Organic phosphomolybdate: a high capacity cathode for potassium ion batteries

Abstract

Homogeneous tetra-n-butylammonium phosphomolybdate (TBAPM) nanoparticles with an inter-connected structure were synthesized via a facile soft chemical route and firstly introduced into potassium ion batteries. The obtained novel TBAPM cathode delivers a high capacity of 232 mA h g⁻¹ at 20 mA g⁻¹ and shows slight decay during the subsequent cycle.