Bi-interface induced multi-active MCo2O4@MCo2S4@PPy (M=Ni, Zn) sandwich structure for energy storage and electrocatalysis

By Depeng Zhao, Henqi Liu, Xiang Wu. Nano Energy, 2019

279 citations recorded by the source corpus.

Abstract Rational interface tailoring of nanomaterials is a significant and efficient strategy to develop the desired electrode materials for energy storage and electrocatalysts for OER. In this work, the MCo2O4@MCo2S4@PPy sandwich structures are prepared through a simple solution approach. The as-synthesized products can be utilized directly for the electrode materials of hybrid capacitor, which delivers a specific capacitance of 835.2 C g−1 at 1 A g−1 and a retention rate of 90.07% after 10000 cycles, revealing that bi-interface of the product can motivate more active sites than single interface. Moreover, the sandwich structured product also exhibit low overpotential of 298 mV at 50 mA cm−2 and 395 mV at current density of 100 mA cm−2. In this work, the MCo2O4@MCo2S4@PPy sandwich structures are prepared through a facile solution route. The as-synthesized products can be used directly as the electrode materials for hybrid capacitor and electrocatalyst.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/a26cbd4363d3b5052950c09be796076346de567a