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For Mg batteries it is known that stainless steel parts are stable only up to ~2.2 V vs. Mg when exposed to organohaloaluminates, e.g. the APC electrolyte. Has anyone tried to apply high performance alloys like Inconel or Hastelloy so far?
I want to discuss some crucial points about electrolyte and cathode materials. If anyone has expertise in the magnesium battery field then let me know.
Whenever I try to evaporate Mg in combination with other transition metals in the thermal evaporator to grow thin film Mg reacts with oxygen and does not react with desired metal. How to control Magnesium being reacted to the oxygen in thermal evaporator?
Many previously reported synthesis are using MgCl2 + LiBH4 (or NaBH4) with ball milling.
And then heating at high temperature.
And these are for hydrogen storage materials...
But, I just want to get Mg(BH4)2 salt for Mg battery electrolyte. (not specific alfa phase or beta phase Mg(BH4)2, whatever..)
So how about this method??
Mg(TFSI)2 + LiBH4 (or NaBH4) in diethyl ether with stirring overnight.
Then precipitates will be Mg(BH4)2 , i guess..
is it not proper method?
If there is anyone who know about Mg(BH4)2 synthesis, please give your advice!
Generally metal anodes are polished, cleaned etc prior to cell assembly but in extreme non-aqueous condition; like the case in Mg battery, what will make Mg metal surface absolutely clean?
When I construct a copper/zinc voltaic cell, I get the expected voltage however when I construct a magnesium/nickel or magnesium/iron or other possible combinations, I get almost half the voltage.
I used different combinations using Fe, Mg, Ni, Cu, Al and Zn strips with 1M solutions of iron nitrate, magnesium nitrate, nickel nitrate, copper nitrate, aluminum nitrate, and zinc nitrate.
Fresh Filter paper strips soaked in potassium nitrate were used as salt bridge each time.
I get voltage each time but it is less than expected.