Magnesium Ethylenediamine Borohydride as Solid-State Electrolyte for Magnesium Batteries
نویسندگان
چکیده
Solid-state magnesium ion conductors with exceptionally high ionic conductivity at low temperatures, 5 × 10-8 Scm-1 at 30 °C and 6 × 10-5 Scm-1 at 70 °C, are prepared by mechanochemical reaction of magnesium borohydride and ethylenediamine. The coordination complexes are crystalline, support cycling in a potential window of 1.2 V, and allow magnesium plating/stripping. While the electrochemical stability, limited by the ethylenediamine ligand, must be improved to reach competitive energy densities, our results demonstrate that partially chelated Mg2+ complexes represent a promising platform for the development of an all-solid-state magnesium battery.
منابع مشابه
Magnesium Borohydride: From Hydrogen Storage to Magnesium Battery**
Beyond hydrogen storage: The first example of reversible magnesium deposition/stripping onto/from an inorganic salt was seen for a magnesium borohydride electrolyte. High coulombic efficiency of up to 94 % was achieved in dimethoxyethane solvent. This Mg(BH(4))(2) electrolyte was utilized in a rechargeable magnesium battery.
متن کاملHybrid system for rechargeable magnesium battery with high energy density
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 t...
متن کاملHigh power rechargeable magnesium/iodine battery chemistry
Rechargeable magnesium batteries have attracted considerable attention because of their potential high energy density and low cost. However, their development has been severely hindered because of the lack of appropriate cathode materials. Here we report a rechargeable magnesium/iodine battery, in which the soluble iodine reacts with Mg2+ to form a soluble intermediate and then an insoluble fin...
متن کاملElucidating the structure of the magnesium aluminum chloride complex electrolyte for magnesium-ion batteries
Citation Canepa, Pieremanuele, Saivenkataraman Jayaraman, Lei Cheng, Nav Nidhi Rajput, William D. Richards, Gopalakrishnan Sai Gautam, Larry A. Curtiss, Kristin A. Persson, and Gerbrand Ceder. “Elucidating the Structure of the Magnesium Aluminum Chloride Complex Electrolyte for Magnesium-Ion Batteries.” Energy Environ. Sci. 8, no. 12 (2015): 3718–3730. © 2015 Royal Society of Chemistry As Publi...
متن کاملScreening for positive electrodes for magnesium batteries: a protocol for studies at elevated temperatures.
The well-known all phenyl complex (APC) electrolyte for magnesium batteries is studied for the first time at high temperature using tetraglyme as a solvent. Combined with a molybdenum current collector, this enables the examination of positive electrode materials for Mg batteries at temperatures as high as 180 °C and up to 2 V vs. Mg, allowing discovery of the auspicious properties of CuS as a ...
متن کامل