Synthesis of NiCo2S4 Nanomaterial and its Composite for Electrochemical Energy Storage Devices

Abstract

Supercapacitor (SCs) and Li-ion based batteries (LiBs) are the two commercially mass successful systems for electrochemical energy storage. SCs have high power density while LiBs have high energy density. Their hybrid also used for better energy and power density combined. The material scientists have paid enormous attention to developing the different electrode materials for these systems resulting in the vast commercial success of energy storage devices. Carbon-based material as graphene, used as an electrode for SCs. The carbon materials are known for the highly stable electrode, but their disadvantage is their low theoretical capacity. Transition metal oxides (TMOs) electrodes store the charge through the faradaic process by conversion of the electron during charge-discharge. TMOs have a high theoretical capacity, but due to mass transfer and volume expansion, their cyclic stability is poor. Here, we propose to develop NiCo2S4 electrode materials with the objective to address the challenge related to cyclic stability and storage capacity. We are planning to synthesize some NiCo2S4 by different synthesis procedure and further, their composites with the graphene, to achieve high capacity as well as high cyclic stability for electrochemical energy storage.