A secondary battery provides a means for inhibiting the growth of dendrite in a solid electrolyte layer while suppressing the decrease in ion conductivity in the solid electrolyte layer.

In the secondary battery, which includes a power-generating element formed by laminating a positive electrode which contains a positive electrode active material, a solid electrolyte layer which contains a solid electrolyte, and a negative electrode which contains a negative electrode active material, a binder having a Young’s modulus of 200 [MPa] or lower is further contained in the solid electrolyte layer.

A secondary battery provides a means for inhibiting the growth of dendrite in a solid electrolyte layer while suppressing the decrease in ion conductivity in the solid electrolyte layer.

In the secondary battery, which includes a power-generating element formed by laminating a positive electrode which contains a positive electrode active material, a solid electrolyte layer which contains a solid electrolyte, and a negative electrode which contains a negative electrode active material, a binder having a Young’s modulus of 200 [MPa] or lower is further contained in the solid electrolyte layer.

The present invention provides a lithium secondary battery that has high energy density and capacity and has excellent cycle characteristics. The present invention relates to a lithium secondary battery including a positive electrode current collector, a negative electrode that is free of a negative electrode active material, a separator that is disposed between the positive electrode current collector and the negative electrode, a positive electrode that is disposed between the positive electrode current collector and the separator and contains a positive electrode active material, and electrolytic solution, wherein the lithium secondary battery includes a layer containing an anion-absorbing conductive polymer between the positive electrode current collector and the separator.

An electrode for an all-solid-state battery includes a current collector, a carbon material layer having an adhesive property, and an active material layer in this order in the thickness direction, and the carbon material layer contains a carbon material, a dispersion material, and a binder.

A negative active material for an all solid-state includes an aggregated material of amorphous carbon having pores therein in which primary particles are aggregated, and metal nanoparticles filling in the pores.

A negative active material for an all solid-state includes an aggregated material of amorphous carbon having pores therein in which primary particles are aggregated, and metal nanoparticles filling in the pores.

One aspect of the present invention is a solid electrolyte containing lithium, phosphorus, sulfur, halogen, and tin as constituent elements and having a crystal structure.

One aspect of the present invention is a solid electrolyte containing lithium, phosphorus, sulfur, halogen, and tin as constituent elements and having a crystal structure.

The solid electrolyte material includes Li, Ti, Zr, and F.

The solid electrolyte material includes Li, Ti, Zr, and F.