There is provided a lithium secondary battery with a negative electrode (503) which comprises a negative electrode active material layer (502) comprising alloy particles comprising silicon and tin and having an average particle diameter of 0.05 to 2 µm as...

There are provided an electrode material (103) for a lithium secondary battery which comprises alloy particles comprising silicon as a major component and having an average particle diameter of 0.02 mu m to 5 mu m, wherein the size of a crystallite of the ...

To obtain a nonaqueous secondary battery having a large capacity and a smell irreversible capacity while maintaining cycle characteristics, a composite particle comprising a core particle composed of a solid phase A and a coating layer composed of a solid ...

A rechargeable battery includes electrodes containing particles of an active material capable of being alloyed with Li. A metallic element that is not alloyed with Li is distributed by its diffusion in particles of the active material.

A negative electrode material and a battery which have an excellent cycle characteristic as well as a high capacity are provided. A positive electrode housed in an exterior can and a negative electrode housed in an exterior cup are laminated with a separat...