Process for the storage of hydrogen using a system that strikes a balance between an alloy of alkaline metal and silicon and the corresponding hydride
OwnerPascal Raybaud, Francois Ropitalinventors
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Abstract
A process for the reversible storage of hydrogen, comprising bringing an alloy of alkaline metal and silicon into contact with gaseous hydrogen leading to the formation of the hydride or corresponding hydrides, comprises the use of at least one balanced system that corresponds to the formula: MXMSiMXMSiHn where M is selected from among Li, Na, or K and in which atomic ratios XM take on the following values: XLi=1
Claims16
Process for reversible storage of hydrogen comprising bringing into contact an alloy of alkaline metal and silicon with the gaseous hydrogen leading to the formation of hydride or corresponding hydrides, characterized in that a balanced system is used and said system corresponds to the formula:
- MXMSiMXMSiHn
- where M is selected from among Li, Na, or K, and in that atomic ratios XM take on the following values:
- XLi=1
- 1≦XNa≦3
- 1≦XK≦2
- n is the number of hydrogen atoms corresponding to the stoiechiometry of the hydride or hydrides formed.
Process for reversible storage of hydrogen comprising bringing into contact an alloy of alkaline metal and silicon with the gaseous hydrogen, leading to the formation of hydride or corresponding hydrides, wherein a balanced system that corresponds to the formula:
- MSiXSiMSiXSiH2XSi+1
- where M is selected from among Li, Na, or K and in which the atomic ratio XSi=Si/M takes on a value of 1 to 4,
- is used.
New crystalline structure that corresponds to formula NaSiH3 and belongs to space group PNMA.
New crystalline structure corresponding to formula LiSiH3 and belonging to space group PNMA.
Dependencies are inferred from the claim text.