An all-in-one mesh-typed integrated energy unit for both photoelectric conversion and energy storage in uniform electrochemical system

An all-in-one mesh typed integrated energy unit is developed which converts solar energy to electric energy and stores it simultaneously. The entire integrated device operates in uniform electrolyte system which contains 0.8 M Na2S, 0.8 M S, and 2 M KCl. A double-sided mesh electrode coated with Cu2S film and carbon nanoparticles is shared by both energy conversion and storage sections. The device we fabricated can realize the co-operation of the energy conversion and storage sections effectively by taking advantages of the mono electrolyte system and the shared double-sided mesh-typed electrode. These properties are beneficial to assembly, miniaturization, and integration of a self-powered system for portable microelectronic devices. (C) 2015 Elsevier Ltd. All rights reserved.