Pearl‐Structure‐Enhanced NASICON Cathode toward Ultrastable Sodium‐Ion Batteries

Advanced Science, Journal Year: 2023, Volume and Issue: 10(19)

Published: April 21, 2023

Abstract Based on the favorable ionic conductivity and structural stability, sodium superionic conductor (NASICON) materials especially utilizing multivalent redox reaction of vanadium are one most promising cathodes in sodium‐ion batteries (SIBs). To further boost their application large‐scale energy storage production, a rational strategy is to tailor with earth‐abundant cheap elements (such as Fe, Mn), reducing cost toxicity vanadium‐based NASICON materials. Here, Na 3.05 V 1.03 Fe 0.97 (PO 4 ) 3 (NVFP) synthesized highly conductive Ketjen Black (KB) by ball‐milling assisted sol‐gel method. The pearl‐like KB branch chains encircle NVFP (p‐NVFP), segregated particles possess promoted overall conductivity, balanced charge, modulated crystal structure during electrochemical progress. p‐NVFP obtains significantly enhanced ion diffusion ability low volume change (2.99%). Meanwhile, it delivers durable cycling performance (87.7% capacity retention over 5000 cycles at 5 C) half cells. Surprisingly, full cells reveal remarkable capability 84.9 mAh g −1 20 C good (capacity decay rate 0.016% per cycle 2 C). modulation provides design superiority others be put into practice.

Language: Английский

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Metal–iodine batteries: achievements, challenges, and future

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 4872 - 4925

Published: Jan. 1, 2023

This review details past attempts, breakthroughs, and computational/characterization methods in developing metal–iodine batteries along with their key innovations, deficiencies, possible solutions.

Language: Английский

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A Multielectron-Reaction and Low-Strain Na_3.5Fe_0.5VCr_0.5(PO₄)₃ Cathode for Na-Ion Batteries

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(9), P. 3666 - 3675

Published: Aug. 4, 2023

Natrium superionic conductor (NASICON)-type phosphates have attracted widespread attention as cathodes for sodium-ion batteries (SIBs) due to their 3D open frameworks facilitating Na+ diffusion, but they are characterized by mediocre energy density or rapid capacity decay. Herein, we delicately design a multielectron-reaction and low-strain Na3.5Fe0.5VCr0.5(PO4)3/C cathode material featuring high working voltage (∼3.43 V), reversible (148.5 mAh g–1), cycling stability (95.1% retention over 2000 cycles). The deviation in the reaction potential of each redox couple (Fe2+/Fe3+, V3+/V4+/V5+, Cr3+/Cr4+) efficaciously alleviates lattice strain accumulation, ensuring small cell volume variation 3.87% during highly charge–discharge processes, confirmed systematic situ/ex situ analyses. Moreover, fast kinetics unexpected Na1-ion (6b site) release/uptake elucidated via multiple electrochemical characterizations theoretical computations. This rational strategy incorporating versatile couples with different roles will broaden horizons high-performance NASICON-type cathodes.

Language: Английский

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High-Energy Room-Temperature Sodium–Sulfur and Sodium–Selenium Batteries for Sustainable Energy Storage

Electrochemical Energy Reviews, Journal Year: 2023, Volume and Issue: 6(1)

Published: June 9, 2023

Abstract Rechargeable room-temperature sodium–sulfur (Na–S) and sodium–selenium (Na–Se) batteries are gaining extensive attention for potential large-scale energy storage applications owing to their low cost high theoretical density. Optimization of electrode materials investigation mechanisms essential achieve density long-term cycling stability Na–S(Se) batteries. Herein, we provide a comprehensive review the recent progress in We elucidate Na improvement strategies battery performance. In particular, discuss advances development components, including high-performance sulfur cathodes, optimized electrolytes, advanced metal anodes modified separators. Combined with current research achievements, this outlines remaining challenges clear directions future practical Graphic

Language: Английский

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Design Strategies and Recent Advancements for Low‐Temperature Aqueous Rechargeable Energy Storage

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(8)

Published: Jan. 8, 2023

Abstract Aqueous rechargeable energy storage (ARES) has received tremendous attention in recent years due to its intrinsic merits of low cost, high safety, and environmental friendliness. However, the relatively higher freezing point conventional aqueous electrolytes results sluggish kinetics inferior ion transport efficiency under temperature, severely restricting their further development practical applications. In order deal with existing issues, design principles develop low‐temperature ARES excellent performance are discussed in‐depth precisely classified, primarily respect electrode modification electrolyte regulation. addition, related studies about systematically comprehensively summarized. Finally, critical bottlenecks, some suggestions, future perspectives also provided, which will help address current challenges ARES. This review is expected deepen fundamental understanding offer guiding suggestions boost

Language: Английский

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Nitrogen doping induced by intrinsic defects of recycled polyethylene terephthalate‐derived carbon nanotubes

SusMat, Journal Year: 2023, Volume and Issue: 3(3), P. 431 - 440

Published: June 1, 2023

Abstract The indiscriminate utilization of nondegradable polyethylene terephthalate (PET)‐based products has triggered serious environmental pollution that to be resolved vigorously. A simple synthesis N‐doped carbon nanotubes from recycled PET (NCNTs r‐PET ) was developed by a nitric acid‐assisted hydrothermal method. Experimental results and theoretical calculations show the intrinsic defects in CNTs would induce N‐doping NH 3 generated acid during process, thus producing NCNTs . life cycle assessment proves method for using as source is more environmentally friendly than conventional chemical vapor deposition acetylene source. As typical application, delivered an impressive sodium storage capacity with ultralong lifespan. This work not only provides new route upcycling waste plastics into valuable carbonaceous materials ecofriendly manner, but also reveals basic understanding mechanism materials.

