On the thermal behavior of Li bis(oxalato)borate LiBOB

Zinigrad, Ella; Larush-Asraf, Liraz; Salitra, Gregory; Sprecher, Milon; Aurbach, Doron

doi:10.1016/j.tca.2007.03.001

Cited by 51 publications

(35 citation statements)

References 10 publications

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“…Inconsistent with the results shown in Fig. 1, the current density in LiBOB electrolyte is much lower than that in LiPF 6 . It is also shown that in LiBOB electrolyte, both the electrolyte and aluminum are electrochemically stable at potentials up to 5 V vs Li/Li + .…”

Section: Resultssupporting

confidence: 89%

“…Lithium bis͑oxalato͒borate ͑LiBOB͒ has been proposed and considered as a promising alternative to the problematic LiPF 6 for the Li-ion battery due to its unique properties. 5 It is thermally stable up to as high as 300°C 6 and participates in forming a very stable, solid electrolyte interface on the surface of a carbonaceous anode.…”

mentioning

confidence: 99%

“…5 It is thermally stable up to as high as 300°C 6 and participates in forming a very stable, solid electrolyte interface on the surface of a carbonaceous anode. [7][8][9] It even allows the use of pure propylene carbonate ͑PC͒ electrolyte for Li-ion batteries.…”

mentioning

confidence: 99%

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Aluminum Corrosion Behavior of LiBOB in Composite Polymer Electrolyte for Li-Polymer Batteries

Xie

Tang

Li³

et al. 2008

Electrochem. Solid-State Lett.

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The aluminum corrosion behavior of lithium bis͑oxalato͒borate ͑LiBOB͒ in composite polymer electrolyte ͑CPE͒ was investigated and compared to LiPF 6 through various electrochemical methods. The open-circuit voltage of the Li/CPE/Al 2032 button cells with LiBOB is 0.4-0.5 V higher than that with LiPF 6 . The polarization current density is effectively suppressed in LiBOB electrolyte. The electrical impedance spectroscopy results revealed that aluminum is electrochemically stable with LiBOB at 5.0 V ͑vs Li/Li + ͒ or even higher. At 70°C, the aluminum also remains rather stable at 5.0 V with LiBOB, while in LiPF 6 , it suffers severe corrosion.

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Section: Resultssupporting

confidence: 89%

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confidence: 99%

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Aluminum Corrosion Behavior of LiBOB in Composite Polymer Electrolyte for Li-Polymer Batteries

Xie

Tang

Li³

et al. 2008

Electrochem. Solid-State Lett.

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“…Other than the ability to protect the anode, LiBOB was also reported to be capable of forming a passivation film on the surface of the cathode, which mitigates the oxidative decomposition of electrolyte solvents on the high voltage cathodes [143,122] and reduces the dissolution of transition metal ions from the cathode into the electrolyte [126]. Besides these desirable properties, both LiBOB and the SEI formed from it show excellent thermal stability [144]. One of the disadvantages of LiBOB is poor solubility in organic carbonates, especially in linear carbonates [118].…”

Section: Salts With Sei Formation Capabilitymentioning

confidence: 99%

Electrolytes for Lithium and Lithium-Ion Batteries

Zhang

2015

Rechargeable Batteries

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“…[12][13][14] Besides, the quaternary ammonium bis(oxalate)borates have also exhibited better performance in capaci- In this study, a series of ILBOBs are introduced into the electrolyte system. For these ILBOBs, systematic investigations were carried out to reveal the effects of their different functional groups and cations on the electrochemical properties of the electrolytes as well as the photovoltaic performances of the DSCs.…”

Section: 3mentioning

confidence: 99%

First application of bis(oxalate)borate ionic liquids (ILBOBs) in high-performance dye-sensitized solar cells

Wang

Zhang

et al. 2013

RSC Adv.

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A series of bis(oxalate)borate ionic liquids (ILBOBs) were developed for the first time as the necessary components of the electrolyte system for dye-sensitized solar cells (DSCs). It was found that the photovoltaic performances of DSCs were significantly improved by 26% to 45% with these ILBOBs in the organic solvent electrolytes. Systematic investigations were carried out to reveal the effects of the chain lengths of the quaternary ammonium BOB as well as the cations of the ILBOBs on the performances of the DSCs. Among them, the highest power conversion efficiency (PCE) was achieved by the DSC based on the electrolyte containing 1-ethyl-3-methylimidazolium bis(oxalate)borate (EmimBOB). Specifically, the addition of EmimBOB increased the short circuit current densities (J sc ) from 11.87 mA cm 22 to 15.99 mA cm 22, and the open-circuit voltage (V oc ) from 0.721 V to 0.742 V, accompanied by a final 45% improvement of the overall PCE from 6.01% to 8.73% under AM 1.5, 100 mW cm 22 illumination. As an ionic liquid, EmimBOB was also used to develop a solvent-free electrolyte system. Compared with the one containing pure 1-methyl-3-propylimidazolium iodide (PMII), the hybrid solvent-free electrolyte system based on the EmimBOB/PMII combination notably increased the PCE of the DSCs from 3.48% to 5.38%.Finally, using solvent-free electrolytes, the long-term stability of the DSC devices were remarkably improved.

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On the thermal behavior of Li bis(oxalato)borate LiBOB

Cited by 51 publications

References 10 publications

Aluminum Corrosion Behavior of LiBOB in Composite Polymer Electrolyte for Li-Polymer Batteries

Aluminum Corrosion Behavior of LiBOB in Composite Polymer Electrolyte for Li-Polymer Batteries

Electrolytes for Lithium and Lithium-Ion Batteries

First application of bis(oxalate)borate ionic liquids (ILBOBs) in high-performance dye-sensitized solar cells

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