Compositing MXenes with hierarchical ZIF-67/cobalt hydroxide via controllable in situ etching for a high-performance supercapacitor. Issue 21 (15th September 2022)

• Record Type: Journal Article
• Authors: Liu, Chunli; Feng, Wenhao; Bai, Yang; Pang, Huan
• Is Part Of: Inorganic chemistry frontiers. Volume 9:Issue 21(2022)
• Page Start: 5463
• Page End: 5468
• Publication Date: 2022-09-15
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2qi01641a
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : The accumulation and self-aggregation of nanosheets have been effectively inhibited. The interlamellar cobalt hydroxide nanostructures ensure efficient electron transfer. MXene as a conductive substrate improves electron transfer significantly. Abstract : In this study, hierarchical MXene@ZIF-67/core–shell/yolk–shell cobalt hydroxide (MXene@CS-ZCH/MXene@YS-ZCH) and MXene@hollow cobalt hydroxide (MXene@Ho-CH) composites were prepared via the in situ gradient etching of a cubic ZIF-67 loaded MXene. The interlayer hierarchical cobalt hydroxide nanostructures ensure efficient electron transfer and the three-dimensional (3D) configurations avoid the accumulation/self-aggregation of two-dimensional (2D) layered materials. Meanwhile, the MXene can significantly improve electron transfer as a conductive substrate. The MXene@Ho-CH electrode shows excellent rate performance and cycling stability. This work provides a strategy for achieving MXene compositing with hierarchical core–shell/yolk–shell/hollow (CS/YS/Ho) structured MOF derivatives for electrochemical energy storage.