ELECTRODE ACTIVE MATERIAL, ELECTRODE LAYER, AND BATTERY

Abstract

A main object of the present disclosure is to provide an electrode active material capable of suppressing the volume change of the electrode layer. The present disclosure achieves the object by providing an electrode active material including a secondary particle that is an aggregation of a plurality of primary particle, wherein the primary particle is a Si-based active material containing a Si element, and a particle size D10 (μm) and a particle size D50 (μm) of the secondary particle satisfy the specified formula (1).

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