Safe electrolyte for long-cycling alkali-ion batteries

Yi, Xianhui; Fu, Hongwei; Rao, Apparao M.; Zhang, Yingjiao; Zhou, Jiang; Wang, Chengxin; Lu, Bingan

doi:10.1038/s41893-024-01275-0

Cited by 83 publications

(22 citation statements)

References 59 publications

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“…Half-cells were assembled to investigate the electrochemistry performance of NNMCZO of different sizes. It is worth noticing that the electrolyte has a great influence on the battery performance. , Herein, in order to be consistent with the previous work, 1.0 M NaClO 4 in propylene carbonate with 5 vol % fluoroethylene carbonate was used as the electrolyte. The charge/discharge curves of NNMCZO-7 μm, NNMCZO-10 μm, and NNMCZO-15 μm at 0.1 C (1 C = 173 mA g –1 ) are shown in Figure a.…”

Section: Resultsmentioning

confidence: 69%

Constructing a Size-Controllable Spherical P2-Type Layered Oxides Cathode That Achieves Practicable Sodium-Ion Batteries

Yin,

Tao,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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P2-type layered metal oxides are regarded as promising cathode materials for sodium-ion batteries due to their high voltage platform and rapid Na+ diffusion kinetics. However, limited capacity and unfavorable cycling stability resulting from inevitable phase transformation and detrimental structure collapse hinder their future application. Herein, based on P2-type Na0.67Ni0.18Mn0.67Cu0.1Zn0.05O2, we synthesized a series of secondary spherical morphology cathodes with different radii derived from controlling precursors prepared by a coprecipitation method, which can be promoted to large-scale production. Consequently, the synthesized materials possessed a high tap density of 1.52 g cm–3 and a compacted density of 3.2 g cm–3. The half cells exhibited a specific capacity of 111.8 mAh g–1 at a current density of 0.1 C as well as an 82.64% capacity retention with a high initial capacity of 85.80 mAh g–1 after 1000 cycles under a rate of 5 C. Notably, in situ X-ray diffraction revealed a reversible P2–OP4 phase transition and displayed a tiny volume change of 6.96% during the charge/discharge process, indicating an outstanding cycling stability of the modified cathode. Commendably, the cylindrical cell achieved a capacity of 4.7 Ah with almost no change during 1000 cycles at 2 C, suggesting excellent potential for future applications.

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Section: Resultsmentioning

confidence: 69%

Constructing a Size-Controllable Spherical P2-Type Layered Oxides Cathode That Achieves Practicable Sodium-Ion Batteries

Yin,

Tao,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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“…Metal-ion batteries (MIBs) can store and provide energy, thus occupying a prominent position in advanced electrochemical energy storage systems. 1,2 Unlike solar, tidal, and other energy sources, MIBs belong to a class of energy technologies that reversibly convert chemical and electrical energies, ensuring an on-demand steady supply of electricity. 3,4 Various types of MIBs include Li-, Na-, K-, Zn-, and Al-ion batteries; both monoand multivalent cations have attracted attention due to their distinct features.…”

Section: Introductionmentioning

confidence: 99%

Bio-inspired carbon electrodes for metal-ion batteries

Yang,

Zhou,

Rao

et al. 2024

Nanoscale

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“…Potassium-ion batteries (PIBs) are good candidates for large-scale electric energy storage systems due to their many advantages. , They boast low cost and abundant potassium resources as well as a low standard reduction potential (−2.93 V compared to the standard hydrogen electrode). − Furthermore, in electrolytes, potassium ions exhibit low Lewis acidity and desolvation energy, resulting in excellent electrolyte transport kinetics for high-power operations. , Despite these attractive advantages, realizing their full potential comes with certain challenges; in this regard, the lack of appropriate electrolyte design strategies is a major issue. Electrolytes are responsible for transferring ions between anodes and cathodes as well as exhibiting a notable impact on the battery electrochemical performance, such as on the solvation shell, operating voltage, cycling stability, and interface chemistry. − Therefore, developing a viable electrolyte design strategy to enhance the electrochemical performance of PIBs is of considerable importance. − …”

Section: Introductionmentioning

confidence: 99%

“…3−5 Furthermore, in electrolytes, potassium ions exhibit low Lewis acidity and desolvation energy, resulting in excellent electrolyte transport kinetics for high-power operations. 6,7 Despite these attractive advantages, realizing their full potential comes with certain challenges; in this regard, the lack of appropriate electrolyte design strategies is a major issue. Electrolytes are responsible for transferring ions between anodes and cathodes as well as exhibiting a notable impact on the battery electrochemical performance, such as on the solvation shell, operating voltage, cycling stability, and interface chemistry.…”

Section: Introductionmentioning

confidence: 99%

Restructuring Electrolyte Solvation by a Partially and Weakly Solvating Cosolvent toward High-Performance Potassium-Ion Batteries

Chen,

Zhang,

et al. 2024

ACS Nano

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Ether-based electrolytes are among the most important electrolytes for potassium-ion batteries (PIBs) due to their low polarization voltage and notable compatibility with potassium metal. However, their development is hindered by the strong binding between K + and ether solvents, leading to [K + −solvent] cointercalation on graphite anodes. Herein, we propose a partially and weakly solvating electrolyte (PWSE) wherein the local solvation environment of the conventional 1,2-dimethoxyethane (DME)-based electrolyte is efficiently reconfigured by a partially and weakly solvating diethoxy methane (DEM) cosolvent. For the PWSE in particular, DEM partially participates in the solvation shell and weakens the chelation between K + and DME, facilitating desolvation and suppressing cointercalation behavior. Notably, the solvation structure of the DME-based electrolyte is transformed into a more cation−anion−cluster-dominated structure, consequently promoting thin and stable solid−electrolyte interphase (SEI) generation. Benefiting from optimized solvation and SEI generation, the PWSE enables a graphite electrode with reversible K + (de)intercalation (for over 1000 cycles) and K with reversible plating/stripping (the K||Cu cell with an average Coulombic efficiency of 98.72% over 400 cycles) and dendrite-free properties (the K||K cell operates over 1800 h). We demonstrate that rational PWSE design provides an approach to tailoring electrolytes toward stable PIBs.

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Safe electrolyte for long-cycling alkali-ion batteries

Cited by 83 publications

References 59 publications

Constructing a Size-Controllable Spherical P2-Type Layered Oxides Cathode That Achieves Practicable Sodium-Ion Batteries

Constructing a Size-Controllable Spherical P2-Type Layered Oxides Cathode That Achieves Practicable Sodium-Ion Batteries

Bio-inspired carbon electrodes for metal-ion batteries

Restructuring Electrolyte Solvation by a Partially and Weakly Solvating Cosolvent toward High-Performance Potassium-Ion Batteries

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