Enhanced interphasial stability of hard carbon for sodium-ion battery via film-forming electrolyte additive

Zhang, Wenguang; Zeng, Fanghong; Huang, Huijuan; Yu, Yan; Xu, Mengqing; Xing, Lidan; Li, Weishan

doi:10.1007/s12274-022-4583-0

Cited by 21 publications

(17 citation statements)

References 59 publications

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“…The whole thermal process was carried out under argon atmosphere. [10,[20][21][22][25][26][27][28][29][31][32][33] compared to the present work. Further experimental information (if available) are summarized in Table S1.…”

Section: Experimental Preparation Of the Nvp/c Composite Materialsmentioning

confidence: 92%

Enabling Long‐term Cycling Stability of Na₃V₂(PO₄)₃/C vs. Hard Carbon Full‐cells

Stüble,

Müller,

Klemens

et al. 2023

Batteries & Supercaps

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Sodium‐ion batteries are becoming an increasingly important complement to lithium‐ion batteries. However, while extensive knowledge on the preparation of Li‐ion batteries with excellent cycling behavior exists, studies on applicable long‐lasting sodium‐ion batteries are still limited. Therefore, this study focuses on the cycling stability of batteries composed of Na3V2(PO4)3/C based cathodes and hard carbon anodes. It is shown that full‐cells with a decent stability are obtained for ethylene carbonate/propylene carbonate electrolyte and the conducting salt NaPF6. With cathode loadings of 1.2 mAh/cm2, after cell formation discharge capacities up to 92.6 mAh/g are obtained, and capacity retentions >90 % over 1000 charge/discharge cycles at 0.5 C/0.5 C are observed. It is shown that both, the additive fluoroethylene carbonate and impurities in the electrolyte, negatively affect the overall discharge capacity and cycling stability and should therefore be avoided. Remarkably, the internal resistances of well‐balanced and well‐built cells did not increase over 1500 cycles and 5 months of testing, which is a very promising result regarding the possible lifespan of the cells. The initial loss of active sodium ions in hard carbon remains a major problem, which can only be partially reduced by proper balancing.

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Section: Experimental Preparation Of the Nvp/c Composite Materialsmentioning

confidence: 92%

Enabling Long‐term Cycling Stability of Na₃V₂(PO₄)₃/C vs. Hard Carbon Full‐cells

Stüble,

Müller,

Klemens

et al. 2023

Batteries & Supercaps

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“…The continuous accumulation of electrolyte decomposition substances will seriously increase the interface impedance and sharply decrease the discharge capacity. Zhang et al used n-phenyl bis (trifluoridemethansulfonimide) as an electrolyte film-forming additive, and could effectively improve the long-cycle performance of the hard carbon negative electrode of sodium-ion batteries, making the cyclic stability of half-batteries increase from 0% to 50% after 500 cycles, and the improved interphase stability makes the capacity retention rate of the whole battery increase by 52% after 100 cycles [ 109 ]. Jin et al designed a non-flammable local high concentration electrolyte for highly reversible sodium-ion batteries [ 110 ].…”

Section: Challenges and Solutions Of Hard Carbonmentioning

confidence: 99%

The Progress of Hard Carbon as an Anode Material in Sodium-Ion Batteries

et al. 2023

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When compared to expensive lithium metal, the metal sodium resources on Earth are abundant and evenly distributed. Therefore, low-cost sodium-ion batteries are expected to replace lithium-ion batteries and become the most likely energy storage system for large-scale applications. Among the many anode materials for sodium-ion batteries, hard carbon has obvious advantages and great commercial potential. In this review, the adsorption behavior of sodium ions at the active sites on the surface of hard carbon, the process of entering the graphite lamellar, and their sequence in the discharge process are analyzed. The controversial storage mechanism of sodium ions is discussed, and four storage mechanisms for sodium ions are summarized. Not only is the storage mechanism of sodium ions (in hard carbon) analyzed in depth, but also the relationships between their morphology and structure regulation and between heteroatom doping and electrolyte optimization are further discussed, as well as the electrochemical performance of hard carbon anodes in sodium-ion batteries. It is expected that the sodium-ion batteries with hard carbon anodes will have excellent electrochemical performance, and lower costs will be required for large-scale energy storage systems.

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“…8a). 76 The SA was also investigated as a synergistic co-additive to FEC by Sun's group. 77 It is reported that a uniform and stable SEI layer formation is evident (Fig.…”

Section: Electrolyte Additivesmentioning

confidence: 99%

Section: Electrolyte Additivesmentioning

confidence: 99%

Electrode/electrolyte additives for practical sodium-ion batteries: a mini review

Zhang

Zhao

et al. 2023

Inorg. Chem. Front.

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Enhanced interphasial stability of hard carbon for sodium-ion battery via film-forming electrolyte additive

Cited by 21 publications

References 59 publications

Enabling Long‐term Cycling Stability of Na₃V₂(PO₄)₃/C vs. Hard Carbon Full‐cells

Enabling Long‐term Cycling Stability of Na₃V₂(PO₄)₃/C vs. Hard Carbon Full‐cells

The Progress of Hard Carbon as an Anode Material in Sodium-Ion Batteries

Electrode/electrolyte additives for practical sodium-ion batteries: a mini review

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Enhanced interphasial stability of hard carbon for sodium-ion battery via film-forming electrolyte additive

Cited by 21 publications

References 59 publications

Enabling Long‐term Cycling Stability of Na3V2(PO4)3/C vs. Hard Carbon Full‐cells

Enabling Long‐term Cycling Stability of Na3V2(PO4)3/C vs. Hard Carbon Full‐cells

The Progress of Hard Carbon as an Anode Material in Sodium-Ion Batteries

Electrode/electrolyte additives for practical sodium-ion batteries: a mini review

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Product

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Enabling Long‐term Cycling Stability of Na₃V₂(PO₄)₃/C vs. Hard Carbon Full‐cells

Enabling Long‐term Cycling Stability of Na₃V₂(PO₄)₃/C vs. Hard Carbon Full‐cells