Dual Cation Exchanged Poly(ionic liquid)s as Magnesium Conducting Electrolytes

Dual Cation Exchanged Poly(ionic liquid)s as Magnesium Conducting Electrolytes
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作为镁导电电解质的双阳离子交换聚(离子液体)

DOI:
10.1021/acsapm.9b00614
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发表时间:
2019
影响因子:
5
通讯作者:
Schaefer, Jennifer L.
Schaefer, Jennifer L.
中科院分区:
化学2区
文献类型:
--
作者:
Park, Bumjun;Ford, Hunter O.;Merrill, Laura C.;Liu, Jiacheng;Murphy, Loyal P.;Schaefer, Jennifer L.

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固态镁离子导体被期望用于下一代电池应用。在这里,我们调查镁导电聚合物电解质生产的聚(离子液体)通过混合1-丁基-3-甲基咪唑聚[4-苯乙烯磺酰基(三氟甲磺酰基)酰亚胺](BMIPSTFSI)与镁类似物镁(PSTFSI)2的双阳离子交换。聚离子液体在80 °C下的离子电导率为8.6 × 10-5S cm-1,并且电导率随着镁含量达到5mol%Mg(PSTFSI)2(3.8 × 10-5S cm-1)而没有显著降低。通过X射线散射在这些低镁含量下观察到特征性聚(离子液体)离子-离子相关峰,但在较高镁负载下消失。在Cu/Mg电池中进行极化实验,导致在Cu电极上的稀疏的富镁颗粒状沉积物。然而,在缺乏广泛沉积的情况下,镁电沉积或镁从镁金属剥离对于该电解质是不利的。
Solid-state magnesium-ion conductors are desired for next-generation battery applications. Here we investigate magnesium conducting polymer electrolytes produced through dual cation exchange of a poly(ionic liquid) by mixing 1-butyl-3-methylimidazolium poly[4-styrenesulfonyl(trifluoromethanesulfonyl)imide] (BMIPSTFSI) with the magnesiated analogue Mg(PSTFSI)2. An ionic conductivity of 8.6 × 10–5S cm–1at 80 °C was achieved for the poly(ionic liquid), and conductivity did not significantly decrease with magnesium content up to 5 mol % Mg(PSTFSI)2(3.8 × 10–5S cm–1). The characteristic poly(ionic liquid) ion-to-ion correlation peak was observable via X-ray scattering at these low magnesium contents but disappeared at higher magnesium loadings. Polarization experiments were performed in Cu/Mg cells, resulting in sparse magnesium-rich particle-like deposits on the Cu electrode. With a lack of widespread deposition, however, either the magnesium electrodeposition or the magnesium stripping from the magnesium metal is unfavorable for this electrolyte.
使用具有更高热稳定性的 Sufone-Ether 混合物的镁电池免调节电解质
DOI: 10.1021/acs.chemmater.8b00483
发表时间: 2018
影响因子: 8.6
作者:
Merrill, Laura C.;Schaefer, Jennifer L.
通讯作者: Schaefer, Jennifer L.
DOI: 10.1021/acs.macromol.8b01717
发表时间: 2018-11-13
期刊: MACROMOLECULES
影响因子: 5.5
作者:
Ford, Hunter O.;Merrill, Laura C.;Schaefer, Jennifer L.
通讯作者: Schaefer, Jennifer L.
DOI: 10.3389/fchem.2019.00194
发表时间: 2019
影响因子: 5.5
作者:
Merrill, Laura C.;Schaefer, Jennifer L.
通讯作者: Schaefer, Jennifer L.
DOI: 10.1021/acs.macromol.8b01221
发表时间: 2018-11-13
期刊: MACROMOLECULES
影响因子: 5.5
作者:
Stacy, Eric W.;Gainaru, Catalin P.;Sokolov, Alexei P.
通讯作者: Sokolov, Alexei P.
用于电化学应用的离子液体的物理性质
DOI: 10.1002/9783527682706.ch3
发表时间: 2017
影响因子: 2.6
作者:
H. Ohno
通讯作者: H. Ohno