Leveraging Entropy and Crystal Structure Engineering in Prussian Blue Analogue Cathodes for Advancing Sodium-Ion Batteries

ACS Nano, Год журнала: 2024, Номер 18(35), С. 24441 - 24457

Опубликована: Авг. 22, 2024

The synergistic engineering of chemical complexity and crystal structures has been applied to Prussian blue analogue (PBA) cathodes in this work. More precisely, the high-entropy concept successfully introduced into two structure types identical composition, namely, cubic monoclinic. Through utilization a variety complementary characterization techniques, comprehensive investigation electrochemical behavior monoclinic PBAs conducted, providing nuanced insights. implementation exhibits crucial selectivity toward intrinsic structure. Specifically, while overall cycling stability both cathode systems is significantly improved, interplay entropy proves particularly significant. After optimization, PBA demonstrates structural advantages, showcasing good reversibility, minimal capacity loss, high thermal stability, unparalleled endurance even under harsh conditions (high specific current temperature).

Язык: Английский

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Prussian Blue Nanoplates for Potassium Ion Battery Cathode with High Capacity and High Energy Density

Batteries & Supercaps, Год журнала: 2024, Номер 7(6)

Опубликована: Март 21, 2024

Abstract Prussian blue analogues (PBAs) represent as a class of materials with an open framework structure and have been intensively explored the potential active for alkaline‐ion batteries. Here, we present synthesis nanoplates designed use high performance cathode in potassium‐ion were synthesized through facile solution precipitation route using highly concentrated potassium citrate solution. The potassium‐rich environment during facilitated horizontal growth crystals, yielding nanoplates. resultant exhibited significantly larger particle size 600 nm reduced specific surface area 6.8 m 2 g −1 , compared to conventionally hexahedrons. Half‐cell tests demonstrated that gravimetric capacity 152.5 mAh nominal voltage 3.952 V at C‐rate 0.1 C, energy density 602.7 Wh kg . Cycling cycling stability material, maintaining 122.7 3.923 after 200 cycles 0.2 C. In full‐cell configuration graphite anodes, changed from 134.1 108.9 100 demonstrating good stability. This work provides new insight into electrochemical properties highlights their high‐performance

Язык: Английский

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Degradation Mechanisms of Prussian Blue Analogues and State-of-the-Art Approaches for Stability Optimization: A Review

The Journal of Physical Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

Язык: Английский

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Vacancy Remediation in Prussian Blue Analogs for High‐Performance Sodium and Potassium Ion Batteries

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 20, 2024

Abstract Sodium‐ion batteries (SIBs) and potassium‐ion (PIBs) have enormous potential for large‐scale energy storage due to their cost‐effectiveness, safety, environmental compatibility. Developing high‐capacity highly reliable cathode materials is key advancing the commercialization of SIBs PIBs. Low‐cost Prussian blue analogs (PBAs), with open 3D framework ease synthesis, are preferred applications. However, unique growth mechanism PBAs introduces numerous Fe(CN) 6 vacancies, which compromise structural integrity result in capacity decay collapse during long‐term electrochemical cycling. Additionally, cracking can cause dissolution transition metal (TM) ions, undesirable interfacial reactions, gas generation, shorten battery's lifespan raise safety concerns. In this review, mechanisms vacancy formation first clarified, providing a comprehensive overview current strategies remediation based on both bottom‐up top‐down approaches. It then elucidate how optimized enhance lattice stability, suppress TM mitigate generation. Finally, it discussed future research directions provide perspectives further development high‐performance

Язык: Английский

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Na2-Mn[Fe(CN)6 ] Prussian Blue Analog Cathodes for Na-ion Batteries – from fundamentals to practical demonstration

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104118 - 104118

Опубликована: Фев. 1, 2025

Язык: Английский

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Mechanisms and Mitigation Strategies of Gas Generation in Sodium-Ion Batteries

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Март 10, 2025

Abstract The transition to renewable energy sources has elevated the importance of SIBs (SIBs) as cost-effective alternatives lithium-ion batteries (LIBs) for large-scale storage. This review examines mechanisms gas generation in SIBs, identifying from cathode materials, anode and electrolytes, which pose safety risks like swelling, leakage, explosions. Gases such CO 2 , H O primarily arise instability side reactions between electrode electrolyte, electrolyte decomposition under high temperatures or voltages. Enhanced mitigation strategies, encompassing design, buffer layer construction, material optimization, are deliberated upon. Accordingly, subsequent research endeavors should prioritize long-term high-precision detection bolster performance thereby fortifying their commercial viability furnishing dependable solutions storage electric vehicles.

Язык: Английский

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Oxide Acidity Modulates Structural Transformations in Hydrogen Titanates during Electrochemical Li-Ion Insertion

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(42), С. 28795 - 28808

Опубликована: Окт. 8, 2024

Hydrogen titanates (HTOs) form a diverse group of metastable, layered titanium oxides with an interlayer containing both water molecules and structural protons. We investigated how the chemistry this environment influenced electrochemical Li

Язык: Английский

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Building Robust Manganese Hexacyanoferrate Cathode for Long‐Cycle‐Life Sodium‐Ion Batteries

Small, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 16, 2024

Abstract Manganese Hexacyanoferrate (Mn─HCF) is a preferred cathode material for sodium‐ion batteries used in large‐scale energy storage. However, the inherent vacancies and presence of H 2 O within imperfect crystal structure Mn─HCF lead to failure interface when as cathode. Addressing challenge constructing stable an urgent scientific problem that needs be solved enhance performance lifespan these batteries. In this review, first introduced, explaining formation mechanism exploring various ways which molecules can present structure. Then comprehensively summarize mechanisms interfacial Mn─HCF, highlighting key factors contributing issues. Additionally, eight modification strategies designed address are encapsulated, including vacancy regulation, transition metal substitution, high entropy, pillar effect, interstitial removal, surface coating, repair, electrolyte interphase reinforcement. This comprehensive review current research advances on aims provide valuable guidance direction addressing existing challenges their application SIBs.

Язык: Английский

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Multiple strategies from apparatus to synthetic process toward high-performance spherical manganese hexacyanoferrate for sodium-ion batteries

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157785 - 157785

Опубликована: Ноя. 1, 2024

Язык: Английский

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