Electrolyte precursor solution, electrode assembly, battery, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorsHitoshi YAMAMOTO, Tomofumi YOKOYAMA
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Abstract
An electrolyte precursor solution includes a metallic compound containing elements constituting an electrolyte, a solvent capable of dissolving the metallic compound, and an anionic surfactant having a sulfate group (SO42−) bonded to a hydrophobic group R. By reacting such an electrolyte precursor solution with active material particles containing lithium, lithium sulfate derived from the anionic surfactant is interposed at the interface between the surface of the active material particle and the electrolyte so as to enhance the dissociation of lithium ions at the interface, and thus, an excellent ion conductivity can be realized.
Claims10
An electrolyte precursor solution, comprising:
- a metallic compound containing elements constituting an electrolyte;
- a solvent capable of dissolving the metallic compound;
- and
- an anionic surfactant having a sulfate group.
An electrode assembly, comprising:
- an active material portion including a plurality of active material particles and having voids inside;
- and
- an electrolyte including a crystalline first electrolyte portion and an amorphous second electrolyte portion, wherein each of the active material particle, the first electrolyte portion, and the second electrolyte portion contains lithium, the electrolyte is contained in the voids of the active material portion, and lithium sulfate is interposed between the surface of the active material particle and the electrolyte in the voids.
Dependencies are inferred from the claim text.