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Hybrid system for rechargeable magnesium battery with high energy density.


ABSTRACT: One of the main challenges of electrical energy storage (EES) is the development of environmentally friendly battery systems with high safety and high energy density. Rechargeable Mg batteries have been long considered as one highly promising system due to the use of low cost and dendrite-free magnesium metal. The bottleneck for traditional Mg batteries is to achieve high energy density since their output voltage is below 2.0 V. Here, we report a magnesium battery using Mg in Grignard reagent-based electrolyte as the negative electrode, a lithium intercalation compound in aqueous solution as the positive electrode, and a solid electrolyte as a separator. Its average discharge voltage is 2.1 V with stable discharge platform and good cycling life. The calculated energy density based on the two electrodes is high. These findings open another door to rechargeable magnesium batteries.

SUBMITTER: Chang Z 

PROVIDER: S-EPMC4502397 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature

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Hybrid system for rechargeable magnesium battery with high energy density.

Chang Zheng Z   Yang Yaqiong Y   Wang Xiaowei X   Li Minxia M   Fu Zhengwen Z   Wu Yuping Y   Holze Rudolf R  

Scientific reports 20150715


One of the main challenges of electrical energy storage (EES) is the development of environmentally friendly battery systems with high safety and high energy density. Rechargeable Mg batteries have been long considered as one highly promising system due to the use of low cost and dendrite-free magnesium metal. The bottleneck for traditional Mg batteries is to achieve high energy density since their output voltage is below 2.0 V. Here, we report a magnesium battery using Mg in Grignard reagent-ba  ...[more]

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