Micron-sized single-crystal cathodes for sodium-ion batteries

Pamidi, Venkat; Trivedi, Shivam; Behara, Santosh; Fichtner, Maximilian; Reddy, M. Anji

doi:10.1016/j.isci.2022.104205

Cited by 19 publications

(20 citation statements)

References 90 publications

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“…27 Although the dense surface of SC-NFM can alleviate particle breakage and side reactions, it also leads to less electrolyte penetration, resulting in limited kinetics. 28 At low temperatures, both the cycle stabilities of PC-NFM and SC-NFM are simultaneously improved. The capacity retention rates of SC-NFM and PC-NFM are 95.9 and 93.6%, respectively, after 200 cycles at −10 °C (Figure 6b).…”

Section: Resultsmentioning

confidence: 98%

“…SC-NFM can eliminate the mismatched stress formed in PC-NFM due to the differential strain of anisotropic grains . Although the dense surface of SC-NFM can alleviate particle breakage and side reactions, it also leads to less electrolyte penetration, resulting in limited kinetics . At low temperatures, both the cycle stabilities of PC-NFM and SC-NFM are simultaneously improved.…”

Section: Resultsmentioning

confidence: 99%

“…Constructing composited phases and doping have been widely reported to mitigate the mechanical degradation induced by electrochemical reactions during cycling. − Furthermore, some studies have confirmed that a reasonable geometric structure is also very important for improving alkali ion dynamics . For instance, preparing a single crystal with a group of isolated primary particles larger than 1 μm in size is an effective method to alleviate the volume stress caused by phase transformation and reduce the grain cracking during the cycling of layered oxide cathodes for SIBs. − …”

Section: Introductionmentioning

confidence: 99%

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Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi_1/3Fe_1/3Mn_1/3O₂ for Sodium-Ion Batteries

Yang,

Fan,

Liu

et al. 2024

Energy Fuels

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While multitransition-metal layered oxides in the form of micrometer-sized single crystals and polycrystalline aggregates show great promise as affordable cathodes for sodiumion batteries, the relationship between a typical preferential facet as well as morphological domination and electrochemical performance in both forms remains unclear. In this regard, herein, two models of layered O3-type NaNi 1/3 Fe 1/3 Mn 1/3 O 2 (NFM) materials with single-crystalline and polycrystalline characteristics were prepared. Based on in situ X-ray diffraction (XRD) characterization and electrochemical investigations, the common dominated (003) plane in single-crystalline NFM is proved to be an unfavorable ionic accessing plane but can alleviate the proportion of exposed edge planes and strengthen the domains to further improve the cycle life and humid air stability, while the polycrystalline NFM cathodes deliver a superior ionic transportation dynamics. Consequently, the polycrystalline NFM can achieve a high rate capability, with a discharge capacity of 110 mAh g −1 at 10C at room temperature, and a discharge capacity of 89 mAh g −1 at 1C even at −20 °C. Last but not the least, good cyclability and processability can be observed in the single-crystalline NFM by realizing a capacity retention of 85.7% after 350 cycles and a capacity retention of 91% after 100 cycles at 1C, even after long-term humid exposure.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi_1/3Fe_1/3Mn_1/3O₂ for Sodium-Ion Batteries

Yang,

Fan,

Liu

et al. 2024

Energy Fuels

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Section: Single-crystal Particlesmentioning

confidence: 99%

“…In addition, since selected area electron diffraction analysis is confined to a narrow area, it is not suitable to prove that micron/submicron particles are single crystals. [ 286 ] Therefore, it is recommended that electron backscatter diffraction analysis is conducted as this method can detect grain boundaries and provide direct evidence for the synthesis of single crystals. Although the research on single‐crystal cathode materials for SIBs is still in its early stages and the cycling stability of these materials is slightly inferior to some modified polycrystalline cathodes, [ 14,117,158 ] it is proposed that with further research efforts, the electrochemical performance of single‐crystal cathodes will be significantly improved soon.…”

Section: O3‐tye Layered Oxide Cathodesmentioning

confidence: 99%

Practical Cathodes for Sodium‐Ion Batteries: Who Will Take The Crown?

