Related Experiment Video
Updated: May 30, 2025
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Fabrication of Dual-Functional MXene@NiCo2S4 Composites with Enhanced Nonlinear Optical and Electrochemical
Jinhe Wei1,2, Fei Hu1,2, Chenglong Lv1,2
1Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
Abstract:
The design and synthesis of multifunctional nanomaterials have attracted considerable attention for expanding the range of practical applications. Herein, a metal-organic framework (MOFs)-derived NiCo2S4 attached to MXene is rationally designed and constructed for an optical limiter and supercapacitor. The MOF-derived NiCo2S4 enhances the tendency of hydroxyl groups on the MXene surface to attract metal ions, resulting in the formation of sulfur vacancies. Moreover, MXene offers a high specific surface area to facilitate the rapid complexation of charge carriers. The resultant MXene@NiCo2S4 (MX@NCS) exhibits markedly enhanced nonlinear optical (NLO) and electrochemical properties through synergistic interactions between the components. The NLO properties can be further optimized by adjusting the amount of MX@NCS powder dispersed in methyl methacrylate (MX@NCS)2-6/PMMA) by using the Z-scan technique. Specifically, the (MX@NCS)4/PMMA exhibits the strongest reverse saturable absorption (RSA) and self-defocusing effects at 100 µJ with β = 3.87 × 102 cm·GW-1 and γ = -5.94 × 10-4 cm2·GW-1. Concurrently, the constructed supercapacitor shows a superior energy density of 51.21 Wh·kg-1 at a power density of 863.65 W·kg-1. Notably, the present study indicates a novel strategy to explore the application of materials in the development of efficient optical limiter and supercapacitor technologies.