Language: Английский

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Optimizing Vanadium Redox Reaction in Na₃V₂(PO₄)₃ Cathodes for Sodium-Ion Batteries by the Synergistic Effect of Additional Electrons from Heteroatoms

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(7), P. 9475 - 9485

Published: Feb. 9, 2023

Na3V2(PO4)3 (NVP) is one of the most potential cathode materials for sodium-ion batteries (SIBs), but its actual electrochemical performance limited by defects large electron and ion transfer resistance. Multicomponent design considered an effective method to optimize conductivity NVP electrodes. Therefore, Cr Si are added in form a multielement component Na3V1.9Cr0.1(PO4)2.9(SiO4)0.1 (NVP-CS). It confirmed that 3d electrons beneficial improving increasing average activating V4+/V5+. Theoretical calculations show introduction changes electronic structure V O, thus promoting reaction V3+/V4+ exert higher capacity. Due coordination two elements, lower migration barrier obtained NVP-CS. Specifically, NVP-CS retains advantages single-doped electrodes very well (capacity retention 90% after 300 cycles at 1 C high capacity 94.1 mA h g–1 5 C, compared with only 82.6% 59.4 C). The excellent results can be successfully optimized Si. This work provide some inspiration multicomponent material research materials.

Language: Английский

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Engineering Crystal Growth and Surface Modification of Na₃V₂(PO₄)₂F₃ Cathode for High‐Energy‐Density Sodium‐Ion Batteries

Small, Journal Year: 2023, Volume and Issue: 19(19)

Published: Feb. 17, 2023

Na3 V2 (PO4 )2 F3 (NVPF) is a suitable cathode for sodium-ion batteries owing to its stable structure. However, the large radius of Na+ restricts diffusion kinetics during charging and discharging. Thus, in this study, phosphomolybdic acid (PMA)-assisted hydrothermal method proposed. In process, NVPF morphologies vary from bulk cuboid with varying PMA contents. The optimal channel accelerated transmission obtained by NVPF. With nitrogen-doping carbon, conductivity further enhanced. Combined crystal growth engineering surface modification, nitrogen-doped carbon-covered (c-NVPF@NC) exhibits high initial discharge capacity 121 mAh g-1 at 0.2 C. Coupled commercial hard carbon (CHC) anode, c-NVPF@NC||CHC full battery delivers 118 C, thereby achieving energy density 450 Wh kg-1 . Therefore, work provides novel strategy boosting electrochemical performance modification.

Language: Английский

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Pentafluoro(phenoxy)cyclotriphosphazene Stabilizes Electrode/Electrolyte Interfaces for Sodium‐Ion Pouch Cells of 145 Wh Kg⁻¹

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 22, 2024

Sodium-ion batteries are competitive candidates for large-scale energy storage due to the abundant sodium resource. However, electrode interface in conventional electrolyte is unstable, deteriorating cycle life of cells. Introducing functional additives can generate stable interfaces. Here, pentafluoro(phenoxy)cyclotriphosphazene (FPPN) serves as a additive stabilize interfaces layered oxide cathode and hard carbon anode. The fluorine substituting groups π-π conjugated ─PN─ structure decrease lowest unoccupied molecular orbital increase highest occupied FPPN, respectively, realizing preferential reduction oxidization FPPN on anode simultaneously, which results formation uniform, ultrathin, inorganic-rich solid interlayer interphase. sodium-ion pouch cells 5 Ah capacity rather than coin assembled evaluate effect FPPN. It retain high 4.46 after 1000 cycles, corresponding low decay ratio 0.01% per cycle. cell also achieves density 145 Wh kg

Language: Английский

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Advancements in cathode technology, recycling strategies, and market dynamics: A comprehensive review of sodium ion batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153471 - 153471

Published: June 25, 2024

The rising demand for sodium-ion batteries (SIBs) in commercial applications emphasizes the importance of meeting criteria. Despite their potential, SIBs encounter challenges related to specific energy, cycling life, and power due unique characteristics sodium ions. Design strategies, surface engineering, structural modifications cathode materials have been devised improve electrochemical performance SIBs. In SIBs, energy density primarily depends on choice materials. Common nowadays include transition metal oxides, polyanionic compounds, Prussian blue analogs (PBAs). Enhancing these through targeted overcome limitations is crucial transitioning them from lab-scale practical use. However, there are still some address before can be effectively utilized large-scale storage Recycling spent poses significant economic environmental challenges, particularly compared lithium-ion (LIBs). progress materials, thorough assessments detailed inventory data lacking early stage development restricts recycling underscoring significance end-of-life treatment. Pyrometallurgy hydrometallurgy commonly employed recovery, with pyrometallurgy favored reduced evaporation risks. marketing commercialization trends reflect growing renewable solutions. potential grid-scale storage, expected support expansion infrastructure. overcoming technological reducing costs key SIB commercialization. this regard, startups playing a role advancing technologies applications. collaboration between companies advancements manufacturing facilities driving production, marking substantial towards This paper aims provide comprehensive review current research technology.

Language: Английский

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