐ion batteries exhibit excellent capacity retention (2000 cycles 76.8%), showcasing their immense potential in practical applications.

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Prussian Blue Analogues for Sodium‐Ion Battery Cathodes: A Review of Mechanistic Insights, Current Challenges, and Future Pathways

Xiao,

Zhao

et al. 2024

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Prussian blue analogues (PBAs) have emerged as highly promising cathode materials for sodium‐ion batteries (SIBs) due to their affordability, facile synthesis, porous framework, and high theoretical capacity. Despite their considerable potential, practical applications of PBAs face significant challenges that limit their performance. This review offers a comprehensive retrospective analysis of PBAs' development history as cathode materials, delving into their reaction mechanisms, including charge compensation and ion diffusion mechanisms. Furthermore, to overcome these challenges, a range of improvement strategies are proposed, encompassing modifications in synthesis techniques and enhancements in structural stability. Finally, the commercial viability of PBAs is examined, alongside discussions on advanced synthesis methods and existing concerns regarding cost and safety, aiming to foster ongoing advancements of PBAs for practical SIBs.

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High-entropy prussian blue analogs with 3D confinement effect for long-life sodium-ion batteries

Abstract: Prussian blue analogs (PBAs) have been regarded as competitive cathode materials for sodium-ion batteries due to their low-cost and easy synthesis. Nevertheless, the practical application of PBAs is limited by...

Cited by 16 publications

References 57 publications

Enhanced redox kinetics of Prussian blue analogues for superior electrochemical deionization performance

Enhanced redox kinetics of Prussian blue analogues for superior electrochemical deionization performance

Ultralong Lifespan Zero‐Cobalt/Nickel Prussian Blue Analogs Cathode Realized by Solid Solution Reaction Sodium Storage Mechanism

Prussian Blue Analogues for Sodium‐Ion Battery Cathodes: A Review of Mechanistic Insights, Current Challenges, and Future Pathways

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