Fabrication of complex,3D,branched hollow carbonaceous structures and their applications for supercapacitors

• 作者: Lvlv Ji Yingying Zhu Xue Teng Tao Wang Sheng Wang Thomas J.Meyer Zuofeng Chen
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2022,（4）
• 所属期刊栏目: ARTICLES
• 页码范围: 398-407
• 页数: 10页
• 语种: 英文

摘要

A unique "integrated hard-templating strategy" is described for facile synthesis of a carbonaceous mate-rial with a novel three-dimensional (3D) branched hollow architecture.A set of steps,including template formation,surface coating and template removal,all occur in a spontaneous and orderly manner in the one-pot hydrothermal process.Investigations on structural evolution during the process reveal that pre-synthesized zeolitic imidazolate framework-8 (ZIF-8) nanoparticles are first dissociated and then self-assembled into 3D branched superstructures of ZnO as templates.Initial self-assembly is followed by coating of the glucose-derived carbonaceous materials and etching of interior ZnO by organic acids released in situ by hydrolysis of glucose.The 3D-branched hollow architecture is shown to greatly enhance supercapacitor performance.The research described here provides guidance into the develop-ment of strategies for complex hollow carbonaceous architectures for a variety of potential applications.