申请人:FUJIFILM Wako Pure Chemical Corporation
公开号:EP3904337A1
公开(公告)日:2021-11-03
An object of the present invention is to provide a highly practical electrolyte solution which has high oxidation resistance and enables dissolution-precipitation of magnesium to proceed repeatedly and stably.
The present invention relates to an electrolyte solution for a magnesium battery comprising a mixture of a compound represented by the general formula [1], a Lewis acid or a compound represented by the general formula [4], and a solvent; an electrochemical device containing the electrolyte solution; and a compound represented by the general formula [1].
[In the general formula [1], X1 represents a halogeno group, and R1 represents an alkyl group having 1 to 10 carbon atoms, which may have a group represented by - SO3MgX2 (X2 represents a halogeno group); a haloalkyl group having 1 to 10 carbon atoms, which may have a group represented by -SO3MgX2 (X2 is the same as described above); an aryl group having 6 to 14 carbon atoms, which may have an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a halogeno group, or a group represented by -SO3MgX2 (X2 is the same as described above); or a biphenyl group which may have a group represented by -SO3MgX2 (X2 is the same as described above).]
Mg [N(SO2R4)2]2 [4]
(In the general formula [4], four R4's each independently represent an alkyl group having 1 to 6 carbon atoms, a perfluoroalkyl group having 1 to 6 carbon atoms, a phenyl group, or a perfluorophenyl group.)
本发明的目的是提供一种实用性很强的电解质溶液,它具有很强的抗氧化性,并能使镁的溶解沉淀反复稳定地进行。
本发明涉及一种用于镁电池的电解质溶液,它包括通式[1]所代表的化合物、路易斯酸或通式[4]所代表的化合物和溶剂的混合物;含有该电解质溶液的电化学装置;以及通式[1]所代表的化合物。
[在通式[1]中,X1 代表卤代基团,R1 代表具有 1 至 10 个碳原子的烷基,其基团可以是 -SO3MgX2 (X2 代表卤代基团);具有 1 至 10 个碳原子的卤代烷基,其基团可以是 -SO3MgX2 (X2 与上述相同);具有 6 至 14 个碳原子的芳基,该芳基可以具有 1 至 6 个碳原子的烷基、1 至 6 个碳原子的烷氧基、卤代基团或由 -SO3MgX2 代表的基团(X2 与上述相同);或联苯基团,该联苯基团可以具有由 -SO3MgX2 代表的基团(X2 与上述相同)。]
镁[N(SO2R4)2]2[4]
(通式[4]中,四个 R4 各自独立地代表具有 1 至 6 个碳原子的烷基、具有 1 至 6 个碳原子的全氟烷基、苯基或全氟苯基)。