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

Small, Journal Year: 2024, Volume and Issue: 20(35)

Published: April 29, 2024

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 considerable potential, practical applications of PBAs face significant challenges that limit performance. This review offers a comprehensive retrospective analysis PBAs' development history materials, delving into reaction mechanisms, including charge compensation ion diffusion mechanisms. Furthermore, overcome these challenges, range improvement strategies are proposed, encompassing modifications in synthesis techniques enhancements structural stability. Finally, the commercial viability is examined, alongside discussions on advanced methods existing concerns regarding cost safety, aiming foster ongoing advancements SIBs.

Language: Английский

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Optimization Strategies of Na3V2(PO4)3 Cathode Materials for Sodium-Ion Batteries

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Oct. 4, 2024

Abstract Na 3 V 2 (PO 4 ) (NVP) has garnered great attentions as a prospective cathode material for sodium-ion batteries (SIBs) by virtue of its decent theoretical capacity, superior ion conductivity and high structural stability. However, the inherently poor electronic sluggish diffusion kinetics NVP give rise to inferior rate performance unsatisfactory energy density, which strictly confine further application in SIBs. Thus, it is significance boost sodium storage material. Up now, many methods have been developed optimize electrochemical In this review, latest advances optimization strategies improving are well summarized discussed, including carbon coating or modification, foreign-ion doping substitution nanostructure morphology design. The highlighted, involving Na, V, PO 3− sites, include single-site doping, multiple-site single-ion multiple-ion so on. Furthermore, challenges prospects high-performance also put forward. It believed that review can provide useful reference designing developing toward large-scale

Language: Английский

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Optimizing Fe in Mn-based Prussian blue analogs with dual redox-active sites to enhance operating voltage and durability in Zn-ion batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 506, P. 160308 - 160308

Published: Jan. 1, 2025

Language: Английский

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In Situ Balanced Synthesis of High-Activity Low-Spin Iron Cathode Prussian Blue for Enhanced Sodium-Ion Storage

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

The growing market for sodium-ion batteries has stimulated interest in research on Prussian blue-type cathode materials. Iron hexacyanoferrate (FeHCF) is considered a desirable cathode, but the incomplete electrochemical property of its low-spin iron sites hinders further practical application. In this paper, carboxymethyl cellulose demonstrated to have an appropriate binding energy through DFT calculations, synthesize blue situ, balance Fe3+ and water FeHCF, introduce FeIII vacancies activate Fe sites. Thus, at 1 C rate, it achieves initial discharge capacity 154.7 mAh g–1 with density 470.8 Wh kg–1. retention 70.2% after 4000 cycles rate 100 C. This work provides simpler way develop more cost-effective, faster, durable materials storage.

Language: Английский

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Cation Configuration and Structural Degradation of Layered Transition Metal Oxides in Sodium-Ion Batteries

ACS Nano, Journal Year: 2024, Volume and Issue: 18(29), P. 18834 - 18851

Published: July 12, 2024

Given the pressing depletion of lithium resources, sodium-ion batteries (SIBs) stand out as a cost-effective alternative for energy storage solutions in near future. Layered transition metal oxides (LTMOs) emerge leading cathode materials SIBs due to their superior specific capacities and abundant raw materials. Nonetheless, achieving long-term stability LTMOs remains challenge inevitable structural degradation during charge–discharge cycles. The complexity diversity cation configurations/superstructures within layers (TMO2) further complicate understanding newcomers. Therefore, it is critical summarize discuss factors available strategies enhancing LTMOs' stability. In this review, cationic configurations TMO2 are introduced from crystallographic perspective. It then identifies examines four key responsible decay, alongside impacts various modification strategies. Finally, more effective practical research approaches investigating have been proposed. work aims enhance comprehension deterioration facilitate substantial improvement cycle life density.

