Prussian Blue Mg-Li Hybrid Batteries.

ABSTRACT: The major advantage of Mg batteries relies on their promise of employing an Mg metal negative electrode, which offers much higher energy density compared to graphitic carbon. However, the strong coulombic interaction of Mg²⁺ ions with anions leads to their sluggish diffusion in the solid state, which along with a high desolvation energy, hinders the development of positive electrode materials. To circumvent this limitation, Mg metal negative electrodes can be used in hybrid systems by coupling an Li⁺ insertion cathode through a dual salt electrolyte. Two "high voltage" Prussian blue analogues (average 2.3 V vs Mg/Mg²⁺; 3.0 V vs Li/Li⁺) are investigated as cathode materials and the influence of structural water is shown. Their electrochemical prof

SUBMITTER: Sun X 

PROVIDER: S-EPMC5074312 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature