Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5149707 | Journal of Power Sources | 2017 | 9 Pages |
Abstract
High electrical conductivity and rational design of structures are two crucial routes to improving the electrochemical performance of electrode materials. However, highly conductive electrode materials with short ion-transport paths remain a challenge in energy storage. Here, we propose manganese cobalt sulfide (MnCo2S4) nanowire wrapping by a flocculent shell layer using a facile hydrothermal method with post-sulfurization treatment. The resultant MnCo2S4 electrode employed for supercapacitor delivered a remarkable specific capacitance of 2067 FÂ gâ1Â at the current density of 1Â AÂ gâ1, good rate capability, and excellent cycling stability. Moreover, an asymmetric supercapacitor device was successfully assembled using MnCo2S4 and reduced graphene oxide (rGO) as electrodes, achieving a high energy density of 31.3Â WÂ kgâ1Â at a power density of 800Â WÂ kgâ1. With such outstanding electrochemical performance, this asymmetric supercapacitor device holds great potential in developing high-energy-storage applications.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Shude Liu, Seong Chan Jun,