An electric energy storage device

The present invention provides an electric energy storage device, in particular a battery, at least comprising: an anode comprising an alkali metal selected from lithium and sodium or a combination thereof; a cathode comprising a sulphur-containing organosilane compound or a mixture of sulphur-containing organosilane compounds; and an electrolyte placed between the anode and the cathode; wherein the cathode comprises a current collector surface that has been at least partly modified by grafting the sulphur-containing organosilane compound or a mixture of sulphur-containing organosilane compounds thereon. 本发明提供一种电能存储装置，具体地说，一种电池，其至少包含：-阳极，其包含选自锂和钠或其组合的碱金属；-阴极，其包含含硫有机硅烷化合物或含硫有机硅烷化合物的混合物；和-电解液，其置于所述阳极与所述阴极之间；其中所述阴极包含集电体表面，所述集电体表面已通过在其上接枝所述含硫有机硅烷化合物或含硫有机硅烷化合物的混合物而经受至少部分改性。