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Prototype rechargeable magnesium batteries using ionic liquid electrolytes
DOI:10.1016/j.jpowsour.2019.03.049.png)
摘要
En 中文
Understanding Mg-ion speciation is of utmost importance to the rational design of electrolytes for rechargeable magnesium batteries. Herein, we report an effort to better understand Mg-ion speciation in ionic liquid (IL) electrolytes through the design of alkoxy-functionalized cations with different alkoxy substituent. In contrast with previous studies focusing on the coordination sphere of Mg2+, the comparison of Raman spectroscopy, electrochemical and DFT calculation results of various IL-based electrolytes suggests that the coordination sphere of transient Mg+ plays a key role in Mg reversible deposition/dissolution process. Finally, a prototype Mg/V2O5 cell using the noncorrosive IL-based electrolyte is demonstrated for the first time, exhibiting a remarkable initial discharge capacity of 140 mAh g(-1) and reversible capacity of 100 mAh g(-1).
Keyword:
Magnesium batteries
Magnesium coordination sphere
Vanadium oxide
Ionic liquids
Multivalent electrolytes
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期刊
IF:
7.9
论文数:
3.7W
被引数:
15.0W
机构
引用论文
Reversible Mg-Ion Insertion in a Metastable One-Dimensional Polymorph of V2O5在V2O5的亚稳态一维多晶型物中可逆的Mg离子插入
CHEM
IF19.6
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