A Bifunctional Fluorophosphate Electrolyte for Safer Sodium-Ion Batteries

Jiang, Xiaoyu; Liu, Xingwei; Zeng, Ziqi; Xiao, Ling; Ai, Xinping; Yang, Hanxi; Cao, Yuliang

doi:10.1016/j.isci.2018.11.020

Cited by 55 publications

(51 citation statements)

References 54 publications

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“…Actually, fluoroalkyl phosphates have been proved to be highly effective for SEI formation on carbonaceous electrodes. Moreover, partial F substitution is also helpful for further reducing the flammability of electrolytes because of a synergistic flame retardant effect between F and P . In 2018, Jiang et al reported an electrolyte of 0.9 m NaFSI in tris(2,2,2‐trifluoroethyl) phosphate (TFEP) for Na 3 V 2 (PO 4 ) 3 ||hard‐carbon full cell.…”

Section: Nonaqueous Electrolytes For Sibsmentioning

confidence: 99%

“…The electrolyte of 0.9 m NaFSI/TFEP is nonflammable and matched well with hard‐carbon electrode. Because of enhanced electrochemical and structural stabilities of hard‐carbon electrodes, the Na 3 V 2 (PO 4 ) 3 ||hard‐carbon full cell with 0.9 m NaFSI/TFEP electrolyte showed a high capacity retention of 89.2% after 300 cycles and a dramatically reduced exothermic heat at elevated temperature . Generally, organic phosphate‐based electrolytes are nonflammable and show great potential for practical applications.…”

Section: Nonaqueous Electrolytes For Sibsmentioning

confidence: 99%

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High‐Safety Nonaqueous Electrolytes and Interphases for Sodium‐Ion Batteries

Sun

Shi

Xiang

et al. 2019

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to peak shift operation since the electric energy output from solar and wind energy is not stable. [1][2][3] Electrochemical energy storage technologies representative of lithium-ion batteries (LIBs) are expected to play a critical role because of their high energy density and energy conversion efficiency. [4,5] Recently, research on sodium-ion batteries (SIBs) has been motivated and expected to be better than lithium-ion batteries for the applications on large-scale energy storage because of their advantages on similarity with LIBs and much lower cost. [6,7] In a typical SIB, two electrodes (cathode and anode) and electrolyte are three necessary internal components, as illustrated in Figure 1a. In general, the electrolytes for SIBs can be classified into liquid nonaqueous electrolyte, aqueous electrolyte, gel polymer electrolyte mainly composed of liquid nonaqueous components, and solid electrolyte (including both inorganic and polymer electrolytes). In comparison with liquid nonaqueous and gel polymer electrolytes, aqueous and solid electrolytes (especially inorganic solid electrolyte) are intrinsically safer, and some reviews have been published recently. [8][9][10] From the cost and compatibilities with manufacturing equipment points of view, the SIBs using the nonaqueous electrolytes are believed to be preferential to those using other electrolytes. A typical electrolyte for SIBs is composed of sodium salts, flammable organic carbonate or ether solvents, and/or some functional additives. In conventional SIBs using nonaqueous electrolyte, as a sole liquid component, the electrolyte can infiltrate every vacant space in the inner of the battery. The electrolyte takes part in the buildup of solid electrolyte interphase (SEI) on the anode surface and cathode electrolyte interphase (CEI) by the electrochemical reactions between the electrolyte and anode/cathode electrodes. Therefore, the electrolyte strongly affects the SEI and CEI interphase properties, and further affects the cell performance and safety characteristics of SIBs.Safety concerns of LIBs have attracted much attention, especially in the electric vehicles (EVs) applications of largescale power batteries. In the energy storage stations, there are hundreds of the high-energy batteries. A safety accident in a large-scale energy storage station could trigger a disastrous consequence with a huge economic loss. Therefore, safety characteristics of SIBs are critical for their applications in the energy storage fields. Similar with the safety concerns of LIBs, [11] the safety of SIBs is also tightly related with active Rapidly developed Na-ion batteries are highly attractive for grid energy storage. Nevertheless, the safety issues of Na-ion batteries are still a bottleneck for large-scale applications. Similar to Li-ion batteries (LIBs), the safety of Na-ion batteries is considered to be tightly associated with the electrolyte and electrode/electrolyte interphase. Although the knowledge obtained from LIBs is helpful, designing safe electrolytes and obtaining ...

