Electrode material, method for producing the same, electrode and battery

摘要

An electrode material containing an electrode active material, and a carbonaceous coating film which covers the electrode active material and contains sulfur; and an electrode material including a secondary particle including a plurality of primary particles as the electrode active material, wherein the primary particles are covered with a carbonaceous coating film so that the carbonaceous coating film is interposed between the primary particles and the carbonaceous coating film contains sulfur.

主权项

1. An electrode material comprising:
a secondary particle that includes a plurality of primary particles which are an electrode active material, wherein the primary particles are covered with a single layer carbonaceous coating film so that the carbonaceous coating film is interposed between the primary particles, wherein the thickness of the carbonaceous coating film is 0.1 to 20 nm, and wherein a plurality of the primary particles are bonded to each other by the carbonaceous coating film, the carbonaceous coating film contains sulfur, and the electrode active material includes at least one selected from the group consisting of lithium cobaltate, lithium nickelate, lithium manganate, lithium titanate and a compound represented by LixAyBzPO4, wherein A is one kind or two or more kinds selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr; B is one kind or two or more kinds selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare-earth elements; 0≦x<2; 0