Construction of Cu-Zn Co-doped layered materials for sodium-ion batteries with high cycle stability

Dong, Xiping; Wang, Xuan; Lu, Zhixiu; Shi, Qinhao; Yang, Zhengyi; Xuan, Yi; Feng, Wuliang; Zou, Xingli; Liu, Yang; Zhao, Yufeng

doi:10.1016/j.cclet.2023.108605

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…Selected Nyquist plots for these samples are presented in Figure 5C [37] . These results indicate that the resistances originating from the solid electrolyte interphase (SEI) layer (R SEI ) and charge transfer (R ct ) in 0.46-AFR-HC electrodes are both lower than those in 0.90-AFR-HC and 1.80-AFR-HC electrodes [36,39,41] , that is, 2.6 Ω vs. 3.9 Ω vs. 7.3 Ω for R SEI and 3.6 Ω vs. 7.9 Ω vs. 11.8 Ω for R ct , respectively [Supplementary Table 8].…”

Section: Sodium Storage Behavior Exploration and The Microstructural ...mentioning

confidence: 92%

“…Such superior electrochemical performance could be derived from the well-regulated 0.46-AFR-HC microstructure. To gain insight into the interfacial reaction kinetics of 0.46-AFR-HC, 0.90-AFR-HC, and 1.80-AFR-HC electrodes, the EIS measurements were performed [37,41] . Selected Nyquist plots for these samples are presented in Figure 5C [37] .…”

Section: Sodium Storage Behavior Exploration and The Microstructural ...mentioning

confidence: 99%

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Modulating the graphitic domains of hard carbons via tuning resin crosslinking degree to achieve high rate and stable sodium storage

Lu,

Yin,

et al. 2024

Energy Mater

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Sodium-ion batteries (SIBs) are regarded as an outstanding alternative to lithium-ion batteries (LIBs) due to abundant sodium sources and their similar chemistry. As a most promising anode of SIBs, hard carbons (HCs) receive extensive attention because of their low potential and low cost, but their rational design for commercial SIBs is restricted by their variable and complicated microstructure, which is analogous to that of graphite in LIBs. Herein, a series of controllable HC materials derived from 3-aminophenol formaldehyde resin (AFR) were designed and fabricated. We discover that the optimized HC features expanded graphite regions, highly developed nanopores, and reduced defect content, contributing to the enhanced Na+ storage. This optimization is achieved by adjusting the resin crosslinking degree of the precursor. Specifically, a resin precursor with a higher crosslinking degree can produce HC with a larger interlayer distance, relatively higher crystallinity, and a lower specific surface area. Encouragingly, the as-optimized AFR-HC electrode manifests superior electrochemical performance in the aspect of high capacity (383 mAh·g-1 at 0.05 A·g-1), better rate capability (140 mAh·g-1 at 20 A·g-1), and high initial coulombic efficiency (82%) than other contrast samples. Moreover, the as-constructed full cell coupled with a Na3V2(PO4)3 cathode shows an energy density of 250 Wh·kg-1. Together with the simple synthesis, cost-efficiency of the precursors and superior electrochemical performance, AFR-HCs are promising for the commercial application.

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Section: Sodium Storage Behavior Exploration and The Microstructural ...mentioning

confidence: 92%

Section: Sodium Storage Behavior Exploration and The Microstructural ...mentioning

confidence: 99%

Modulating the graphitic domains of hard carbons via tuning resin crosslinking degree to achieve high rate and stable sodium storage

Lu,

Yin,

et al. 2024

Energy Mater

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“…Many investigations indicated the partial substitution of Ni 2+ and Mn 4+ by active and inactive ions (e.g., Zn 2+ , Mg 2+ , Cu 2+ , Ti 4+ , Li + , Fe 3+ , etc.) can suppress/alleviate the phase transitions at high voltage and improve the cycling performance, but with a reduction of available capacity. − …”

Section: Introductionmentioning

confidence: 99%

Component Regulatory Strategy for Advanced Biphasic Sodium Layered Oxide Cathodes

Hu,

Guo,

Gao

et al. 2023

ACS Appl. Energy Mater.

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P2/O3 biphasic sodium layered oxides that combine the advantages of two crystal structures are promising cathodes for Na-ion batteries. However, the compositional optimization and structural regulation of P2/O3 biphasic layered oxides were usually performed by using a "trial and error" mode that adjusts the components and synthetic temperature step by step, which limited the rapid development of P2/O3 biphasic layered oxides. Inspired by the rich compositional diversity and controllable electrochemical performance of sodium layered oxides, we proposed a rational strategy for designing the components of P2/O3 biphasic layered oxides with excellent properties. Specifically, we used the chemical formulas P2-type Na 0.7 Ni 0.25 Cu 0.05 Fe 0.1 Mn 0.35 Ti 0.25 O 2 and O3-type Na 0.94 Ni 0.29 Cu 0.1 Fe 0.16 Mn 0.3 Ti 0.15 O 2 as the two initial values. Then, by combining two initial values with different mol ratios, we can obtain the components of biphasic layered oxides. As a result, all prepared P2/O3 biphasic layered oxides with different phase ratio showed excellent electrochemical performances including high specific capacity (more than 120 mAh/g), superior cycling stability (more than the capacity retention of 91% after 500 cycles), and excellent rate capability (about the capacity retention of 50% at 8C rate). Ex situ Xray diffraction measurements indicated P2/O3 biphasic layered oxides showed a reversible phase evolution of P2/O3−P2/P3−P2/ O3 upon Na deintercalation/intercalation. This work provided a feasible approach to designing high-performance biphasic layered oxide cathodes for Na-ion batteries.

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Zinc doped P2-type layered cathode for high-voltage and long-life sodium ion batteries: impacts of calcination temperature and cooling methods

Yuan,

Yang,

Huang

et al. 2023

J Solid State Electrochem

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Construction of Cu-Zn Co-doped layered materials for sodium-ion batteries with high cycle stability

Cited by 5 publications

References 38 publications

Modulating the graphitic domains of hard carbons via tuning resin crosslinking degree to achieve high rate and stable sodium storage

Modulating the graphitic domains of hard carbons via tuning resin crosslinking degree to achieve high rate and stable sodium storage

Component Regulatory Strategy for Advanced Biphasic Sodium Layered Oxide Cathodes

Zinc doped P2-type layered cathode for high-voltage and long-life sodium ion batteries: impacts of calcination temperature and cooling methods

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