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MLi2Ti6O14 (M= Sr, Ba, Pb): new cathode materials for magnesium-lithium hybrid batteries

Abstract

Magnesium-lithium hybrid batteries (MLHBs) are playing an increasingly important role in energy storage systems owing to abundant raw materials and favorable safety characteristic. Consequently, the MLi2Ti6O14 (M= Sr, Ba, Pb) compounds have been synthesized by a sol-gel method followed with the calcination. As cathodes for MLHBs for the first time, MLi2Ti6O14 (M= Sr, Ba, Pb) show good electrochemical properties. For example, at 50 mA g-1, the specific capacities of MLi2Ti6O14 (M=Sr, Ba, Pb) after 300 cycles are 75.6, 68.2 and 76.3 mA h g-1, respectively. In addition, MLi2Ti6O14 (M=Sr, Ba, Pb) also possess outstanding rate performances. Importantly, the ion storage mechanism of MLi2Ti6O14 (M=Sr, Ba, Pb) compounds in MLHBs was studied with PbLi2Ti6O14 as the representative. These results reveal that MLi2Ti6O14 (M=Sr, Ba, Pb) have good electrochemistry reversibility, which can be used as cathodes for MLHBs.

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Publication details

The article was received on 25 Sep 2019, accepted on 08 Nov 2019 and first published on 08 Nov 2019


Article type: Paper
DOI: 10.1039/C9DT03799C
Dalton Trans., 2019, Accepted Manuscript

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    MLi2Ti6O14 (M= Sr, Ba, Pb): new cathode materials for magnesium-lithium hybrid batteries

    C. Zhu, Y. Tang, L. Liu, X. Li, Y. Gao, S. Gao and Y. NuLi, Dalton Trans., 2019, Accepted Manuscript , DOI: 10.1039/C9DT03799C

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