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Section: Nonaqueous Electrolytes For Sibsmentioning

confidence: 99%

Section: Nonaqueous Electrolytes For Sibsmentioning

confidence: 99%

High‐Safety Nonaqueous Electrolytes and Interphases for Sodium‐Ion Batteries

Sun

Shi

Xiang

et al. 2019

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“…Therefore, it would be more economical and convenient to enhance the safety by modifying the components of the current mature electrolyte system, instead of changing its skeleton composition. The inclusion of conventional flame‐retardant additives, for instance, dimethyl methylphosphonate, tris(2,2,2‐trifluoroethyl) phosphate, and trimethyl phosphate, is a promising method, and meanwhile, a small dose of ILs might also be proposed as electrolyte additive to address the cycling instability and safety issues of SIBs . At present, the investigation on these functional solvents should be strengthened for safer organic electrolytes.…”

Section: Summary and Perspectivementioning

confidence: 99%

Recent research progresses in ether‐ and ester‐based electrolytes for sodium‐ion batteries

Lin

Xia

Wang

et al. 2019

InfoMat

218

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Owing to the natural abundance and low cost of sodium resources, sodium‐ion batteries (SIBs) have drawn considerable attention for state‐of‐the‐art power storage devices over the last few years. To enable advanced SIBs with a brighter future, great effort has been made, not only through optimizing the electrode materials, but also with rationally designing various electrolyte systems. Among the available electrolyte systems, organic electrolytes, especially those based on esters as well as ethers, are the most promising ones for practical application in the foreseeable future, due to their numerous inherent advantages. This review is concerned with the recent research progresses on organic electrolytes for SIBs, focusing on ether‐based and ester‐based ones.

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“…C, Ignition test of EC/DEC and TFEP solvent and DSC profiles of NaV 2 (PO 4 ) 3 and Na x C in carbonate and TFEP electrolytes. Reproduced with permission 55 . Copyright 2018, Elsevier Ltd. D, Overview of the physicochemical properties of the electrolytes with different concentrations, the variations of interactions between molecules/ions and interfacial components, and the concentration dependence of ionic conductivity and viscosity at 25°C and 0°C for NaPF 6 in EC/PC electrolyte.…”

Section: Electrolytes For All‐climate Sibsmentioning

confidence: 99%

Advances in materials for all‐climate sodium‐ion batteries

Zhu

Wang

2020

EcoMat

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Sodium‐ion batteries (SIBs) have attracted much interest for medium‐ to large‐scale energy storage applications owing to the high abundance and low cost of sodium reserves. However, a principal concern for the wide deployment of stationary SIBs is their temperature tolerance. Extreme temperatures can deteriorate the performance and safety of SIBs by causing very sluggish Na‐transfer kinetics, dendrites formation, and severe interfacial reactions. The development of all‐climate SIBs depends on the fundamental understanding of the chemical reactions at different temperatures and advances of all the key components, especially the electrolyte and the electrode materials. Herein, we start from briefing the key challenges in developing all‐climate SIBs, then examining the latest achievements in confronting the challenges. The insights presented in this review are believed to guide and inspire further research interest in designing all‐climate SIBs that will hopefully serve as a low‐cost, high‐performing, and reliable stationary energy storage solution.

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A Bifunctional Fluorophosphate Electrolyte for Safer Sodium-Ion Batteries

Cited by 55 publications

References 54 publications

High‐Safety Nonaqueous Electrolytes and Interphases for Sodium‐Ion Batteries

High‐Safety Nonaqueous Electrolytes and Interphases for Sodium‐Ion Batteries

Recent research progresses in ether‐ and ester‐based electrolytes for sodium‐ion batteries

Advances in materials for all‐climate sodium‐ion batteries

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