POSITIVE ELECTRODE ACTIVE MATERIAL FOR POTASSIUM-ION CELL, POSITIVE ELECTRODE FOR POTASSIUM-ION CELL, AND POTASSIUM-ION CELL

摘要

The positive electrode active material for a potassium-ion cell according to the present embodiment contains a compound represented by formula (1). In formula (1), m represents a number from 0.5 to 2, x represents a number from 0.5 to 1.5, y represents a number from 0.5 to 1.5, and z represents zero or a positive number. Also provided is a positive electrode for a potassium-ion cell containing the positive electrode active material for a potassium-ion cell according to the present embodiment, or a potassium-ion cell provided with the positive electrode for a potassium-ion cell. Formula (1): K_mFe_xMn_y(CN)₆•zH₂O