Hauptseite > Publikationsdatenbank > Towards practical sulfolane based electrolytes: Choice of Li salt for graphite electrode operation > print |
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024 | 7 | _ | |a 10.1016/j.jpowsour.2018.05.077 |2 doi |
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100 | 1 | _ | |a Zhang, Tong |0 P:(DE-Juel1)167369 |b 0 |u fzj |
245 | _ | _ | |a Towards practical sulfolane based electrolytes: Choice of Li salt for graphite electrode operation |
260 | _ | _ | |a New York, NY [u.a.] |c 2018 |b Elsevier |
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520 | _ | _ | |a Sulfolane (tetramethylene sulfone, SL) is known for leading to Li-ion electrolytes with high anodic stability. However, the operation of graphite electrodes in alternative electrolytes is usually challenging, especially when ethylene carbonate (EC) is not used as co-solvent. Thus, we study here the influence of the lithium salt on the physico-chemical and electrochemical properties of EC-free SL-based electrolytes and on the performance of graphite electrodes based on carboxymethyl cellulose (CMC). SL mixed with dimethyl carbonate (DMC) leads to electrolytes as conductive as state-of-the-art alkyl carbonate-based electrolytes with wide electrochemical stability windows. The compatibility with graphite electrodes depends on the Li salt used and, even though cycling is possible with most salts, lithium difluoro-oxalato borate (LiDFOB) is especially interesting for graphite operation. LiDFOB electrolytes are conductive at room temperature (ca. 6 mS cm−1) with an anodic stability slightly below 5 V vs. Li/Li+ on particulate carbon black electrodes. In addition, it allows cycling graphite electrodes with steady capacity and high coulombic efficiency without any additive. The testing of graphite electrodes in half-cells is, however, problematic with SL:DMC mixtures and, by switching the Li metal counter electrode for LiFePO4, the graphite electrode achieves better practical performance in terms of rate capability. |
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700 | 1 | _ | |a Porcher, Willy |0 P:(DE-HGF)0 |b 1 |
700 | 1 | _ | |a Paillard, Elie |0 P:(DE-Juel1)166311 |b 2 |e Corresponding author |
773 | _ | _ | |a 10.1016/j.jpowsour.2018.05.077 |g Vol. 395, p. 212 - 220 |0 PERI:(DE-600)1491915-1 |p 212 - 220 |t Journal of power sources |v 395 |y 2018 |x 0378-7753 |
856 | 4 | _ | |y Restricted |u https://juser.fz-juelich.de/record/863370/files/1-s2.0-S0378775318305615-main.pdf |
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856 | 4 | _ | |y Published on 2018-06-15. Available in OpenAccess from 2020-06-15. |u https://juser.fz-juelich.de/record/863370/files/Choice%20of%20Li%20salt%20-%20R2_for%20repository.pdf |
856 | 4 | _ | |y Published on 2018-06-15. Available in OpenAccess from 2020-06-15. |x pdfa |u https://juser.fz-juelich.de/record/863370/files/Choice%20of%20Li%20salt%20-%20R2_for%20repository.pdf?subformat=pdfa |
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