New lithium salts with croconato-complexes of boron for lithium battery electrolytes

Xue, Zhao-Ming; Wu, Kaikai; Liu, Bing; Chen, Chunhua

doi:10.1016/j.jpowsour.2007.05.100

Cited by 33 publications

(14 citation statements)

References 14 publications

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“…Lithium chelatoborates as electrolyte salts have been widely studied and with the aim of substituting LiPF 6 . The latter is unstable at elevated temperature and sensitive with a trace amount of water .…”

Section: Introductionmentioning

confidence: 99%

A Composite Gel Polymer Electrolyte with High Performance Based on Poly(Vinylidene Fluoride) and Polyborate for Lithium Ion Batteries

Zhu

Xiao

Shi

et al. 2013

Advanced Energy Materials

262

120

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A composite membrane based on electrospun poly(vinylidene fl uoride) (PVDF) and lithium polyvinyl alcohol oxalate borate (LiPVAOB) exhibiting high safety (self-extinguishing) and good mechanical property is prepared. The ionic conductivity of the as-prepared gel polymer electrolyte from this composite membrane saturated with 1 mol L −1 LiPF 6 electrolyte at ambient temperature can be up to 0.26 mS cm −1 , higher than that of the corresponding well-used commercial separator (Celgard 2730), 0.21 mS cm −1 . Moreover, the lithium ion transference in the gel polymer electrolyte at room temperature is 0.58, twice as that in the commercial separator (0.27). Furthermore, the absorbed electrolyte solvent is diffi cult to evaporate at elevated temperature. Its electrochemical performance is evaluated by using LiFePO 4 cathode. The obtained results suggest that this gel-type composite membrane shows great possibilities for use in large-capacity lithium ion batteries that require high safety.

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Section: Introductionmentioning

confidence: 99%

A Composite Gel Polymer Electrolyte with High Performance Based on Poly(Vinylidene Fluoride) and Polyborate for Lithium Ion Batteries

Zhu

Xiao

Shi

et al. 2013

Advanced Energy Materials

262

120

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“…[148,218,219] Replacing LiPF 6 , LiClO 4 or LiBF 4 salts with lithium chelatoborates has produced improvements in the thermochemical and Li ion transport properties of gel polymer electrolytes. [220][221][222] For instance, a composite gel polymer electrolyte based on PVdF and lithium polyvinyl alcohol oxalate borate (LiPVAOB) has been shown to significantly improve the Li ion conductivity, allow fast Li transfer and develop a stable SEI. [223] It can be seen from Equations (4) and (5) that Sand's time (τ), which is the start time for Li dendrite formation, is directly related to 1/t anion and for a binary Li + electrolyte the t anion + t Li+ = 1.…”

Section: Designing Electrolytes For Achieving Safe and Stable LI Metamentioning

confidence: 99%

Key Aspects of Lithium Metal Anodes for Lithium Metal Batteries

Ghazi

Sun

et al. 2019

Small

286

180

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Rechargeable batteries are considered promising replacements for environmentally hazardous fossil fuel‐based energy technologies. High‐energy lithium‐metal batteries have received tremendous attention for use in portable electronic devices and electric vehicles. However, the low Coulombic efficiency, short life cycle, huge volume expansion, uncontrolled dendrite growth, and endless interfacial reactions of the metallic lithium anode are major obstacles in their commercialization. Extensive research efforts have been devoted to address these issues and significant progress has been made by tuning electrolyte chemistry, designing electrode frameworks, discovering nanotechnology‐based solutions, etc. This Review aims to provide a conceptual understanding of the current issues involved in using a lithium metal anode and to unveil its electrochemistry. The most recent advancements in lithium metal battery technology are outlined and suggestions for future research to develop a safe and stable lithium anode are presented.

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“…Among these new alternative salts is to be mentioned LiMOB, proposed by Xu et al [33], whose main physicochemical characteristics are summarized in Table 4.4. Xue et al have prepared and electrochemically investigated LBCB, LCSB [49,50], and LBDOB [51]. These salts were found to be thermally stable up to 250°C and partially insoluble in standard lithium battery electrolyte solvents [39,44].…”

Section: Alternative Lithium Saltsmentioning

confidence: 99%