Liang,

Hwang,

Sun

2023

Advanced Energy Materials

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In recent decades, sodium‐ion batteries (SIBs) have received increasing attention because they offer cost and safety advantages and avoid the challenges related to limited lithium/cobalt/nickel resources and environmental pollution. Because the sodium storage performance and production cost of SIBs are dominated by the cathode performance, developing cathode materials with large‐scale production capacity is the key to achieving commercial applications of SIBs. Therefore, developing host materials with high energy density, long cycling life, low production cost, and high chemical/environmental stability is crucial for implementing advanced SIBs. Among the developed cathode materials for SIBs, O3‐type sodiated transition‐metal oxides have attracted extensive attention owing to their simple synthesis methods, high theoretical specific capacity, and sufficient Na content. However, the relatively large Na‐ion radius leads to sluggish diffusion kinetics and inevitable complex phase transitions during the deintercalation/intercalation process, resulting in poor rate capability and cycling stability. Therefore, this review comprehensively summarizes the research progress and modification strategies for O3‐type cathodes, including the component design, surface modification, and optimization of synthesis methods. This work aims to guide the development of commercial layered oxides and provide technical support for the next generation of energy‐storage systems.

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Toward the High‐Voltage Stability of Layered Oxide Cathodes for Sodium‐Ion Batteries: Challenges, Progress, and Perspectives

Chen,

Deng,

Kong

et al. 2024

Advanced Materials

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Sodium‐ion batteries (SIBs) have garnered significant attention as ideal candidates for large‐scale energy storage due to their notable advantages in terms of resource availability and cost‐effectiveness. However, there remains a substantial energy density gap between SIBs and commercially available lithium‐ion batteries (LIBs), posing challenges to meeting the requirements of practical applications. The fabrication of high‐energy cathodes has emerged as an efficient approach to enhance the energy density of SIBs, which commonly requires cathodes operating in high‐voltage regions. Layered oxide cathodes (LOCs), with low cost, facile synthesis, and high theoretical specific capacity, have emerged as one of the most promising candidates for commercial applications. However, LOCs encounter significant challenges when operated in high‐voltage regions such as irreversible phase transitions, migration and dissolution of metal cations, loss of reactive oxygen, and the occurrence of serious interfacial parasitic reactions. These issues ultimately result in severe degradation in battery performance. This review aims to shed light on the key challenges and failure mechanisms encountered by LOCs when operated in high‐voltage regions. Additionally, the corresponding strategies for improving the high‐voltage stability of LOCs are comprehensively summarized. By providing fundamental insights and valuable perspectives, this review aims to contribute to the advancement of high‐energy SIBs.This article is protected by copyright. All rights reserved

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Micron-sized single-crystal cathodes for sodium-ion batteries

Cited by 19 publications

References 90 publications

Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi_1/3Fe_1/3Mn_1/3O₂ for Sodium-Ion Batteries

Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi_1/3Fe_1/3Mn_1/3O₂ for Sodium-Ion Batteries

Practical Cathodes for Sodium‐Ion Batteries: Who Will Take The Crown?

Toward the High‐Voltage Stability of Layered Oxide Cathodes for Sodium‐Ion Batteries: Challenges, Progress, and Perspectives

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Micron-sized single-crystal cathodes for sodium-ion batteries

Cited by 19 publications

References 90 publications

Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi1/3Fe1/3Mn1/3O2 for Sodium-Ion Batteries

Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi1/3Fe1/3Mn1/3O2 for Sodium-Ion Batteries

Practical Cathodes for Sodium‐Ion Batteries: Who Will Take The Crown?

Toward the High‐Voltage Stability of Layered Oxide Cathodes for Sodium‐Ion Batteries: Challenges, Progress, and Perspectives

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Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi_1/3Fe_1/3Mn_1/3O₂ for Sodium-Ion Batteries

Insights into the Facet and Morphological Domination on the Electrochemical Performance of Layered NaNi_1/3Fe_1/3Mn_1/3O₂ for Sodium-Ion Batteries