Language: Английский

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Advanced Bismuth-Based Anode Materials for Efficient Potassium Storage: Structural Features, Storage Mechanisms and Modification Strategies

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Jan. 31, 2025

Abstract Potassium-ion batteries (PIBs) are considered as a promising energy storage system owing to its abundant potassium resources. As an important part of the battery composition, anode materials play vital role in future development PIBs. Bismuth-based demonstrate great potential for storing ions (K + ) due their layered structure, high theoretical capacity based on alloying reaction mechanism, and safe operating voltage. However, large radius K inevitably induces severe volume expansion depotassiation/potassiation, sluggish kinetics insertion/extraction limits further development. Herein, we summarize strategies used improve properties various types introduce recent advances design fabrication favorable structural features bismuth-based materials. Firstly, this review analyzes working mechanism advantages disadvantages storage. Then, this, manuscript focuses summarizing modification including morphological design, compositing with other materials, electrolyte optimization, elucidating modifications enhancing performance. Finally, outline current challenges PIBs put forward some prospects be verified.

Language: Английский

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Counterion Lewis Acidity Determines the Rate of Hexafluorophosphate Hydrolysis in Nonaqueous Battery Electrolytes

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

The decomposition of LiPF6 in nonaqueous battery electrolytes is a well-studied, deleterious process that leads to hydrofluoric acid (HF) driven transition metal dissolution at the positive electrode and gas production (H2) anode, often attributed inherent moisture sensitivity hexafluorophosphate anion. In this work, we use situ nuclear magnetic resonance (NMR) spectroscopy demonstrate rate PF6- hydrolysis significantly decreases Na K systems, where Lewis acidity cation dictates according Li+ > Na+ K+. Despite remarkable stability electrolytes, show they are still susceptible presence protons, which can catalyze breakdown PF6-, indicating these chemistries not immune from when paired with solvent/cathode combinations generate H+ high voltage. Quantitative multinuclear multidimensional NMR decomposed shows after long-term degradation, systems contain HF, HPO2F2, H2PO3F as well variety defluorinated byproducts, such organophosphates phosphonates, structurally similar herbicides/insecticides may pose health environmental risks. Taken together, results have important implications for Na- K-ion batteries hazardous harmful byproducts like soluble metals, organophosphates, phosphonates be greatly reduced through cell design. Our also suggest next-generation present pathway safer lower quantities flammable gases, H2, if properly engineered.

Language: Английский

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Advanced cathode materials for metal ion hybrid capacitors: Structure and mechanisms

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 517, P. 216018 - 216018

Published: June 18, 2024

Language: Английский

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High Entropy Induced Local Charge Enhancement Promotes Frank–Van der Merwe Growth for Dendrite‐Free Potassium Metal Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 13, 2024

Abstract Potassium metal batteries (PMBs) are promising for next‐generation energy storage. However, the high reactivity of anode causes instability in solid electrolyte interface (SEI), resulting Volmer‐Weber (V‐W) type deposition. To achieve uniform Frank‐van der Merwe (F‐M) deposition, entropy alloy nanoparticles designed (HEA NPs) with equimolar ratios Mn, Fe, Co, Cu, and Ni to enhance substrate‐K interface. HEA NPs K affinity N‐doped nanocarbon fiber substrate (N‐PCNF) maximize ion electron transport efficiency. The dendrite‐free horizontal growth confirmed through Operando X‐ray diffraction (XRD) optical microscopy (OM). Consequently, asymmetric cell exhibits ultra‐long cycling stability 2350 hours at a current density 8 mA cm −2 . full composed molten diffusion into decorated N‐PCNF perylene‐3,4,9,10‐tetracarboxylic dianhydride cathode (HEA‐N‐PCNF‐K||PTCDA) delivers an 331 W h kg −1 remains stable over 2000 cycles. This study offers pathway innovative PMBs designs broad application prospects.

Language: Английский

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Modification of Prussian blue analogues as high-performance cathodes for sodium-ion batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156410 - 156410

Published: Oct. 1, 2024

Language: Английский

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