Binder composition, negative electrode including binder composed of the composition, method for manufacturing the negative electrode, and all-solid-state battery including the negative electrode

A negative electrode comprising:

• a negative electrode current collector;
• and
• a negative electrode active material layer including:
• a negative electrode active material;
• and
• a binder having a three-dimensional network structure comprising a reaction product formed from a cross-linking reaction between a polymer including a reactive diene and an acrylate-based compound,
• wherein a ratio between a total number of moles of double bonds in the polymer and a total number of moles of double bonds in the acrylate-based compound is in a range of 6:4 inclusive to 9:1 inclusive.

A method for manufacturing a negative electrode, the method comprising:

• adding a polymer including a reactive diene, an acrylate-based compound, and a photo-crosslink initiator to an organic solvent to prepare a precursor solution;
• dispersing a negative electrode active material and a solid electrolyte in the precursor solution to prepare a slurry for the negative electrode;
• and
• coating the slurry for the negative electrode on a current collector, and photo-crosslinking the coated slurry,
• wherein a ratio between a total number of moles of double bonds in the polymer and a total number of moles of double bonds in the acrylate-based compound is in a range of 6:4 inclusive to 9:1 inclusive.