Patent ID: 9172087
Filing Date: 2015-10-27
Classification: H01M,Y02E

Abstract:
1. An electrode material comprising: an agglomerate formed by agglomerating a plurality of agglomerated particles formed by agglomerating a plurality of particles of a carbonaceous coated electrode active material having a carbonaceous coat formed on a surface, wherein the agglomerate is made up of hollow-structured particles containing voids and solid-structured particles, an average particle diameter of the agglomerate is in a range of 0.5 μm to 100 μm, a volume density of the agglomerate is in a range of 50% by volume to 80% by volume of a theoretical density of the electrode active material, a micropore distribution of micropores present in the agglomerate is monomodal, an average micropore diameter in the micropore distribution is 0.3 μm or less, and an N-methyl-2-pyrollidone oil absorption amount of the agglomerate is in a range of 40 g/100 g to 100 g/100 g, a diameter of the voids in the hollow-structured particles is in a range of 3.5 μm to 5.5 μm, and a ratio of a number of the hollow-structured particles of the agglomerates to a number of both of the hollow-structured particles and the solid-structured particles of the agglomerates is in the range of 15/50 to 24/50.